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Get a 240 area code local phone number
Unlock the power of local connectivity with advanced features designed for businesses aiming to flourish in the 240 area code region. Our virtual phone system marries professionalism, collaboration, and simplicity, crafting a comprehensive solution for your communication needs.
Secure 240 area code numbers with Teloz! 📞
Seamlessly manage business communications. 💼
Ideal for startups at only $3.99/user/month. 🚀
Boost Your Business Presence in 240 area code
- Local Credibility: Strengthen your footprint in the 240 area code, showing potential customers your commitment to the local community.
- Market Penetration: Seamlessly blend into the regional market, making your services more attractive to residents.
- Cost Efficiency: Forego the need for a brick-and-mortar location while maintaining a significant local presence.
ZIP Code Served By 240 area code
Professionalism and Collaboration Features
Custom Greetings & Multi-Level Menus
Greet callers with tailored messages and navigate them through your services smoothly, showcasing your business’s professionalism.
Enhance team synergy with streamlined
Enable your team with shared inboxes and collaboration tools, ensuring you remain connected and attentive to customer inquiries.
How It Works: Streamline Your Setup
- Select Your 240 Area Code Number: Choose from a variety of numbers that resonate with your business identity.
- Download the App or Access via Web Browser: Utilize our platform on your chosen devices, offering both flexibility and ease of use.
- Initiate Connections: Dive into calling and texting within minutes, enhancing your interactions with local customers.
Empower Your Communication
Smooth Number Porting, Affordable Global Calls, and Seamless Device Compatibility
Number Porting
Easily transition your current number to our system, ensuring a seamless changeover.
International Calls
Enjoy accessible rates for worldwide calls, maintaining global connections affordably.
Device Compatibility
Our system is optimized for seamless operation across all your devices, keeping you connected wherever you go.
Enhance Your Connectivity
Instant Activation
Get your 240 area code number operational straight after registration.
Flexible Commitments
Relish the liberty of our month-to-month subscriptions, tailored for the evolving needs of your business.
Round-the-Clock Support
Benefit from our dedicated support team, available 24/7 to assist with any queries or issues.
Adaptable Solutions
Modify your services as your business landscape changes, with scalable features and plans that grow alongside you.
Security and Trust
Encryption & Compliance
Confidence in your communication security, backed by end-to-end encryption and strict adherence to premier security protocols.
Continuous Updates
Stay protected with frequent updates, ensuring your communication system remains robust against evolving threats.
How to Obtain a 240 area code Phone Number
Enter your email address or sign in with your Google account.
Verify your account via credit card (you won’t be charged until your trial ends, cancel anytime.)
Use the Teloz browser app or download the desktop apps or mobile apps.
Pricing: Choose Your Perfect Plan
Unlock the full potential of your business communication in the 315 area code with our flexible pricing plans. Designed to cater to businesses of all sizes, our plans ensure you only pay for what you need, with the option to adjust as your business grows.
Grow Your Business With Teloz
Monthly
Yearly
20% Discount
14 Days Free Trial
Launch Your Business
$0
Per month flat free
Get Our 14-Day Free Trial with Full Access – 100 Calls, WebPhone, IVR, & Click-to-Call. No Cost, No Commitment. Transform Today
All the features, no commitment
- 1 Users Minimum
- 100 Calling
- WebPhone
- Multi-level IVR
- Click to Call
Starter Plan
Essential for personal projects
$8.99
$3.99
Per month / user
Get started with essential features like unlimited calling and texting within the 240 area code, voicemail transcription, and basic CRM integration.
All advanced telephony features
- 1 Users Minimum
- Unlimited Calling
- Unlimited Message
- 1 Business phone number
- Click to Call
Professional Plan
Enhanced for Growing Teams
$7.99
$2.99
Per month / user
Includes everything in the Starter Plan plus advanced features such as custom greetings, multi-level menus, shared inboxes, and enhanced CRM integration.
All Small Team features, plus
- 5 Users Minimum
- Live Call Monitoring
- Real - Time Analytics
- Call Recording
Enterprise Plan
Custom Solutions for Large Enterprises
Get a quote
Per month flat free
Tailored to fit your business needs with premium features, including dedicated support, custom analytics, and enterprise-grade security.
All Business features, plus
- Unlimited Users
- Unlimited Minutes
- Unlimited Message
- Get Volume Discount
Each plan comes with a free trial period, allowing you to experience the benefits first-hand before making a decision. Plus, with no long-term contracts, you have the flexibility to switch plans or cancel at any time. Start enhancing your local presence in the 240 area code today!
Why Partner with Us?
We pride ourselves on offering a secure, adaptable, and feature-rich virtual phone system, distinctively designed for businesses targeting the 240 area code region. With no requirement for long-term contracts, a dedication to superior customer service, and a platform that adapts to your business’s growth, we’re committed to propelling your success. Begin with our free trial and discover the transformative impact on your business communication today.
State & Area Codes
State
Area Codes
📞 Unlock Your Business's Potential in the 240 Area Code Today!
- Start connecting with your local community like never before.
- Choose our virtual phone system for unparalleled professionalism and collaboration.
- Sign up now for our free trial and experience the immediate difference in your business communication.
No long-term commitments, just seamless connectivity.
Provide a compilation of all the area codes in district-of-columbia
212
315
332
347
516
518
585
607
631
680
716
838
845
914
917
929
934
Provide A Compilation Of All The Area Codes
State & area Codes
State
Area Code
Active Phone Number Prefixes( NXX)
for district-of-columbia area code
| NPA | NXX | CITY | USAGE | COMPANY NAME | NXX INTRODUCED DATE |
|---|---|---|---|---|---|
| 240 | 200 | Hyattsville | Landline | Bandwidth.com Clec, Llc - Md | 10/4/2010 |
| 240 | 200 | Mount Rainier | Landline | Bandwidth.com Clec, Llc - Md | 10/4/2010 |
| 240 | 200 | Brentwood | Landline | Bandwidth.com Clec, Llc - Md | 10/4/2010 |
| 240 | 201 | Ridge | Landline | Peerless Network Of Maryland, Llc | 7/22/1999 |
| 240 | 203 | Hagerstown | Wireless | Sprint Spectrum L.p. - Md | 10/4/2011 |
| 240 | 204 | Bethesda | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 9/7/2011 |
| 240 | 204 | Chevy Chase | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 9/7/2011 |
| 240 | 205 | Bethesda | Wireless | New Cingular Wireless Pcs, Llc - Dc | 7/23/2003 |
| 240 | 205 | Glen Echo | Wireless | New Cingular Wireless Pcs, Llc - Dc | 7/23/2003 |
| 240 | 205 | Cabin John | Wireless | New Cingular Wireless Pcs, Llc - Dc | 7/23/2003 |
| 240 | 206 | Glenn Dale | Landline | Xo Maryland, Llc | 10/31/2001 |
| 240 | 206 | Lanham | Landline | Xo Maryland, Llc | 10/31/2001 |
| 240 | 206 | Bowie | Landline | Xo Maryland, Llc | 10/31/2001 |
| 240 | 207 | Clarksburg | Landline | Cavalier East Llc - Md | 8/20/2000 |
| 240 | 207 | Damascus | Landline | Cavalier East Llc - Md | 8/20/2000 |
| 240 | 207 | Monrovia | Landline | Cavalier East Llc - Md | 8/20/2000 |
| 240 | 208 | La Plata | Landline | Peerless Network Of Maryland, Llc | 7/22/1999 |
| 240 | 208 | Bel Alton | Landline | Peerless Network Of Maryland, Llc | 7/22/1999 |
| 240 | 208 | Port Tobacco | Landline | Peerless Network Of Maryland, Llc | 7/22/1999 |
| 240 | 209 | Indian Head | Landline | Peerless Network Of Maryland, Llc | 7/22/1999 |
| 240 | 210 | Waldorf | Wireless | New Cingular Wireless Pcs, Llc - Dc | 8/20/2000 |
| 240 | 212 | Oakland | Landline | Core Communications, Inc. - Md | 6/13/2000 |
| 240 | 213 | Waldorf | Landline | Peerless Network Of Maryland, Llc | 7/22/1999 |
| 240 | 214 | Charlotte Hall | Landline | Peerless Network Of Maryland, Llc | 7/22/1999 |
| 240 | 214 | Hughesville | Landline | Peerless Network Of Maryland, Llc | 7/22/1999 |
| 240 | 214 | Mechanicsville | Landline | Peerless Network Of Maryland, Llc | 7/22/1999 |
| 240 | 215 | Frederick | Landline | Telcove Operations, Inc. - Md | 1/14/2000 |
| 240 | 216 | Waldorf | Wireless | Sprint Spectrum L.p. | 3/15/2001 |
| 240 | 217 | Hagerstown | Wireless | Omnipoint Communications Cap Operations, Llc | 4/16/2001 |
| 240 | 218 | Nanjemoy | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 219 | Ridge | Landline | Peerless Network Of Maryland, Llc | 9/22/2014 |
| 240 | 220 | Poolesville | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 221 | Rockville | Landline | Verizon Maryland, Inc. | 5/10/1999 |
| 240 | 222 | Waldorf | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 8/20/2000 |
| 240 | 223 | Hyattsville | Landline | Allegiance Telecom, Inc. - Md | 2/27/1999 |
| 240 | 223 | Mount Rainier | Landline | Allegiance Telecom, Inc. - Md | 2/27/1999 |
| 240 | 223 | Brentwood | Landline | Allegiance Telecom, Inc. - Md | 2/27/1999 |
| 240 | 224 | Gaithersburg | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 9/10/2012 |
| 240 | 224 | Montgomery Village | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 9/10/2012 |
| 240 | 225 | Frederick | Landline | Core Communications, Inc. - Md | 6/13/2000 |
| 240 | 228 | Laurel | Landline | Verizon Maryland, Inc. | 11/20/1998 |
| 240 | 229 | Waldorf | Landline | Broadwing Communications. Llc - Md | 7/22/1999 |
| 240 | 230 | Hughesville | Landline | Global Crossing Local Services, Inc.-md | 5/10/1999 |
| 240 | 231 | Hagerstown | Landline | Core Communications, Inc. - Md | 6/13/2000 |
| 240 | 232 | Hyattsville | Landline | Broadwing Communications. Llc - Md | 7/22/1999 |
| 240 | 232 | Mount Rainier | Landline | Broadwing Communications. Llc - Md | 7/22/1999 |
| 240 | 232 | Brentwood | Landline | Broadwing Communications. Llc - Md | 7/22/1999 |
| 240 | 233 | Issue | Landline | Teleport Communications America, Llc - Dc | 2/27/1999 |
| 240 | 233 | Newburg | Landline | Teleport Communications America, Llc - Dc | 2/27/1999 |
| 240 | 233 | Faulkner | Landline | Teleport Communications America, Llc - Dc | 2/27/1999 |
| 240 | 234 | Mount Rainier | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 10/4/2011 |
| 240 | 234 | Oxon Hill | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 10/4/2011 |
| 240 | 234 | Brentwood | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 10/4/2011 |
| 240 | 235 | Bethesda | Landline | Paetec Communications, Inc. - Md | 10/13/1999 |
| 240 | 235 | Chevy Chase | Landline | Paetec Communications, Inc. - Md | 10/13/1999 |
| 240 | 236 | Frederick | Landline | Verizon Maryland, Inc. | 6/13/2000 |
| 240 | 237 | Callaway | Landline | Teleport Communications America, Llc - Dc | 2/27/1999 |
| 240 | 237 | Lexington Park | Landline | Teleport Communications America, Llc - Dc | 2/27/1999 |
| 240 | 237 | Great Mills | Landline | Teleport Communications America, Llc - Dc | 2/27/1999 |
| 240 | 238 | Rockville | Landline | Paetec Communications, Inc. - Md | 10/13/1999 |
| 240 | 239 | Leonardtown | Landline | Core Communications, Inc. - Md | 10/31/2000 |
| 240 | 241 | Bethesda | Landline | Starpower Communications, Llc - Md | 2/27/1999 |
| 240 | 241 | Chevy Chase | Landline | Starpower Communications, Llc - Md | 2/27/1999 |
| 240 | 242 | Bethesda | Landline | Starpower Communications, Llc - Md | 2/27/1999 |
| 240 | 242 | Chevy Chase | Landline | Starpower Communications, Llc - Md | 2/27/1999 |
| 240 | 242 | Mount Rainier | Landline | Starpower Communications, Llc - Md | 2/27/1999 |
| 240 | 243 | Gaithersburg | Landline | Allegiance Telecom, Inc. - Md | 1/14/2000 |
| 240 | 243 | Montgomery Village | Landline | Allegiance Telecom, Inc. - Md | 1/14/2000 |
| 240 | 244 | Bethesda | Landline | Starpower Communications, Llc - Md | 2/27/1999 |
| 240 | 244 | Chevy Chase | Landline | Starpower Communications, Llc - Md | 2/27/1999 |
| 240 | 244 | Mount Rainier | Landline | Starpower Communications, Llc - Md | 2/27/1999 |
| 240 | 245 | Glenn Dale | Landline | Starpower Communications, Llc - Md | 2/27/1999 |
| 240 | 245 | Lanham | Landline | Starpower Communications, Llc - Md | 2/27/1999 |
| 240 | 245 | Bowie | Landline | Starpower Communications, Llc - Md | 2/27/1999 |
| 240 | 246 | Gaithersburg | Landline | Starpower Communications, Llc - Md | 11/20/1998 |
| 240 | 246 | Montgomery Village | Landline | Starpower Communications, Llc - Md | 11/20/1998 |
| 240 | 247 | Hyattsville | Landline | Allegiance Telecom, Inc. - Md | 2/27/1999 |
| 240 | 247 | Mount Rainier | Landline | Allegiance Telecom, Inc. - Md | 2/27/1999 |
| 240 | 247 | Brentwood | Landline | Allegiance Telecom, Inc. - Md | 2/27/1999 |
| 240 | 248 | Ridge | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 249 | Charlotte Hall | Landline | Teleport Communications America, Llc - Dc | 2/27/1999 |
| 240 | 249 | Hughesville | Landline | Teleport Communications America, Llc - Dc | 2/27/1999 |
| 240 | 249 | Mechanicsville | Landline | Teleport Communications America, Llc - Dc | 2/27/1999 |
| 240 | 250 | Brandywine | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 251 | Cascade | Landline | Core Communications, Inc. - Md | 6/13/2000 |
| 240 | 252 | Gaithersburg | Landline | Level 3 Communications, Llc - Md | 5/10/1999 |
| 240 | 252 | Montgomery Village | Landline | Level 3 Communications, Llc - Md | 5/10/1999 |
| 240 | 253 | Upper Marlboro | Landline | Global Crossing Local Services, Inc.-md | 2/27/1999 |
| 240 | 253 | Cheltenham | Landline | Global Crossing Local Services, Inc.-md | 2/27/1999 |
| 240 | 253 | Andrews Air Force Base | Landline | Global Crossing Local Services, Inc.-md | 2/27/1999 |
| 240 | 254 | Hughesville | Landline | Teleport Communications America, Llc - Dc | 2/27/1999 |
| 240 | 255 | Poolesville | Landline | Peerless Network Of Maryland, Llc | 7/22/1999 |
| 240 | 256 | Leonardtown | Landline | Teleport Communications America, Llc - Dc | 2/27/1999 |
| 240 | 257 | Nanjemoy | Landline | Teleport Communications America, Llc - Dc | 2/27/1999 |
| 240 | 258 | Ridge | Landline | Teleport Communications America, Llc - Dc | 2/27/1999 |
| 240 | 260 | Hyattsville | Landline | Allegiance Telecom, Inc. - Md | 6/13/2000 |
| 240 | 260 | Mount Rainier | Landline | Allegiance Telecom, Inc. - Md | 6/13/2000 |
| 240 | 260 | Brentwood | Landline | Allegiance Telecom, Inc. - Md | 6/13/2000 |
| 240 | 261 | Gaithersburg | Landline | Neutral Tandem-maryland, Llc - Md | 12/23/2015 |
| 240 | 261 | Montgomery Village | Landline | Neutral Tandem-maryland, Llc - Md | 12/23/2015 |
| 240 | 262 | Callaway | Wireless | Sprint Spectrum L.p. | 10/17/2011 |
| 240 | 262 | Lexington Park | Wireless | Sprint Spectrum L.p. | 10/17/2011 |
| 240 | 262 | Great Mills | Wireless | Sprint Spectrum L.p. | 10/17/2011 |
| 240 | 263 | Bethesda | Wireless | Sprint Spectrum L.p. | 11/10/2011 |
| 240 | 263 | Chevy Chase | Wireless | Sprint Spectrum L.p. | 11/10/2011 |
| 240 | 264 | Beltsville | Landline | Verizon Maryland, Inc. | 2/27/1999 |
| 240 | 264 | Laurel | Landline | Verizon Maryland, Inc. | 2/27/1999 |
| 240 | 265 | Bethesda | Wireless | Sprint Spectrum L.p. | 11/10/2011 |
| 240 | 265 | Chevy Chase | Wireless | Sprint Spectrum L.p. | 11/10/2011 |
| 240 | 266 | Hyattsville | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 266 | Mount Rainier | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 266 | Brentwood | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 267 | Hagerstown | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 5/18/2017 |
| 240 | 268 | Rockville | Landline | Allegiance Telecom, Inc. - Md | 2/27/1999 |
| 240 | 268 | Derwood | Landline | Allegiance Telecom, Inc. - Md | 2/27/1999 |
| 240 | 269 | Hyattsville | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 269 | Mount Rainier | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 269 | Brentwood | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 270 | Waldorf | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 11/7/2011 |
| 240 | 271 | Bethesda | Wireless | New Cingular Wireless Pcs, Llc - Dc | 2/27/1999 |
| 240 | 271 | Chevy Chase | Wireless | New Cingular Wireless Pcs, Llc - Dc | 2/27/1999 |
| 240 | 272 | Bethesda | Wireless | Sprint Spectrum L.p. | 11/10/2011 |
| 240 | 272 | Chevy Chase | Wireless | Sprint Spectrum L.p. | 11/10/2011 |
| 240 | 273 | Hyattsville | Landline | Broadwing Communications. Llc - Md | 7/22/1999 |
| 240 | 273 | Mount Rainier | Landline | Broadwing Communications. Llc - Md | 7/22/1999 |
| 240 | 273 | Brentwood | Landline | Broadwing Communications. Llc - Md | 7/22/1999 |
| 240 | 274 | Bethesda | Wireless | New Cingular Wireless Pcs, Llc - Dc | 2/27/1999 |
| 240 | 274 | Chevy Chase | Wireless | New Cingular Wireless Pcs, Llc - Dc | 2/27/1999 |
| 240 | 275 | Grantsville | Landline | Core Communications, Inc. - Md | 10/31/2000 |
| 240 | 276 | Rockville | Landline | Verizon Maryland, Inc. | 5/4/2004 |
| 240 | 276 | Derwood | Landline | Verizon Maryland, Inc. | 5/4/2004 |
| 240 | 277 | Bethesda | Wireless | Sprint Spectrum L.p. | 10/18/2002 |
| 240 | 277 | Chevy Chase | Wireless | Sprint Spectrum L.p. | 10/18/2002 |
| 240 | 278 | Laurel | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 7/8/2011 |
| 240 | 279 | Waldorf | Landline | Core Communications, Inc. - Md | 10/31/2000 |
| 240 | 280 | Laurel | Landline | Comcast Phone Of Northern Maryland, Inc. - Md | 3/3/2001 |
| 240 | 281 | Bethesda | Wireless | New Cingular Wireless Pcs, Llc - Dc | 10/13/1999 |
| 240 | 281 | Chevy Chase | Wireless | New Cingular Wireless Pcs, Llc - Dc | 10/13/1999 |
| 240 | 282 | Charlotte Hall | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 282 | Hughesville | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 282 | Mechanicsville | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 283 | Silver Spring | Landline | Paetec Communications, Inc. - Md | 10/13/1999 |
| 240 | 283 | Bethesda | Landline | Paetec Communications, Inc. - Md | 10/13/1999 |
| 240 | 283 | Kensington | Landline | Paetec Communications, Inc. - Md | 10/13/1999 |
| 240 | 284 | Frostburg | Landline | Level 3 Communications, Llc - Md | 11/1/2004 |
| 240 | 285 | Frederick | Landline | Cellco Partnership Dba Verizon Wireless - Md | 6/13/2000 |
| 240 | 286 | Bethesda | Wireless | Sprint Spectrum L.p. | 9/17/2002 |
| 240 | 286 | Chevy Chase | Wireless | Sprint Spectrum L.p. | 9/17/2002 |
| 240 | 287 | Hancock | Landline | Core Communications, Inc. - Md | 6/13/2000 |
| 240 | 288 | Thurmont | Landline | Comcast Phone Of Northern Maryland, Inc. - Md | 11/1/2004 |
| 240 | 289 | Temple Hills | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 8/20/2000 |
| 240 | 289 | Fort Washington | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 8/20/2000 |
| 240 | 289 | Oxon Hill | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 8/20/2000 |
| 240 | 290 | Hyattsville | Landline | Allegiance Telecom, Inc. - Md | 2/27/1999 |
| 240 | 290 | Mount Rainier | Landline | Allegiance Telecom, Inc. - Md | 2/27/1999 |
| 240 | 290 | Brentwood | Landline | Allegiance Telecom, Inc. - Md | 2/27/1999 |
| 240 | 291 | Hagerstown | Wireless | New Cingular Wireless Pcs, Llc - Dc | 10/15/2002 |
| 240 | 292 | Silver Spring | Landline | Verizon Maryland, Inc. | 10/13/1999 |
| 240 | 292 | Kensington | Landline | Verizon Maryland, Inc. | 10/13/1999 |
| 240 | 293 | Hyattsville | Landline | Starpower Communications, Llc - Md | 2/27/1999 |
| 240 | 293 | Mount Rainier | Landline | Starpower Communications, Llc - Md | 2/27/1999 |
| 240 | 293 | Brentwood | Landline | Starpower Communications, Llc - Md | 2/27/1999 |
| 240 | 294 | Laurel | Landline | Xo Maryland, Llc | 6/30/2001 |
| 240 | 295 | Laurel | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 8/20/2000 |
| 240 | 296 | Hyattsville | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 8/20/2000 |
| 240 | 296 | Mount Rainier | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 8/20/2000 |
| 240 | 296 | Brentwood | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 8/20/2000 |
| 240 | 297 | Riverdale | Landline | Level 3 Communications, Llc - Md | 10/13/1999 |
| 240 | 297 | College Park | Landline | Level 3 Communications, Llc - Md | 10/13/1999 |
| 240 | 297 | Greenbelt | Landline | Level 3 Communications, Llc - Md | 10/13/1999 |
| 240 | 298 | Leonardtown | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 10/13/1999 |
| 240 | 299 | Waldorf | Wireless | Sprint Spectrum L.p. | 10/13/1999 |
| 240 | 300 | Waldorf | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 12/7/2010 |
| 240 | 302 | Laurel | Wireless | New Cingular Wireless Pcs, Llc - Dc | 9/28/2016 |
| 240 | 303 | Clinton | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 8/20/2000 |
| 240 | 303 | Cheltenham | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 8/20/2000 |
| 240 | 303 | Andrews Air Force Base | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 8/20/2000 |
| 240 | 304 | Hyattsville | Wireless | Sprint Spectrum L.p. | 7/3/2002 |
| 240 | 304 | Mount Rainier | Wireless | Sprint Spectrum L.p. | 7/3/2002 |
| 240 | 304 | Brentwood | Wireless | Sprint Spectrum L.p. | 7/3/2002 |
| 240 | 305 | Beltsville | Wireless | Sprint Spectrum L.p. | 2/27/1999 |
| 240 | 305 | Laurel | Wireless | Sprint Spectrum L.p. | 2/27/1999 |
| 240 | 306 | Gaithersburg | Landline | Allegiance Telecom, Inc. - Md | 6/13/2000 |
| 240 | 306 | Montgomery Village | Landline | Allegiance Telecom, Inc. - Md | 6/13/2000 |
| 240 | 307 | Emmitsburg | Landline | At&t Local | 3/27/2003 |
| 240 | 308 | Clarksburg | Wireless | New Cingular Wireless Pcs, Llc - Dc | 8/20/2000 |
| 240 | 308 | Damascus | Wireless | New Cingular Wireless Pcs, Llc - Dc | 8/20/2000 |
| 240 | 308 | Monrovia | Wireless | New Cingular Wireless Pcs, Llc - Dc | 8/20/2000 |
| 240 | 309 | Silver Spring | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 9/10/2012 |
| 240 | 309 | Leonardtown | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 9/10/2012 |
| 240 | 310 | Hagerstown | Wireless | Uscoc Of Cumberland, Inc. Dba United States Cel Md | 2/27/1999 |
| 240 | 312 | Capitol Heights | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 8/20/2000 |
| 240 | 312 | Hyattsville | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 8/20/2000 |
| 240 | 312 | District Heights | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 8/20/2000 |
| 240 | 313 | Hagerstown | Landline | Verizon Maryland, Inc. | 10/31/2000 |
| 240 | 314 | Rockville | Landline | Verizon Maryland, Inc. | 6/13/2000 |
| 240 | 315 | Frederick | Landline | Verizon Maryland, Inc. | 8/20/2000 |
| 240 | 316 | Bethesda | Wireless | Sprint Spectrum L.p. | 12/31/1969 |
| 240 | 316 | Chevy Chase | Wireless | Sprint Spectrum L.p. | 12/31/1969 |
| 240 | 317 | Callaway | Landline | Starpower Communications, Llc - Md | 11/20/1998 |
| 240 | 317 | Lexington Park | Landline | Starpower Communications, Llc - Md | 11/20/1998 |
| 240 | 317 | Great Mills | Landline | Starpower Communications, Llc - Md | 11/20/1998 |
| 240 | 318 | Clinton | Landline | Verizon Maryland, Inc. | 1/14/2000 |
| 240 | 318 | Cheltenham | Landline | Verizon Maryland, Inc. | 1/14/2000 |
| 240 | 318 | Andrews Air Force Base | Landline | Verizon Maryland, Inc. | 1/14/2000 |
| 240 | 319 | Columbia | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 6/6/2008 |
| 240 | 320 | Waldorf | Landline | Cavalier East Llc - Md | 10/31/2000 |
| 240 | 321 | Oakland | Wireless | Uscoc Of Cumberland, Inc. Dba United States Cel Md | 2/27/1999 |
| 240 | 322 | Westernport | Landline | Core Communications, Inc. - Md | 10/31/2000 |
| 240 | 323 | Emmitsburg | Landline | Core Communications, Inc. - Md | 10/31/2000 |
| 240 | 324 | Dayton | Landline | Ymax Communications Corp. - Md | 10/8/2008 |
| 240 | 324 | Highland | Landline | Ymax Communications Corp. - Md | 10/8/2008 |
| 240 | 324 | Clarksville | Landline | Ymax Communications Corp. - Md | 10/8/2008 |
| 240 | 325 | Clarksburg | Landline | Core Communications, Inc. - Md | 10/31/2000 |
| 240 | 325 | Damascus | Landline | Core Communications, Inc. - Md | 10/31/2000 |
| 240 | 325 | Monrovia | Landline | Core Communications, Inc. - Md | 10/31/2000 |
| 240 | 326 | Upper Marlboro | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 8/20/2000 |
| 240 | 326 | Lothian | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 8/20/2000 |
| 240 | 327 | Gaithersburg | Landline | Core Communications, Inc. - Md | 10/31/2000 |
| 240 | 327 | Montgomery Village | Landline | Core Communications, Inc. - Md | 10/31/2000 |
| 240 | 328 | Rockville | Landline | Verizon Maryland, Inc. | 8/20/2000 |
| 240 | 329 | Hagerstown | Landline | Level 3 Communications, Llc - Md | 10/31/2000 |
| 240 | 330 | Bethesda | Wireless | Sprint Spectrum L.p. | 12/14/2007 |
| 240 | 330 | Glen Echo | Wireless | Sprint Spectrum L.p. | 12/14/2007 |
| 240 | 330 | Cabin John | Wireless | Sprint Spectrum L.p. | 12/14/2007 |
| 240 | 331 | Hyattsville | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 331 | Mount Rainier | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 331 | Brentwood | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 332 | Issue | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 332 | Newburg | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 332 | Faulkner | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 333 | Hyattsville | Landline | Cavalier East Llc - Md | 5/9/2001 |
| 240 | 333 | Mount Rainier | Landline | Cavalier East Llc - Md | 5/9/2001 |
| 240 | 333 | Brentwood | Landline | Cavalier East Llc - Md | 5/9/2001 |
| 240 | 334 | Glenn Dale | Landline | Global Crossing Local Services, Inc.-md | 2/27/1999 |
| 240 | 334 | Lanham | Landline | Global Crossing Local Services, Inc.-md | 2/27/1999 |
| 240 | 334 | Bowie | Landline | Global Crossing Local Services, Inc.-md | 2/27/1999 |
| 240 | 335 | Glenn Dale | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 8/20/2000 |
| 240 | 335 | Lanham | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 8/20/2000 |
| 240 | 335 | Bowie | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 8/20/2000 |
| 240 | 336 | Bethesda | Landline | Core Communications, Inc. - Md | 10/31/2000 |
| 240 | 336 | Chevy Chase | Landline | Core Communications, Inc. - Md | 10/31/2000 |
| 240 | 337 | Hyattsville | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 337 | Mount Rainier | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 337 | Brentwood | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 338 | Silver Spring | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 1/14/2000 |
| 240 | 339 | Upper Marlboro | Landline | Cavalier East Llc - Md | 10/31/2000 |
| 240 | 339 | Lothian | Landline | Cavalier East Llc - Md | 10/31/2000 |
| 240 | 340 | Bethesda | Wireless | Sprint Spectrum L.p. | 8/18/2011 |
| 240 | 340 | Chevy Chase | Wireless | Sprint Spectrum L.p. | 8/18/2011 |
| 240 | 341 | Frederick | Landline | Mci Worldcom Communications, Inc. - Md | 2/25/2009 |
| 240 | 341 | Adamstown | Landline | Mci Worldcom Communications, Inc. - Md | 2/25/2009 |
| 240 | 342 | Sandy Spring | Landline | Starpower Communications, Llc - Md | 11/20/1998 |
| 240 | 342 | Ashton | Landline | Starpower Communications, Llc - Md | 11/20/1998 |
| 240 | 342 | Brinklow | Landline | Starpower Communications, Llc - Md | 11/20/1998 |
| 240 | 343 | Hancock | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 5/10/2011 |
| 240 | 344 | Frederick | Wireless | New Cingular Wireless Pcs, Llc - Dc | 10/15/2002 |
| 240 | 345 | Sandy Spring | Landline | Level 3 Communications, Llc - Md | 3/9/2006 |
| 240 | 345 | Ashton | Landline | Level 3 Communications, Llc - Md | 3/9/2006 |
| 240 | 345 | Brinklow | Landline | Level 3 Communications, Llc - Md | 3/9/2006 |
| 240 | 346 | Waldorf | Wireless | Sprint Spectrum L.p. | 8/20/2000 |
| 240 | 347 | Hagerstown | Landline | Bandwidth.com Clec, Llc - Md | 8/4/2008 |
| 240 | 348 | Clinton | Landline | Level 3 Communications, Llc - Md | 8/20/2000 |
| 240 | 348 | Cheltenham | Landline | Level 3 Communications, Llc - Md | 8/20/2000 |
| 240 | 348 | Andrews Air Force Base | Landline | Level 3 Communications, Llc - Md | 8/20/2000 |
| 240 | 349 | La Plata | Landline | Global Crossing Local Services, Inc.-md | 5/10/1999 |
| 240 | 349 | Bel Alton | Landline | Global Crossing Local Services, Inc.-md | 5/10/1999 |
| 240 | 349 | Port Tobacco | Landline | Global Crossing Local Services, Inc.-md | 5/10/1999 |
| 240 | 350 | Beltsville | Wireless | Sprint Spectrum L.p. | 5/10/1999 |
| 240 | 350 | Laurel | Wireless | Sprint Spectrum L.p. | 5/10/1999 |
| 240 | 351 | Beltsville | Wireless | Sprint Spectrum L.p. | 5/10/1999 |
| 240 | 351 | Laurel | Wireless | Sprint Spectrum L.p. | 5/10/1999 |
| 240 | 352 | La Plata | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 352 | Bel Alton | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 352 | Port Tobacco | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 353 | Beltsville | Wireless | Sprint Spectrum L.p. | 5/10/1999 |
| 240 | 353 | Laurel | Wireless | Sprint Spectrum L.p. | 5/10/1999 |
| 240 | 354 | Beltsville | Wireless | Sprint Spectrum L.p. | 5/10/1999 |
| 240 | 354 | Laurel | Wireless | Sprint Spectrum L.p. | 5/10/1999 |
| 240 | 355 | Beltsville | Wireless | Sprint Spectrum L.p. | 5/10/1999 |
| 240 | 355 | Laurel | Wireless | Sprint Spectrum L.p. | 5/10/1999 |
| 240 | 356 | Frederick | Landline | Level 3 Communications, Llc - Md | 3/3/2001 |
| 240 | 357 | Frederick | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 6/12/2006 |
| 240 | 358 | Clarksburg | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 358 | Damascus | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 358 | Monrovia | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 359 | Indian Head | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 360 | Laurel | Wireless | Omnipoint Communications Cap Operations, Llc | 9/17/2013 |
| 240 | 361 | Gaithersburg | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 8/20/2000 |
| 240 | 361 | Montgomery Village | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 8/20/2000 |
| 240 | 362 | Cumberland | Landline | Verizon Maryland, Inc. | 2/27/1999 |
| 240 | 363 | Silver Spring | Landline | Global Naps South, Inc. - Md | 2/27/1999 |
| 240 | 363 | Bethesda | Landline | Global Naps South, Inc. - Md | 2/27/1999 |
| 240 | 363 | Kensington | Landline | Global Naps South, Inc. - Md | 2/27/1999 |
| 240 | 364 | Gaithersburg | Landline | Cavalier East Llc - Md | 5/9/2001 |
| 240 | 364 | Montgomery Village | Landline | Cavalier East Llc - Md | 5/9/2001 |
| 240 | 365 | Clarksburg | Landline | Baltimore-washington Telephone (bwt) | 8/20/2000 |
| 240 | 365 | Damascus | Landline | Baltimore-washington Telephone (bwt) | 8/20/2000 |
| 240 | 365 | Monrovia | Landline | Baltimore-washington Telephone (bwt) | 8/20/2000 |
| 240 | 366 | Williamsport | Landline | At&t Local | 3/3/2001 |
| 240 | 367 | Frederick | Wireless | Sprint Spectrum L.p. | 10/18/2002 |
| 240 | 368 | Waldorf | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 369 | Mount Airy | Landline | Core Communications, Inc. - Md | 10/31/2000 |
| 240 | 370 | Bethesda | Wireless | Sprint Spectrum L.p. | 12/14/2007 |
| 240 | 370 | Chevy Chase | Wireless | Sprint Spectrum L.p. | 12/14/2007 |
| 240 | 371 | Hyattsville | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 371 | Mount Rainier | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 371 | Brentwood | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 372 | Gaithersburg | Wireless | Sprint Spectrum L.p. | 10/13/1999 |
| 240 | 372 | Montgomery Village | Wireless | Sprint Spectrum L.p. | 10/13/1999 |
| 240 | 373 | Odenton | Landline | Verizon Maryland, Inc. | 11/20/1998 |
| 240 | 374 | Laurel | Landline | Global Crossing Local Services, Inc.-md | 2/27/1999 |
| 240 | 375 | Capitol Heights | Wireless | Sprint Spectrum L.p. | 11/20/1998 |
| 240 | 375 | Suitland | Wireless | Sprint Spectrum L.p. | 11/20/1998 |
| 240 | 375 | District Heights | Wireless | Sprint Spectrum L.p. | 11/20/1998 |
| 240 | 376 | Hughesville | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 377 | Indian Head | Landline | Global Crossing Local Services, Inc.-md | 5/10/1999 |
| 240 | 378 | Cumberland | Landline | Core Communications, Inc. - Md | 10/31/2000 |
| 240 | 379 | Frederick | Landline | Verizon Maryland, Inc. | 3/3/2001 |
| 240 | 380 | Bethesda | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 9/17/2007 |
| 240 | 380 | Glen Echo | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 9/17/2007 |
| 240 | 380 | Cabin John | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 9/17/2007 |
| 240 | 381 | Silver Spring | Wireless | New Cingular Wireless Pcs, Llc - Dc | 1/14/2000 |
| 240 | 382 | Hagerstown | Landline | Teleport Communications America, Llc - Md | 6/11/2009 |
| 240 | 383 | Bethesda | Wireless | New Cingular Wireless Pcs, Llc - Dc | 8/20/2000 |
| 240 | 383 | Chevy Chase | Wireless | New Cingular Wireless Pcs, Llc - Dc | 8/20/2000 |
| 240 | 384 | Callaway | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 384 | Lexington Park | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 384 | Great Mills | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 385 | Myersville | Landline | Verizon Maryland, Inc. | 10/31/2000 |
| 240 | 386 | Gaithersburg | Landline | Verizon Maryland, Inc. | 8/20/2000 |
| 240 | 386 | Montgomery Village | Landline | Verizon Maryland, Inc. | 8/20/2000 |
| 240 | 387 | Bethesda | Landline | Cavalier East Llc - Md | 1/14/2000 |
| 240 | 387 | Chevy Chase | Landline | Cavalier East Llc - Md | 1/14/2000 |
| 240 | 388 | Gaithersburg | Wireless | Sprint Spectrum L.p. | 11/4/2002 |
| 240 | 388 | Montgomery Village | Wireless | Sprint Spectrum L.p. | 11/4/2002 |
| 240 | 389 | Sandy Spring | Landline | Atx Telecommunications Services, Ltd | 6/30/2001 |
| 240 | 389 | Ashton | Landline | Atx Telecommunications Services, Ltd | 6/30/2001 |
| 240 | 389 | Brinklow | Landline | Atx Telecommunications Services, Ltd | 6/30/2001 |
| 240 | 390 | Sandy Spring | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 8/20/2000 |
| 240 | 390 | Ashton | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 8/20/2000 |
| 240 | 390 | Brinklow | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 8/20/2000 |
| 240 | 391 | Riverdale | Landline | Global Crossing Local Services, Inc.-md | 2/27/1999 |
| 240 | 391 | College Park | Landline | Global Crossing Local Services, Inc.-md | 2/27/1999 |
| 240 | 391 | Greenbelt | Landline | Global Crossing Local Services, Inc.-md | 2/27/1999 |
| 240 | 392 | Hyattsville | Landline | Starpower Communications, Llc - Md | 2/27/1999 |
| 240 | 392 | Mount Rainier | Landline | Starpower Communications, Llc - Md | 2/27/1999 |
| 240 | 392 | Brentwood | Landline | Starpower Communications, Llc - Md | 2/27/1999 |
| 240 | 393 | Bethesda | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 6/13/2000 |
| 240 | 393 | Glen Echo | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 6/13/2000 |
| 240 | 393 | Cabin John | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 6/13/2000 |
| 240 | 394 | Mount Airy | Wireless | New Cingular Wireless Pcs, Llc - Dc | 12/13/2004 |
| 240 | 395 | Bethesda | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 8/20/2000 |
| 240 | 395 | Chevy Chase | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 8/20/2000 |
| 240 | 396 | Bethesda | Landline | Global Crossing Local Services, Inc.-md | 2/27/1999 |
| 240 | 396 | Chevy Chase | Landline | Global Crossing Local Services, Inc.-md | 2/27/1999 |
| 240 | 397 | Frederick | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 3/6/2009 |
| 240 | 398 | Bethesda | Wireless | Sprint Spectrum L.p. | 7/3/2002 |
| 240 | 398 | Glen Echo | Wireless | Sprint Spectrum L.p. | 7/3/2002 |
| 240 | 398 | Cabin John | Wireless | Sprint Spectrum L.p. | 7/3/2002 |
| 240 | 399 | Bethesda | Landline | Xo Maryland, Llc | 10/13/1999 |
| 240 | 399 | Chevy Chase | Landline | Xo Maryland, Llc | 10/13/1999 |
| 240 | 400 | Bethesda | Wireless | Sprint Spectrum L.p. | 8/18/2011 |
| 240 | 400 | Chevy Chase | Wireless | Sprint Spectrum L.p. | 8/18/2011 |
| 240 | 401 | Rockville | Wireless | New Cingular Wireless Pcs, Llc - Dc | 11/20/1998 |
| 240 | 402 | Riverdale | Landline | Mci Worldcom Communications, Inc. - Md | 9/21/2010 |
| 240 | 402 | College Park | Landline | Mci Worldcom Communications, Inc. - Md | 9/21/2010 |
| 240 | 402 | Greenbelt | Landline | Mci Worldcom Communications, Inc. - Md | 9/21/2010 |
| 240 | 403 | Rockville | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 8/20/2000 |
| 240 | 403 | Derwood | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 8/20/2000 |
| 240 | 404 | Gaithersburg | Landline | Xo Maryland, Llc | 2/13/2001 |
| 240 | 404 | Montgomery Village | Landline | Xo Maryland, Llc | 2/13/2001 |
| 240 | 405 | Frederick | Landline | Us Lec Of Maryland, Inc. | 7/27/2004 |
| 240 | 406 | Rockville | Wireless | New Cingular Wireless Pcs, Llc - Dc | 9/17/2009 |
| 240 | 406 | Derwood | Wireless | New Cingular Wireless Pcs, Llc - Dc | 9/17/2009 |
| 240 | 407 | Upper Marlboro | Landline | Global Crossing Local Services, Inc.-md | 2/27/1999 |
| 240 | 407 | Cheltenham | Landline | Global Crossing Local Services, Inc.-md | 2/27/1999 |
| 240 | 407 | Andrews Air Force Base | Landline | Global Crossing Local Services, Inc.-md | 2/27/1999 |
| 240 | 408 | Rockville | Wireless | New Cingular Wireless Pcs, Llc - Dc | 10/14/2009 |
| 240 | 408 | Derwood | Wireless | New Cingular Wireless Pcs, Llc - Dc | 10/14/2009 |
| 240 | 409 | Frederick | Wireless | New Cingular Wireless Pcs, Llc - Dc | 2/27/1999 |
| 240 | 412 | Waldorf | Wireless | Sprint Spectrum L.p. | 1/16/2001 |
| 240 | 413 | Hyattsville | Wireless | Omnipoint Communications Cap Operations, Llc | 3/12/2001 |
| 240 | 413 | Mount Rainier | Wireless | Omnipoint Communications Cap Operations, Llc | 3/12/2001 |
| 240 | 413 | Brentwood | Wireless | Omnipoint Communications Cap Operations, Llc | 3/12/2001 |
| 240 | 414 | Hyattsville | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 414 | Mount Rainier | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 414 | Brentwood | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 415 | Frederick | Landline | Ymax Communications Corp. - Md | 12/16/2008 |
| 240 | 416 | Waldorf | Wireless | New Cingular Wireless Pcs, Llc - Dc | 5/18/2001 |
| 240 | 417 | Capitol Heights | Wireless | Sprint Spectrum L.p. | 3/3/2001 |
| 240 | 417 | Suitland | Wireless | Sprint Spectrum L.p. | 3/3/2001 |
| 240 | 417 | District Heights | Wireless | Sprint Spectrum L.p. | 3/3/2001 |
| 240 | 418 | Beltsville | Wireless | Sprint Spectrum L.p. | 11/12/2001 |
| 240 | 418 | Laurel | Wireless | Sprint Spectrum L.p. | 11/12/2001 |
| 240 | 419 | Waldorf | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 10/29/2007 |
| 240 | 420 | Hagerstown | Landline | Verizon Maryland, Inc. | 7/22/1999 |
| 240 | 421 | Rockville | Wireless | Omnipoint Communications Cap Operations, Llc | 4/9/2001 |
| 240 | 422 | Frederick | Wireless | Omnipoint Communications Cap Operations, Llc | 5/15/2002 |
| 240 | 423 | Silver Spring | Wireless | Omnipoint Communications Cap Operations, Llc | 5/21/2001 |
| 240 | 424 | Hyattsville | Wireless | Sprint Spectrum L.p. | 11/16/2007 |
| 240 | 424 | Mount Rainier | Wireless | Sprint Spectrum L.p. | 11/16/2007 |
| 240 | 424 | Brentwood | Wireless | Sprint Spectrum L.p. | 11/16/2007 |
| 240 | 425 | Bethesda | Landline | Dslnet Communications Va, Inc. - Md | 1/25/2001 |
| 240 | 425 | Glen Echo | Landline | Dslnet Communications Va, Inc. - Md | 1/25/2001 |
| 240 | 425 | Cabin John | Landline | Dslnet Communications Va, Inc. - Md | 1/25/2001 |
| 240 | 426 | Bethesda | Wireless | Sprint Spectrum L.p. | 10/25/2001 |
| 240 | 426 | Chevy Chase | Wireless | Sprint Spectrum L.p. | 10/25/2001 |
| 240 | 427 | Waldorf | Landline | Xo Maryland, Llc | 4/23/2001 |
| 240 | 428 | Rockville | Landline | Bandwidth.com Clec, Llc - Md | 10/14/2009 |
| 240 | 428 | Derwood | Landline | Bandwidth.com Clec, Llc - Md | 10/14/2009 |
| 240 | 429 | Silver Spring | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 12/19/2006 |
| 240 | 430 | Silver Spring | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 8/20/2000 |
| 240 | 430 | Bethesda | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 8/20/2000 |
| 240 | 430 | Kensington | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 8/20/2000 |
| 240 | 431 | Callaway | Wireless | Sprint Spectrum L.p. | 10/31/2000 |
| 240 | 431 | Great Mills | Wireless | Sprint Spectrum L.p. | 10/31/2000 |
| 240 | 431 | Tall Timbers | Wireless | Sprint Spectrum L.p. | 10/31/2000 |
| 240 | 432 | Beltsville | Wireless | Sprint Spectrum L.p. | 2/27/1999 |
| 240 | 432 | Laurel | Wireless | Sprint Spectrum L.p. | 2/27/1999 |
| 240 | 433 | Silver Spring | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 8/20/2000 |
| 240 | 433 | Rockville | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 8/20/2000 |
| 240 | 434 | Leonardtown | Landline | Broadwing Communications. Llc - Md | 10/31/2000 |
| 240 | 435 | Waldorf | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 5/7/2009 |
| 240 | 436 | Ijamsville | Landline | Telcove Operations, Inc. - Md | 8/20/2000 |
| 240 | 437 | Sandy Spring | Landline | Xo Maryland, Llc | 6/30/2001 |
| 240 | 437 | Ashton | Landline | Xo Maryland, Llc | 6/30/2001 |
| 240 | 437 | Brinklow | Landline | Xo Maryland, Llc | 6/30/2001 |
| 240 | 438 | Silver Spring | Wireless | Sprint Spectrum L.p. | 8/15/2011 |
| 240 | 439 | Frederick | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 6/6/2008 |
| 240 | 440 | Frederick | Wireless | New Cingular Wireless Pcs, Llc - Dc | 2/27/2009 |
| 240 | 441 | Temple Hills | Wireless | Omnipoint Communications Cap Operations, Llc | 6/6/2001 |
| 240 | 441 | Fort Washington | Wireless | Omnipoint Communications Cap Operations, Llc | 6/6/2001 |
| 240 | 441 | Oxon Hill | Wireless | Omnipoint Communications Cap Operations, Llc | 6/6/2001 |
| 240 | 442 | Oakland | Landline | Verizon Maryland, Inc. | 5/22/2001 |
| 240 | 444 | Laurel | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 9/7/2011 |
| 240 | 445 | Bethesda | Wireless | Sprint Spectrum L.p. | 11/10/2011 |
| 240 | 445 | Chevy Chase | Wireless | Sprint Spectrum L.p. | 11/10/2011 |
| 240 | 446 | Frederick | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 8/9/2001 |
| 240 | 447 | Rockville | Wireless | New Cingular Wireless Pcs, Llc - Dc | 2/27/1999 |
| 240 | 448 | Waldorf | Wireless | Sprint Spectrum L.p. | 9/7/2011 |
| 240 | 449 | Gaithersburg | Wireless | New Cingular Wireless Pcs, Llc - Dc | 3/3/2001 |
| 240 | 449 | Montgomery Village | Wireless | New Cingular Wireless Pcs, Llc - Dc | 3/3/2001 |
| 240 | 450 | Silver Spring | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 8/20/2000 |
| 240 | 451 | Thurmont | Landline | Neutral Tandem-maryland, Llc - Md | 9/2/2016 |
| 240 | 452 | Hagerstown | Landline | Lumos Networks Inc. - Va | 7/22/2010 |
| 240 | 453 | Rockville | Landline | Verizon Maryland, Inc. | 11/20/1998 |
| 240 | 454 | Gaithersburg | Wireless | Paetec Communications, Inc. - Md | 4/22/2005 |
| 240 | 454 | Montgomery Village | Wireless | Paetec Communications, Inc. - Md | 4/22/2005 |
| 240 | 455 | Capitol Heights | Landline | Paetec Communications, Inc. - Md | 6/20/2001 |
| 240 | 455 | Hyattsville | Landline | Paetec Communications, Inc. - Md | 6/20/2001 |
| 240 | 455 | District Heights | Landline | Paetec Communications, Inc. - Md | 6/20/2001 |
| 240 | 456 | Laurel | Landline | Verizon Maryland, Inc. | 8/20/2000 |
| 240 | 457 | Frederick | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 9/4/2008 |
| 240 | 458 | Waldorf | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 10/4/2011 |
| 240 | 459 | Laurel | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 7/27/2010 |
| 240 | 460 | Silver Spring | Wireless | New Cingular Wireless Pcs, Llc - Dc | 7/22/1999 |
| 240 | 461 | Silver Spring | Wireless | New Cingular Wireless Pcs, Llc - Dc | 7/22/1999 |
| 240 | 462 | Beltsville | Wireless | Sprint Spectrum L.p. | 2/27/1999 |
| 240 | 462 | Laurel | Wireless | Sprint Spectrum L.p. | 2/27/1999 |
| 240 | 463 | Silver Spring | Wireless | New Cingular Wireless Pcs, Llc - Dc | 2/27/1999 |
| 240 | 464 | Chevy Chase | Landline | Sprint Spectrum L.p. | 5/10/1999 |
| 240 | 465 | Hyattsville | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 465 | Mount Rainier | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 465 | Brentwood | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 466 | Charlotte Hall | Wireless | New Cingular Wireless Pcs, Llc - Dc | 10/31/2001 |
| 240 | 466 | Hughesville | Wireless | New Cingular Wireless Pcs, Llc - Dc | 10/31/2001 |
| 240 | 466 | Mechanicsville | Wireless | New Cingular Wireless Pcs, Llc - Dc | 10/31/2001 |
| 240 | 467 | Temple Hills | Landline | Comcast Phone Of Northern Maryland, Inc. - Md | 4/25/2013 |
| 240 | 467 | Fort Washington | Landline | Comcast Phone Of Northern Maryland, Inc. - Md | 4/25/2013 |
| 240 | 467 | Oxon Hill | Landline | Comcast Phone Of Northern Maryland, Inc. - Md | 4/25/2013 |
| 240 | 468 | Hyattsville | Wireless | Sprint Spectrum L.p. | 11/16/2007 |
| 240 | 468 | Mount Rainier | Wireless | Sprint Spectrum L.p. | 11/16/2007 |
| 240 | 468 | Brentwood | Wireless | Sprint Spectrum L.p. | 11/16/2007 |
| 240 | 469 | Hagerstown | Wireless | Sprint Spectrum L.p. - Md | 2/14/2008 |
| 240 | 470 | Laurel | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 10/4/2011 |
| 240 | 471 | Silver Spring | Landline | Global Crossing Local Services, Inc.-md | 2/27/1999 |
| 240 | 471 | Rockville | Landline | Global Crossing Local Services, Inc.-md | 2/27/1999 |
| 240 | 472 | Silver Spring | Wireless | New Cingular Wireless Pcs, Llc - Dc | 8/20/2000 |
| 240 | 473 | Riverdale | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 8/20/2000 |
| 240 | 473 | College Park | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 8/20/2000 |
| 240 | 473 | Greenbelt | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 8/20/2000 |
| 240 | 474 | Gaithersburg | Landline | Baltimore-washington Telephone (bwt) | 5/22/2015 |
| 240 | 474 | Montgomery Village | Landline | Baltimore-washington Telephone (bwt) | 5/22/2015 |
| 240 | 475 | Silver Spring | Wireless | New Cingular Wireless Pcs, Llc - Dc | 8/20/2000 |
| 240 | 476 | Silver Spring | Wireless | Omnipoint Communications Cap Operations, Llc | 2/21/2001 |
| 240 | 477 | Gaithersburg | Landline | Lightwave Communications, Llc - Md | 5/20/2005 |
| 240 | 477 | Montgomery Village | Landline | Lightwave Communications, Llc - Md | 5/20/2005 |
| 240 | 478 | Bethesda | Wireless | New Cingular Wireless Pcs, Llc - Dc | 7/27/2004 |
| 240 | 478 | Glen Echo | Wireless | New Cingular Wireless Pcs, Llc - Dc | 7/27/2004 |
| 240 | 478 | Cabin John | Wireless | New Cingular Wireless Pcs, Llc - Dc | 7/27/2004 |
| 240 | 479 | Temple Hills | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 4/7/2008 |
| 240 | 479 | Fort Washington | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 4/7/2008 |
| 240 | 479 | Oxon Hill | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 4/7/2008 |
| 240 | 480 | Bethesda | Wireless | Sprint Spectrum L.p. | 9/27/2010 |
| 240 | 480 | Chevy Chase | Wireless | Sprint Spectrum L.p. | 9/27/2010 |
| 240 | 481 | Silver Spring | Wireless | Omnipoint Communications Cap Operations, Llc | 5/11/2001 |
| 240 | 482 | Bethesda | Landline | Us Lec Of Maryland, Inc. | 1/14/2000 |
| 240 | 482 | Glen Echo | Landline | Us Lec Of Maryland, Inc. | 1/14/2000 |
| 240 | 482 | Cabin John | Landline | Us Lec Of Maryland, Inc. | 1/14/2000 |
| 240 | 483 | Bethesda | Landline | Comcast Phone Of Northern Maryland, Inc. - Md | 10/31/2001 |
| 240 | 483 | Glen Echo | Landline | Comcast Phone Of Northern Maryland, Inc. - Md | 10/31/2001 |
| 240 | 483 | Cabin John | Landline | Comcast Phone Of Northern Maryland, Inc. - Md | 10/31/2001 |
| 240 | 484 | Laurel | Wireless | New Cingular Wireless Pcs, Llc - Dc | 6/12/2017 |
| 240 | 485 | Bethesda | Landline | Us Lec Of Maryland, Inc. | 1/14/2000 |
| 240 | 485 | Glen Echo | Landline | Us Lec Of Maryland, Inc. | 1/14/2000 |
| 240 | 485 | Cabin John | Landline | Us Lec Of Maryland, Inc. | 1/14/2000 |
| 240 | 486 | Glenn Dale | Wireless | Omnipoint Communications Cap Operations, Llc | 3/12/2001 |
| 240 | 486 | Lanham | Wireless | Omnipoint Communications Cap Operations, Llc | 3/12/2001 |
| 240 | 486 | Bowie | Wireless | Omnipoint Communications Cap Operations, Llc | 3/12/2001 |
| 240 | 487 | Hyattsville | Landline | Us Lec Of Maryland, Inc. | 1/14/2000 |
| 240 | 487 | Mount Rainier | Landline | Us Lec Of Maryland, Inc. | 1/14/2000 |
| 240 | 487 | Brentwood | Landline | Us Lec Of Maryland, Inc. | 1/14/2000 |
| 240 | 488 | Oakland | Landline | Shentel Communications, Llc - Md | 5/16/2012 |
| 240 | 489 | Poolesville | Landline | Xo Maryland, Llc | 2/13/2001 |
| 240 | 490 | Middletown | Wireless | Omnipoint Communications Cap Operations, Llc | 6/12/2001 |
| 240 | 491 | Silver Spring | Landline | Global Crossing Local Services, Inc.-md | 2/27/1999 |
| 240 | 492 | Capitol Heights | Landline | Us Lec Of Maryland, Inc. | 1/14/2000 |
| 240 | 492 | Hyattsville | Landline | Us Lec Of Maryland, Inc. | 1/14/2000 |
| 240 | 492 | District Heights | Landline | Us Lec Of Maryland, Inc. | 1/14/2000 |
| 240 | 493 | Temple Hills | Landline | Us Lec Of Maryland, Inc. | 1/14/2000 |
| 240 | 493 | Fort Washington | Landline | Us Lec Of Maryland, Inc. | 1/14/2000 |
| 240 | 493 | Oxon Hill | Landline | Us Lec Of Maryland, Inc. | 1/14/2000 |
| 240 | 494 | Hyattsville | Landline | Cavalier East Llc - Md | 5/9/2001 |
| 240 | 494 | Mount Rainier | Landline | Cavalier East Llc - Md | 5/9/2001 |
| 240 | 494 | Brentwood | Landline | Cavalier East Llc - Md | 5/9/2001 |
| 240 | 495 | Hyattsville | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 10/29/2013 |
| 240 | 495 | Mount Rainier | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 10/29/2013 |
| 240 | 495 | Brentwood | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 10/29/2013 |
| 240 | 496 | Leonardtown | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 3/17/2016 |
| 240 | 497 | Bethesda | Landline | Verizon Maryland, Inc. | 10/31/2000 |
| 240 | 497 | Chevy Chase | Landline | Verizon Maryland, Inc. | 10/31/2000 |
| 240 | 498 | Beltsville | Wireless | Sprint Spectrum L.p. | 10/31/2000 |
| 240 | 498 | Laurel | Wireless | Sprint Spectrum L.p. | 10/31/2000 |
| 240 | 499 | Bethesda | Landline | Us Lec Of Maryland, Inc. | 1/14/2000 |
| 240 | 499 | Glen Echo | Landline | Us Lec Of Maryland, Inc. | 1/14/2000 |
| 240 | 499 | Cabin John | Landline | Us Lec Of Maryland, Inc. | 1/14/2000 |
| 240 | 500 | Hagerstown | Landline | Us Lec Of Maryland, Inc. | 10/21/2010 |
| 240 | 501 | Silver Spring | Wireless | Sprint Spectrum L.p. | 10/8/2001 |
| 240 | 502 | Silver Spring | Wireless | Sprint Spectrum L.p. | 10/4/2011 |
| 240 | 503 | Issue | Landline | Peerless Network Of Maryland, Llc | 4/9/2013 |
| 240 | 503 | Newburg | Landline | Peerless Network Of Maryland, Llc | 4/9/2013 |
| 240 | 503 | Faulkner | Landline | Peerless Network Of Maryland, Llc | 4/9/2013 |
| 240 | 504 | Silver Spring | Wireless | Sprint Spectrum L.p. | 10/4/2011 |
| 240 | 505 | Silver Spring | Wireless | Omnipoint Communications Cap Operations, Llc | 10/31/2001 |
| 240 | 506 | Rockville | Wireless | New Cingular Wireless Pcs, Llc - Dc | 1/9/2002 |
| 240 | 507 | Bethesda | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 9/5/2008 |
| 240 | 507 | Glen Echo | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 9/5/2008 |
| 240 | 507 | Cabin John | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 9/5/2008 |
| 240 | 508 | Capitol Heights | Wireless | Sprint Spectrum L.p. | 2/27/1999 |
| 240 | 508 | Suitland | Wireless | Sprint Spectrum L.p. | 2/27/1999 |
| 240 | 508 | District Heights | Wireless | Sprint Spectrum L.p. | 2/27/1999 |
| 240 | 509 | Gambrills | Landline | Bandwidth.com Clec, Llc - Md | 3/31/2008 |
| 240 | 509 | Crofton | Landline | Bandwidth.com Clec, Llc - Md | 3/31/2008 |
| 240 | 509 | Bowie | Landline | Bandwidth.com Clec, Llc - Md | 3/31/2008 |
| 240 | 510 | Upper Marlboro | Landline | Xo Maryland, Llc | 10/31/2001 |
| 240 | 510 | Lothian | Landline | Xo Maryland, Llc | 10/31/2001 |
| 240 | 512 | Riverdale | Landline | Core Communications, Inc. - Md | 8/8/2006 |
| 240 | 512 | College Park | Landline | Core Communications, Inc. - Md | 8/8/2006 |
| 240 | 512 | Greenbelt | Landline | Core Communications, Inc. - Md | 8/8/2006 |
| 240 | 513 | Hagerstown | Wireless | Sprint Spectrum L.p. - Md | 10/19/2011 |
| 240 | 514 | Bethesda | Landline | Us Lec Of Maryland, Inc. | 1/14/2000 |
| 240 | 514 | Glen Echo | Landline | Us Lec Of Maryland, Inc. | 1/14/2000 |
| 240 | 514 | Cabin John | Landline | Us Lec Of Maryland, Inc. | 1/14/2000 |
| 240 | 515 | Bethesda | Wireless | New Cingular Wireless Pcs, Llc - Dc | 6/20/2001 |
| 240 | 515 | Chevy Chase | Wireless | New Cingular Wireless Pcs, Llc - Dc | 6/20/2001 |
| 240 | 516 | Silver Spring | Landline | Us Lec Of Maryland, Inc. | 1/14/2000 |
| 240 | 516 | Rockville | Landline | Us Lec Of Maryland, Inc. | 1/14/2000 |
| 240 | 517 | Columbia | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 10/28/2014 |
| 240 | 518 | Waldorf | Wireless | Sprint Spectrum L.p. | 10/21/2011 |
| 240 | 519 | Bethesda | Wireless | Sprint Spectrum L.p. | 11/10/2011 |
| 240 | 519 | Chevy Chase | Wireless | Sprint Spectrum L.p. | 11/10/2011 |
| 240 | 520 | Hagerstown | Wireless | Sprint Spectrum L.p. - Md | 3/29/2006 |
| 240 | 521 | Bethesda | Landline | Verizon Maryland, Inc. | 1/10/2017 |
| 240 | 521 | Rockville | Landline | Verizon Maryland, Inc. | 1/10/2017 |
| 240 | 521 | Kensington | Landline | Verizon Maryland, Inc. | 1/10/2017 |
| 240 | 522 | Cumberland | Wireless | Sprint Spectrum L.p. | 12/12/2001 |
| 240 | 523 | La Plata | Landline | Xo Maryland, Llc | 2/13/2001 |
| 240 | 523 | Bel Alton | Landline | Xo Maryland, Llc | 2/13/2001 |
| 240 | 523 | Port Tobacco | Landline | Xo Maryland, Llc | 2/13/2001 |
| 240 | 524 | Laurel | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 525 | Upper Marlboro | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 525 | Lothian | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 526 | Leonardtown | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 527 | Hagerstown | Landline | Verizon Maryland, Inc. | 10/31/2000 |
| 240 | 528 | Hughesville | Landline | Broadwing Communications. Llc - Md | 10/31/2000 |
| 240 | 529 | Frederick | Landline | Verizon Maryland, Inc. | 10/31/2000 |
| 240 | 530 | Waldorf | Landline | Local Access Llc - Md | 8/1/2013 |
| 240 | 531 | Silver Spring | Landline | Telnyx Llc | 3/7/2017 |
| 240 | 532 | Hyattsville | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 10/29/2013 |
| 240 | 532 | Mount Rainier | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 10/29/2013 |
| 240 | 532 | Brentwood | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 10/29/2013 |
| 240 | 533 | Hyattsville | Landline | Teleport Communications America, Llc - Dc | 7/22/1999 |
| 240 | 533 | Mount Rainier | Landline | Teleport Communications America, Llc - Dc | 7/22/1999 |
| 240 | 533 | Brentwood | Landline | Teleport Communications America, Llc - Dc | 7/22/1999 |
| 240 | 534 | Bethesda | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 4/11/2016 |
| 240 | 534 | Chevy Chase | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 4/11/2016 |
| 240 | 535 | Silver Spring | Wireless | New Cingular Wireless Pcs, Llc - Dc | 1/9/2001 |
| 240 | 536 | Sandy Spring | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 536 | Ashton | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 536 | Brinklow | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 537 | Washington | Unknown | Atlantech Online, Inc. - Md | 9/15/2017 |
| 240 | 538 | Leonardtown | Landline | Xo Maryland, Llc | 2/13/2001 |
| 240 | 539 | Hyattsville | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 539 | Mount Rainier | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 539 | Brentwood | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 540 | Ellicott City | Landline | Wide Voice, Llc - Md | 10/5/2016 |
| 240 | 540 | Columbia | Landline | Wide Voice, Llc - Md | 10/5/2016 |
| 240 | 541 | Bethesda | Wireless | Sprint Spectrum L.p. | 10/31/2011 |
| 240 | 541 | Chevy Chase | Wireless | Sprint Spectrum L.p. | 10/31/2011 |
| 240 | 542 | Riverdale | Landline | Us Lec Of Maryland, Inc. | 1/14/2000 |
| 240 | 542 | College Park | Landline | Us Lec Of Maryland, Inc. | 1/14/2000 |
| 240 | 542 | Greenbelt | Landline | Us Lec Of Maryland, Inc. | 1/14/2000 |
| 240 | 543 | Bethesda | Wireless | Sprint Spectrum L.p. | 7/25/2006 |
| 240 | 543 | Chevy Chase | Wireless | Sprint Spectrum L.p. | 7/25/2006 |
| 240 | 544 | Glenn Dale | Landline | Us Lec Of Maryland, Inc. | 1/14/2000 |
| 240 | 544 | Lanham | Landline | Us Lec Of Maryland, Inc. | 1/14/2000 |
| 240 | 544 | Bowie | Landline | Us Lec Of Maryland, Inc. | 1/14/2000 |
| 240 | 545 | Upper Marlboro | Landline | Us Lec Of Maryland, Inc. | 1/14/2000 |
| 240 | 545 | Lothian | Landline | Us Lec Of Maryland, Inc. | 1/14/2000 |
| 240 | 546 | Clinton | Landline | Us Lec Of Maryland, Inc. | 1/14/2000 |
| 240 | 546 | Cheltenham | Landline | Us Lec Of Maryland, Inc. | 1/14/2000 |
| 240 | 546 | Andrews Air Force Base | Landline | Us Lec Of Maryland, Inc. | 1/14/2000 |
| 240 | 547 | Laurel | Landline | Level 3 Communications, Llc - Md | 7/22/1999 |
| 240 | 548 | Hyattsville | Landline | Allegiance Telecom, Inc. - Md | 10/31/2000 |
| 240 | 548 | Mount Rainier | Landline | Allegiance Telecom, Inc. - Md | 10/31/2000 |
| 240 | 548 | Brentwood | Landline | Allegiance Telecom, Inc. - Md | 10/31/2000 |
| 240 | 549 | Frederick | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 3/17/2016 |
| 240 | 550 | Rockville | Wireless | New Cingular Wireless Pcs, Llc - Dc | 3/26/2009 |
| 240 | 550 | Derwood | Wireless | New Cingular Wireless Pcs, Llc - Dc | 3/26/2009 |
| 240 | 551 | Rockville | Wireless | New Cingular Wireless Pcs, Llc - Dc | 3/25/2009 |
| 240 | 551 | Derwood | Wireless | New Cingular Wireless Pcs, Llc - Dc | 3/25/2009 |
| 240 | 552 | Rockville | Wireless | New Cingular Wireless Pcs, Llc - Dc | 3/25/2009 |
| 240 | 552 | Derwood | Wireless | New Cingular Wireless Pcs, Llc - Dc | 3/25/2009 |
| 240 | 553 | Hyattsville | Landline | Allegiance Telecom, Inc. - Md | 8/20/2000 |
| 240 | 553 | Mount Rainier | Landline | Allegiance Telecom, Inc. - Md | 8/20/2000 |
| 240 | 553 | Brentwood | Landline | Allegiance Telecom, Inc. - Md | 8/20/2000 |
| 240 | 554 | Laurel | Landline | Allegiance Telecom, Inc. - Md | 10/31/2000 |
| 240 | 556 | Glenn Dale | Landline | Paetec Communications, Inc. - Md | 10/31/2001 |
| 240 | 556 | Lanham | Landline | Paetec Communications, Inc. - Md | 10/31/2001 |
| 240 | 556 | Bowie | Landline | Paetec Communications, Inc. - Md | 10/31/2001 |
| 240 | 557 | Hyattsville | Wireless | Omnipoint Communications Cap Operations, Llc | 3/14/2017 |
| 240 | 557 | Mount Rainier | Wireless | Omnipoint Communications Cap Operations, Llc | 3/14/2017 |
| 240 | 557 | Brentwood | Wireless | Omnipoint Communications Cap Operations, Llc | 3/14/2017 |
| 240 | 558 | Silver Spring | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 6/30/2001 |
| 240 | 558 | Bethesda | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 6/30/2001 |
| 240 | 558 | Kensington | Landline | Cavalier Telephone Mid-atlantic, Llc - Md | 6/30/2001 |
| 240 | 559 | Sandy Spring | Landline | Allegiance Telecom, Inc. - Md | 10/31/2000 |
| 240 | 559 | Ashton | Landline | Allegiance Telecom, Inc. - Md | 10/31/2000 |
| 240 | 559 | Brinklow | Landline | Allegiance Telecom, Inc. - Md | 10/31/2000 |
| 240 | 560 | Bethesda | Landline | Xo Maryland, Llc | 4/23/2001 |
| 240 | 560 | Chevy Chase | Landline | Xo Maryland, Llc | 4/23/2001 |
| 240 | 561 | Leonardtown | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 7/7/2008 |
| 240 | 562 | Gaithersburg | Landline | Mcimetro Access Transmission Services Llc | 6/12/2015 |
| 240 | 562 | Montgomery Village | Landline | Mcimetro Access Transmission Services Llc | 6/12/2015 |
| 240 | 563 | Capitol Heights | Landline | Neutral Tandem-maryland, Llc - Md | 7/5/2017 |
| 240 | 563 | Hyattsville | Landline | Neutral Tandem-maryland, Llc - Md | 7/5/2017 |
| 240 | 563 | District Heights | Landline | Neutral Tandem-maryland, Llc - Md | 7/5/2017 |
| 240 | 564 | NA | Unknown | Cellco Partnership Dba Verizon Wireless - Md | 9/22/2017 |
| 240 | 565 | Laurel | Wireless | Omnipoint Communications Cap Operations, Llc | 12/30/2005 |
| 240 | 566 | Frederick | Landline | Verizon Maryland, Inc. | 6/11/2002 |
| 240 | 567 | Rockville | Landline | Verizon Maryland, Inc. | 7/12/2006 |
| 240 | 567 | Derwood | Landline | Verizon Maryland, Inc. | 7/12/2006 |
| 240 | 568 | Laurel | Landline | Verizon Maryland, Inc. | 7/22/1999 |
| 240 | 569 | Allegany | Unknown | Bandwidth.com Clec, Llc - Md | 9/22/2017 |
| 240 | 570 | Dayton | Landline | Neutral Tandem-maryland, Llc - Md | 2/24/2016 |
| 240 | 570 | Highland | Landline | Neutral Tandem-maryland, Llc - Md | 2/24/2016 |
| 240 | 570 | Clarksville | Landline | Neutral Tandem-maryland, Llc - Md | 2/24/2016 |
| 240 | 573 | Upper Marlboro | Landline | Global Crossing Local Services, Inc.-md | 7/22/1999 |
| 240 | 573 | Cheltenham | Landline | Global Crossing Local Services, Inc.-md | 7/22/1999 |
| 240 | 573 | Andrews Air Force Base | Landline | Global Crossing Local Services, Inc.-md | 7/22/1999 |
| 240 | 575 | Frederick | Landline | Level 3 Communications, Llc - Md | 12/30/2005 |
| 240 | 577 | Leonardtown | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 8/9/2006 |
| 240 | 578 | Frederick | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 7/8/2011 |
| 240 | 580 | Cumberland | Wireless | Sprint Spectrum L.p. | 6/14/2001 |
| 240 | 581 | Laurel | Landline | Paetec Communications, Inc. - Dc | 3/3/2001 |
| 240 | 582 | Hyattsville | Landline | Verizon Maryland, Inc. | 7/22/1999 |
| 240 | 582 | Bladensburg | Landline | Verizon Maryland, Inc. | 7/22/1999 |
| 240 | 582 | Riverdale | Landline | Verizon Maryland, Inc. | 7/22/1999 |
| 240 | 583 | Beltsville | Landline | Verizon Maryland, Inc. | 4/28/2010 |
| 240 | 583 | Laurel | Landline | Verizon Maryland, Inc. | 4/28/2010 |
| 240 | 585 | Waldorf | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 6/29/2011 |
| 240 | 586 | Frederick | Landline | Verizon Maryland, Inc. | 12/22/2006 |
| 240 | 587 | Leonardtown | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 7/6/2009 |
| 240 | 592 | Laurel | Landline | Verizon Maryland, Inc. | 7/1/2016 |
| 240 | 593 | Laurel | Wireless | Omnipoint Communications Cap Operations, Llc | 3/13/2001 |
| 240 | 595 | Bethesda | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 9/13/2006 |
| 240 | 595 | Chevy Chase | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 9/13/2006 |
| 240 | 597 | Gaithersburg | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 597 | Montgomery Village | Landline | Peerless Network Of Maryland, Llc | 2/27/1999 |
| 240 | 599 | Rockville | Landline | Broadwing Communications. Llc - Md | 7/22/1999 |
| 240 | 599 | Derwood | Landline | Broadwing Communications. Llc - Md | 7/22/1999 |
| 240 | 600 | Hyattsville | Wireless | Sprint Spectrum L.p. | 4/27/2011 |
| 240 | 600 | Mount Rainier | Wireless | Sprint Spectrum L.p. | 4/27/2011 |
| 240 | 600 | Brentwood | Wireless | Sprint Spectrum L.p. | 4/27/2011 |
| 240 | 601 | Beltsville | Wireless | Sprint Spectrum L.p. | 7/22/1999 |
| 240 | 601 | Laurel | Wireless | Sprint Spectrum L.p. | 7/22/1999 |
| 240 | 602 | Beltsville | Wireless | Sprint Spectrum L.p. | 7/22/1999 |
| 240 | 602 | Laurel | Wireless | Sprint Spectrum L.p. | 7/22/1999 |
| 240 | 603 | Beltsville | Wireless | Sprint Spectrum L.p. | 7/22/1999 |
| 240 | 603 | Laurel | Wireless | Sprint Spectrum L.p. | 7/22/1999 |
| 240 | 604 | Beltsville | Wireless | Sprint Spectrum L.p. | 7/22/1999 |
| 240 | 604 | Laurel | Wireless | Sprint Spectrum L.p. | 7/22/1999 |
| 240 | 605 | Beltsville | Wireless | Sprint Spectrum L.p. | 7/22/1999 |
| 240 | 605 | Laurel | Wireless | Sprint Spectrum L.p. | 7/22/1999 |
| 240 | 606 | Beltsville | Wireless | Sprint Spectrum L.p. | 7/22/1999 |
| 240 | 606 | Laurel | Wireless | Sprint Spectrum L.p. | 7/22/1999 |
| 240 | 607 | Upper Marlboro | Landline | Global Crossing Local Services, Inc.-md | 5/10/1999 |
| 240 | 607 | Cheltenham | Landline | Global Crossing Local Services, Inc.-md | 5/10/1999 |
| 240 | 607 | Andrews Air Force Base | Landline | Global Crossing Local Services, Inc.-md | 5/10/1999 |
| 240 | 608 | Frederick | Wireless | 365 Wireless, Llc | 3/11/2013 |
| 240 | 609 | Cumberland | Wireless | New Cingular Wireless Pcs, Llc - Dc | 9/11/2014 |
| 240 | 612 | Hyattsville | Landline | Level 3 Telecom Of Maryland, Llc - Md | 8/4/2010 |
| 240 | 612 | Mount Rainier | Landline | Level 3 Telecom Of Maryland, Llc - Md | 8/4/2010 |
| 240 | 612 | Brentwood | Landline | Level 3 Telecom Of Maryland, Llc - Md | 8/4/2010 |
| 240 | 613 | Hyattsville | Landline | Us Lec Of Maryland, Inc. | 4/5/2012 |
| 240 | 613 | Mount Rainier | Landline | Us Lec Of Maryland, Inc. | 4/5/2012 |
| 240 | 613 | Brentwood | Landline | Us Lec Of Maryland, Inc. | 4/5/2012 |
| 240 | 614 | Rockville | Wireless | Metro Pcs, Inc. | 7/16/2013 |
| 240 | 614 | Derwood | Wireless | Metro Pcs, Inc. | 7/16/2013 |
| 240 | 615 | Hyattsville | Wireless | Metro Pcs, Inc. | 5/29/2013 |
| 240 | 615 | Mount Rainier | Wireless | Metro Pcs, Inc. | 5/29/2013 |
| 240 | 615 | Brentwood | Wireless | Metro Pcs, Inc. | 5/29/2013 |
| 240 | 616 | Riverdale | Landline | Mci Worldcom Communications, Inc. - Md | 6/30/2001 |
| 240 | 616 | College Park | Landline | Mci Worldcom Communications, Inc. - Md | 6/30/2001 |
| 240 | 616 | Greenbelt | Landline | Mci Worldcom Communications, Inc. - Md | 6/30/2001 |
| 240 | 617 | Hagerstown | Landline | Bandwidth.com Clec, Llc - Md | 7/16/2015 |
| 240 | 618 | Rockville | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 10/7/2014 |
| 240 | 618 | Derwood | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 10/7/2014 |
| 240 | 619 | Bethesda | Landline | Mci Worldcom Communications, Inc. - Md | 8/20/2000 |
| 240 | 619 | Chevy Chase | Landline | Mci Worldcom Communications, Inc. - Md | 8/20/2000 |
| 240 | 620 | Rockville | Landline | Mci Worldcom Communications, Inc. - Md | 8/20/2000 |
| 240 | 620 | Derwood | Landline | Mci Worldcom Communications, Inc. - Md | 8/20/2000 |
| 240 | 621 | Silver Spring | Landline | Mci Worldcom Communications, Inc. - Md | 8/20/2000 |
| 240 | 621 | Bethesda | Landline | Mci Worldcom Communications, Inc. - Md | 8/20/2000 |
| 240 | 621 | Kensington | Landline | Mci Worldcom Communications, Inc. - Md | 8/20/2000 |
| 240 | 623 | Hyattsville | Landline | Bandwidth.com Clec, Llc - Md | 12/8/2014 |
| 240 | 623 | Mount Rainier | Landline | Bandwidth.com Clec, Llc - Md | 12/8/2014 |
| 240 | 623 | Brentwood | Landline | Bandwidth.com Clec, Llc - Md | 12/8/2014 |
| 240 | 624 | Riverdale | Landline | Verizon Maryland, Inc. | 6/13/2000 |
| 240 | 624 | College Park | Landline | Verizon Maryland, Inc. | 6/13/2000 |
| 240 | 624 | Greenbelt | Landline | Verizon Maryland, Inc. | 6/13/2000 |
| 240 | 625 | Hagerstown | Wireless | Sprint Spectrum L.p. | 4/17/2001 |
| 240 | 626 | Frederick | Wireless | Sprint Spectrum L.p. | 5/10/1999 |
| 240 | 627 | Silver Spring | Landline | Global Crossing Local Services, Inc.-md | 2/27/1999 |
| 240 | 627 | Bethesda | Landline | Global Crossing Local Services, Inc.-md | 2/27/1999 |
| 240 | 627 | Kensington | Landline | Global Crossing Local Services, Inc.-md | 2/27/1999 |
| 240 | 629 | Frederick | Landline | Verizon Maryland, Inc. | 10/13/1999 |
| 240 | 630 | Hyattsville | Landline | Bandwidth.com Clec, Llc - Md | 10/31/2011 |
| 240 | 630 | Mount Rainier | Landline | Bandwidth.com Clec, Llc - Md | 10/31/2011 |
| 240 | 630 | Brentwood | Landline | Bandwidth.com Clec, Llc - Md | 10/31/2011 |
| 240 | 631 | Gaithersburg | Landline | Verizon Maryland, Inc. | 11/20/1998 |
| 240 | 631 | Montgomery Village | Landline | Verizon Maryland, Inc. | 11/20/1998 |
| 240 | 632 | Gaithersburg | Landline | Verizon Maryland, Inc. | 7/22/1999 |
| 240 | 632 | Montgomery Village | Landline | Verizon Maryland, Inc. | 7/22/1999 |
| 240 | 633 | Hughesville | Landline | Baltimore-washington Telephone (bwt) | 5/22/2015 |
| 240 | 636 | Laurel | Wireless | Omnipoint Communications Cap Operations, Llc | 11/10/2011 |
| 240 | 638 | Hyattsville | Landline | Broadwing Communications. Llc - Md | 5/10/1999 |
| 240 | 638 | Mount Rainier | Landline | Broadwing Communications. Llc - Md | 5/10/1999 |
| 240 | 638 | Brentwood | Landline | Broadwing Communications. Llc - Md | 5/10/1999 |
| 240 | 640 | Waldorf | Wireless | New Cingular Wireless Pcs, Llc - Dc | 3/24/2009 |
| 240 | 641 | Silver Spring | Landline | Peerless Network Of Maryland, Llc | 10/13/1999 |
| 240 | 643 | Silver Spring | Wireless | Omnipoint Communications Cap Operations, Llc | 5/16/2002 |
| 240 | 644 | Bethesda | Landline | Xo Maryland, Llc | 10/31/2000 |
| 240 | 644 | Chevy Chase | Landline | Xo Maryland, Llc | 10/31/2000 |
| 240 | 645 | Bethesda | Landline | Xo Maryland, Llc | 10/31/2000 |
| 240 | 645 | Chevy Chase | Landline | Xo Maryland, Llc | 10/31/2000 |
| 240 | 646 | Laurel | Landline | Cavalier East Llc - Md | 10/13/1999 |
| 240 | 650 | Bethesda | Landline | Broadvox-clec, Llc - Md | 11/17/2011 |
| 240 | 650 | Glen Echo | Landline | Broadvox-clec, Llc - Md | 11/17/2011 |
| 240 | 650 | Cabin John | Landline | Broadvox-clec, Llc - Md | 11/17/2011 |
| 240 | 651 | Frederick | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 11/28/2011 |
| 240 | 652 | Charlotte Hall | Landline | Xo Maryland, Llc | 2/13/2001 |
| 240 | 652 | Hughesville | Landline | Xo Maryland, Llc | 2/13/2001 |
| 240 | 652 | Mechanicsville | Landline | Xo Maryland, Llc | 2/13/2001 |
| 240 | 654 | Gaithersburg | Wireless | New Cingular Wireless Pcs, Llc - Dc | 5/19/2006 |
| 240 | 654 | Montgomery Village | Wireless | New Cingular Wireless Pcs, Llc - Dc | 5/19/2006 |
| 240 | 657 | Frederick | Landline | Mci Worldcom Communications, Inc. - Md | 1/6/2016 |
| 240 | 660 | Rockville | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 3/31/2015 |
| 240 | 660 | Derwood | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 3/31/2015 |
| 240 | 661 | Callaway | Landline | Baltimore-washington Telephone (bwt) | 5/21/2015 |
| 240 | 661 | Lexington Park | Landline | Baltimore-washington Telephone (bwt) | 5/21/2015 |
| 240 | 661 | Great Mills | Landline | Baltimore-washington Telephone (bwt) | 5/21/2015 |
| 240 | 662 | Silver Spring | Landline | Verizon Maryland, Inc. | 1/14/2000 |
| 240 | 662 | Takoma Park | Landline | Verizon Maryland, Inc. | 1/14/2000 |
| 240 | 665 | Bethesda | Wireless | Omnipoint Communications Cap Operations, Llc | 1/9/2017 |
| 240 | 665 | Glen Echo | Wireless | Omnipoint Communications Cap Operations, Llc | 1/9/2017 |
| 240 | 665 | Cabin John | Wireless | Omnipoint Communications Cap Operations, Llc | 1/9/2017 |
| 240 | 666 | Nanjemoy | Landline | Voxbeam Telecommunications Inc. - Md | 6/25/2015 |
| 240 | 667 | Hyattsville | Landline | Global Crossing Local Services, Inc.-md | 2/27/1999 |
| 240 | 667 | Mount Rainier | Landline | Global Crossing Local Services, Inc.-md | 2/27/1999 |
| 240 | 667 | Brentwood | Landline | Global Crossing Local Services, Inc.-md | 2/27/1999 |
| 240 | 668 | Clarksburg | Landline | Starpower Communications, Llc - Md | 11/20/1998 |
| 240 | 668 | Damascus | Landline | Starpower Communications, Llc - Md | 11/20/1998 |
| 240 | 668 | Monrovia | Landline | Starpower Communications, Llc - Md | 11/20/1998 |
| 240 | 669 | Hyattsville | Landline | Comcast Phone Of Northern Maryland, Inc. - Md | 10/31/2000 |
| 240 | 669 | Mount Rainier | Landline | Comcast Phone Of Northern Maryland, Inc. - Md | 10/31/2000 |
| 240 | 669 | Brentwood | Landline | Comcast Phone Of Northern Maryland, Inc. - Md | 10/31/2000 |
| 240 | 670 | Hyattsville | Landline | Local Access Llc - Md | 3/6/2012 |
| 240 | 670 | Mount Rainier | Landline | Local Access Llc - Md | 3/6/2012 |
| 240 | 670 | Brentwood | Landline | Local Access Llc - Md | 3/6/2012 |
| 240 | 671 | Hyattsville | Wireless | Sprint Spectrum L.p. | 10/31/2000 |
| 240 | 671 | Mount Rainier | Wireless | Sprint Spectrum L.p. | 10/31/2000 |
| 240 | 671 | Brentwood | Wireless | Sprint Spectrum L.p. | 10/31/2000 |
| 240 | 672 | Rockville | Landline | Cellco Partnership Dba Verizon Wireless - Md | 10/31/2000 |
| 240 | 672 | Derwood | Landline | Cellco Partnership Dba Verizon Wireless - Md | 10/31/2000 |
| 240 | 674 | Frederick | Wireless | Sprint Spectrum L.p. | 10/13/1999 |
| 240 | 675 | Myersville | Wireless | New Cingular Wireless Pcs, Llc - Dc | 5/10/1999 |
| 240 | 676 | Silver Spring | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 2/27/1999 |
| 240 | 678 | Silver Spring | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 2/27/1999 |
| 240 | 681 | Brandywine | Landline | Atx Telecommunications Services, Ltd | 10/30/2003 |
| 240 | 682 | Waldorf | Landline | Starpower Communications, Llc - Md | 11/20/1998 |
| 240 | 683 | Gaithersburg | Landline | Verizon Maryland, Inc. | 3/3/2001 |
| 240 | 683 | Montgomery Village | Landline | Verizon Maryland, Inc. | 3/3/2001 |
| 240 | 684 | Riverdale | Landline | Verizon Maryland, Inc. | 10/31/2000 |
| 240 | 684 | College Park | Landline | Verizon Maryland, Inc. | 10/31/2000 |
| 240 | 684 | Greenbelt | Landline | Verizon Maryland, Inc. | 10/31/2000 |
| 240 | 685 | Upper Marlboro | Landline | Global Crossing Local Services, Inc.-md | 5/10/1999 |
| 240 | 685 | Cheltenham | Landline | Global Crossing Local Services, Inc.-md | 5/10/1999 |
| 240 | 685 | Andrews Air Force Base | Landline | Global Crossing Local Services, Inc.-md | 5/10/1999 |
| 240 | 686 | Gaithersburg | Landline | Verizon Maryland, Inc. | 3/3/2001 |
| 240 | 686 | Montgomery Village | Landline | Verizon Maryland, Inc. | 3/3/2001 |
| 240 | 687 | Silver Spring | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 2/27/1999 |
| 240 | 688 | Silver Spring | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 6/12/2006 |
| 240 | 690 | Gaithersburg | Landline | Teleport Communications America, Llc - Dc | 11/10/2016 |
| 240 | 690 | Montgomery Village | Landline | Teleport Communications America, Llc - Dc | 11/10/2016 |
| 240 | 691 | Upper Marlboro | Landline | Global Crossing Local Services, Inc.-md | 2/27/1999 |
| 240 | 691 | Cheltenham | Landline | Global Crossing Local Services, Inc.-md | 2/27/1999 |
| 240 | 691 | Andrews Air Force Base | Landline | Global Crossing Local Services, Inc.-md | 2/27/1999 |
| 240 | 694 | Bethesda | Landline | Verizon Maryland, Inc. | 11/20/1998 |
| 240 | 694 | Rockville | Landline | Verizon Maryland, Inc. | 11/20/1998 |
| 240 | 694 | Kensington | Landline | Verizon Maryland, Inc. | 11/20/1998 |
| 240 | 695 | Temple Hills | Landline | Verizon Maryland, Inc. | 11/20/1998 |
| 240 | 695 | Oxon Hill | Landline | Verizon Maryland, Inc. | 11/20/1998 |
| 240 | 695 | Suitland | Landline | Verizon Maryland, Inc. | 11/20/1998 |
| 240 | 696 | Hyattsville | Landline | Level 3 Communications, Llc - Md | 7/22/1999 |
| 240 | 696 | Mount Rainier | Landline | Level 3 Communications, Llc - Md | 7/22/1999 |
| 240 | 696 | Brentwood | Landline | Level 3 Communications, Llc - Md | 7/22/1999 |
| 240 | 699 | Frederick | Landline | Verizon Maryland, Inc. | 5/22/2001 |
| 240 | 699 | Adamstown | Landline | Verizon Maryland, Inc. | 5/22/2001 |
| 240 | 701 | Silver Spring | Wireless | New Cingular Wireless Pcs, Llc - Dc | 3/25/2009 |
| 240 | 702 | Gaithersburg | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 10/7/2014 |
| 240 | 702 | Montgomery Village | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 10/7/2014 |
| 240 | 704 | Hyattsville | Wireless | New Cingular Wireless Pcs, Llc - Dc | 3/25/2009 |
| 240 | 704 | Mount Rainier | Wireless | New Cingular Wireless Pcs, Llc - Dc | 3/25/2009 |
| 240 | 704 | Brentwood | Wireless | New Cingular Wireless Pcs, Llc - Dc | 3/25/2009 |
| 240 | 705 | Bethesda | Wireless | New Cingular Wireless Pcs, Llc - Dc | 3/25/2009 |
| 240 | 705 | Chevy Chase | Wireless | New Cingular Wireless Pcs, Llc - Dc | 3/25/2009 |
| 240 | 706 | Bethesda | Wireless | New Cingular Wireless Pcs, Llc - Dc | 3/26/2009 |
| 240 | 706 | Chevy Chase | Wireless | New Cingular Wireless Pcs, Llc - Dc | 3/26/2009 |
| 240 | 707 | Hagerstown | Wireless | New Cingular Wireless Pcs, Llc - Dc | 1/27/2012 |
| 240 | 708 | Columbia | Wireless | Level 3 Communications, Llc - Md | 6/8/2012 |
| 240 | 712 | Columbia | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 11/1/2011 |
| 240 | 713 | Laurel | Landline | Peerless Network Of Maryland, Llc | 11/2/2011 |
| 240 | 714 | Hyattsville | Wireless | Omnipoint Communications Cap Operations, Llc | 2/20/2015 |
| 240 | 714 | Mount Rainier | Wireless | Omnipoint Communications Cap Operations, Llc | 2/20/2015 |
| 240 | 714 | Brentwood | Wireless | Omnipoint Communications Cap Operations, Llc | 2/20/2015 |
| 240 | 715 | Rockville | Landline | Global Crossing Local Services, Inc.-md | 2/27/1999 |
| 240 | 715 | Derwood | Landline | Global Crossing Local Services, Inc.-md | 2/27/1999 |
| 240 | 716 | Capitol Heights | Wireless | Omnipoint Communications Cap Operations, Llc | 11/15/2013 |
| 240 | 716 | Hyattsville | Wireless | Omnipoint Communications Cap Operations, Llc | 11/15/2013 |
| 240 | 716 | District Heights | Wireless | Omnipoint Communications Cap Operations, Llc | 11/15/2013 |
| 240 | 718 | Callaway | Landline | Xo Maryland, Llc | 2/13/2001 |
| 240 | 718 | Lexington Park | Landline | Xo Maryland, Llc | 2/13/2001 |
| 240 | 718 | Great Mills | Landline | Xo Maryland, Llc | 2/13/2001 |
| 240 | 719 | Capitol Heights | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 4/11/2016 |
| 240 | 719 | Hyattsville | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 4/11/2016 |
| 240 | 719 | District Heights | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 4/11/2016 |
| 240 | 720 | Gaithersburg | Landline | Global Crossing Local Services, Inc.-md | 2/27/1999 |
| 240 | 720 | Montgomery Village | Landline | Global Crossing Local Services, Inc.-md | 2/27/1999 |
| 240 | 722 | Sandy Spring | Landline | Global Crossing Local Services, Inc.-md | 2/27/1999 |
| 240 | 722 | Ashton | Landline | Global Crossing Local Services, Inc.-md | 2/27/1999 |
| 240 | 722 | Brinklow | Landline | Global Crossing Local Services, Inc.-md | 2/27/1999 |
| 240 | 723 | Silver Spring | Landline | Cellco Partnership Dba Verizon Wireless - Md | 5/10/1999 |
| 240 | 724 | Hyattsville | Landline | Cavalier East Llc - Md | 10/31/2000 |
| 240 | 724 | Mount Rainier | Landline | Cavalier East Llc - Md | 10/31/2000 |
| 240 | 724 | Brentwood | Landline | Cavalier East Llc - Md | 10/31/2000 |
| 240 | 725 | Patuxent River | Landline | Verizon Maryland, Inc. | 11/20/1998 |
| 240 | 725 | Lexington Park | Landline | Verizon Maryland, Inc. | 11/20/1998 |
| 240 | 725 | Great Mills | Landline | Verizon Maryland, Inc. | 11/20/1998 |
| 240 | 727 | Cumberland | Wireless | New Cingular Wireless Pcs, Llc - Dc | 7/22/1999 |
| 240 | 731 | Rockville | Wireless | New Cingular Wireless Pcs, Llc - Dc | 10/31/2000 |
| 240 | 732 | Mount Airy | Wireless | New Cingular Wireless Pcs, Llc - Dc | 11/12/2015 |
| 240 | 734 | Hagerstown | Landline | Bandwidth.com Clec, Llc - Md | 3/22/2012 |
| 240 | 737 | Hyattsville | Landline | Cavalier East Llc - Md | 5/9/2001 |
| 240 | 737 | Mount Rainier | Landline | Cavalier East Llc - Md | 5/9/2001 |
| 240 | 737 | Brentwood | Landline | Cavalier East Llc - Md | 5/9/2001 |
| 240 | 740 | Bethesda | Landline | Atlantech Online, Inc. - Md | 9/3/2015 |
| 240 | 740 | Glen Echo | Landline | Atlantech Online, Inc. - Md | 9/3/2015 |
| 240 | 740 | Cabin John | Landline | Atlantech Online, Inc. - Md | 9/3/2015 |
| 240 | 743 | Bethesda | Landline | Local Access Llc - Md | 11/16/2006 |
| 240 | 743 | Glen Echo | Landline | Local Access Llc - Md | 11/16/2006 |
| 240 | 743 | Cabin John | Landline | Local Access Llc - Md | 11/16/2006 |
| 240 | 744 | Hyattsville | Landline | Broadwing Communications. Llc - Md | 5/10/1999 |
| 240 | 744 | Mount Rainier | Landline | Broadwing Communications. Llc - Md | 5/10/1999 |
| 240 | 744 | Brentwood | Landline | Broadwing Communications. Llc - Md | 5/10/1999 |
| 240 | 745 | Clarksburg | Landline | Xo Maryland, Llc | 10/31/2001 |
| 240 | 745 | Damascus | Landline | Xo Maryland, Llc | 10/31/2001 |
| 240 | 745 | Monrovia | Landline | Xo Maryland, Llc | 10/31/2001 |
| 240 | 747 | Hyattsville | Landline | Cavalier East Llc - Md | 5/9/2001 |
| 240 | 747 | Mount Rainier | Landline | Cavalier East Llc - Md | 5/9/2001 |
| 240 | 747 | Brentwood | Landline | Cavalier East Llc - Md | 5/9/2001 |
| 240 | 750 | Gaithersburg | Wireless | New Cingular Wireless Pcs, Llc - Dc | 5/6/2005 |
| 240 | 750 | Montgomery Village | Wireless | New Cingular Wireless Pcs, Llc - Dc | 5/6/2005 |
| 240 | 751 | Gaithersburg | Landline | Telcove Operations, Inc. - Md | 8/20/2000 |
| 240 | 751 | Montgomery Village | Landline | Telcove Operations, Inc. - Md | 8/20/2000 |
| 240 | 752 | Bethesda | Landline | Telcove Operations, Inc. - Md | 8/20/2000 |
| 240 | 752 | Chevy Chase | Landline | Telcove Operations, Inc. - Md | 8/20/2000 |
| 240 | 753 | Rockville | Landline | Telcove Operations, Inc. - Md | 8/20/2000 |
| 240 | 754 | Waldorf | Landline | Level 3 Communications, Llc - Md | 11/11/2011 |
| 240 | 755 | Laurel | Landline | Comcast Phone Of Northern Maryland, Inc. - Md | 1/5/2006 |
| 240 | 757 | Hyattsville | Landline | Peerless Network Of Maryland, Llc | 7/22/1999 |
| 240 | 757 | Mount Rainier | Landline | Peerless Network Of Maryland, Llc | 7/22/1999 |
| 240 | 757 | Brentwood | Landline | Peerless Network Of Maryland, Llc | 7/22/1999 |
| 240 | 758 | Laurel | Wireless | New Cingular Wireless Pcs, Llc - Dc | 3/3/2016 |
| 240 | 760 | Takoma Park | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 9/22/2015 |
| 240 | 760 | Hyattsville | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 9/22/2015 |
| 240 | 760 | Mount Rainier | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 9/22/2015 |
| 240 | 762 | Hyattsville | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 8/22/2012 |
| 240 | 762 | Mount Rainier | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 8/22/2012 |
| 240 | 762 | Brentwood | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 8/22/2012 |
| 240 | 763 | Owings | Landline | Bandwidth.com Clec, Llc - Md | 10/1/2015 |
| 240 | 763 | Friendship | Landline | Bandwidth.com Clec, Llc - Md | 10/1/2015 |
| 240 | 763 | Sunderland | Landline | Bandwidth.com Clec, Llc - Md | 10/1/2015 |
| 240 | 764 | Bethesda | Landline | Xo Maryland, Llc | 10/31/2000 |
| 240 | 764 | Chevy Chase | Landline | Xo Maryland, Llc | 10/31/2000 |
| 240 | 765 | Bethesda | Landline | Xo Maryland, Llc | 10/31/2000 |
| 240 | 765 | Chevy Chase | Landline | Xo Maryland, Llc | 10/31/2000 |
| 240 | 766 | Bethesda | Landline | Xo Maryland, Llc | 10/31/2000 |
| 240 | 766 | Chevy Chase | Landline | Xo Maryland, Llc | 10/31/2000 |
| 240 | 767 | Capitol Heights | Landline | Cavalier East Llc - Md | 5/9/2001 |
| 240 | 767 | Suitland | Landline | Cavalier East Llc - Md | 5/9/2001 |
| 240 | 767 | District Heights | Landline | Cavalier East Llc - Md | 5/9/2001 |
| 240 | 770 | Hyattsville | Landline | Comcast Phone Of Northern Maryland, Inc. - Md | 11/22/2004 |
| 240 | 770 | Mount Rainier | Landline | Comcast Phone Of Northern Maryland, Inc. - Md | 11/22/2004 |
| 240 | 770 | Brentwood | Landline | Comcast Phone Of Northern Maryland, Inc. - Md | 11/22/2004 |
| 240 | 771 | Poolesville | Landline | Neutral Tandem-maryland, Llc - Md | 2/18/2016 |
| 240 | 772 | Frederick | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 11/17/2011 |
| 240 | 773 | Rockville | Landline | Verizon Maryland, Inc. | 10/13/1999 |
| 240 | 774 | Lonaconing | Landline | Bandwidth.com Clec, Llc - Md | 10/5/2015 |
| 240 | 775 | Luke | Landline | Bandwidth.com Clec, Llc - Md | 10/5/2015 |
| 240 | 775 | Westernport | Landline | Bandwidth.com Clec, Llc - Md | 10/5/2015 |
| 240 | 776 | La Plata | Landline | Broadwing Communications. Llc - Md | 5/10/1999 |
| 240 | 776 | Bel Alton | Landline | Broadwing Communications. Llc - Md | 5/10/1999 |
| 240 | 776 | Port Tobacco | Landline | Broadwing Communications. Llc - Md | 5/10/1999 |
| 240 | 777 | Rockville | Landline | Verizon Maryland, Inc. | 5/10/1999 |
| 240 | 778 | Bethesda | Landline | Xo Maryland, Llc | 10/31/2000 |
| 240 | 778 | Chevy Chase | Landline | Xo Maryland, Llc | 10/31/2000 |
| 240 | 779 | Sandy Spring | Landline | Cavalier East Llc - Md | 10/31/2000 |
| 240 | 779 | Ashton | Landline | Cavalier East Llc - Md | 10/31/2000 |
| 240 | 779 | Brinklow | Landline | Cavalier East Llc - Md | 10/31/2000 |
| 240 | 780 | Gaithersburg | Landline | Broadwing Communications. Llc - Md | 5/10/1999 |
| 240 | 780 | Montgomery Village | Landline | Broadwing Communications. Llc - Md | 5/10/1999 |
| 240 | 781 | Takoma Park | Landline | Mcimetro Access Transmission Services Llc | 8/18/2015 |
| 240 | 781 | Hyattsville | Landline | Mcimetro Access Transmission Services Llc | 8/18/2015 |
| 240 | 781 | Mount Rainier | Landline | Mcimetro Access Transmission Services Llc | 8/18/2015 |
| 240 | 782 | Clarksburg | Landline | Global Crossing Local Services, Inc.-md | 5/10/1999 |
| 240 | 782 | Damascus | Landline | Global Crossing Local Services, Inc.-md | 5/10/1999 |
| 240 | 782 | Monrovia | Landline | Global Crossing Local Services, Inc.-md | 5/10/1999 |
| 240 | 783 | Bethesda | Wireless | Mte, Inc. Dba Mte Paging Network | 5/10/1999 |
| 240 | 783 | Chevy Chase | Wireless | Mte, Inc. Dba Mte Paging Network | 5/10/1999 |
| 240 | 784 | Myersville | Wireless | Omnipoint Communications Cap Operations, Llc | 6/6/2001 |
| 240 | 786 | Laurel | Landline | Broadwing Communications. Llc - Md | 5/10/1999 |
| 240 | 787 | Brandywine | Landline | Broadwing Communications. Llc - Md | 5/10/1999 |
| 240 | 788 | Hyattsville | Landline | Broadwing Communications. Llc - Md | 5/10/1999 |
| 240 | 788 | Mount Rainier | Landline | Broadwing Communications. Llc - Md | 5/10/1999 |
| 240 | 788 | Brentwood | Landline | Broadwing Communications. Llc - Md | 5/10/1999 |
| 240 | 790 | Hyattsville | Landline | Broadwing Communications. Llc - Md | 5/10/1999 |
| 240 | 790 | Mount Rainier | Landline | Broadwing Communications. Llc - Md | 5/10/1999 |
| 240 | 790 | Brentwood | Landline | Broadwing Communications. Llc - Md | 5/10/1999 |
| 240 | 793 | Gaithersburg | Wireless | Sprint Spectrum L.p. | 3/15/2001 |
| 240 | 793 | Montgomery Village | Wireless | Sprint Spectrum L.p. | 3/15/2001 |
| 240 | 794 | Callaway | Landline | Broadwing Communications. Llc - Md | 5/10/1999 |
| 240 | 794 | Lexington Park | Landline | Broadwing Communications. Llc - Md | 5/10/1999 |
| 240 | 794 | Great Mills | Landline | Broadwing Communications. Llc - Md | 5/10/1999 |
| 240 | 800 | Bethesda | Landline | Core Communications, Inc. - Md | 6/22/2012 |
| 240 | 800 | Chevy Chase | Landline | Core Communications, Inc. - Md | 6/22/2012 |
| 240 | 801 | Gaithersburg | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 10/4/2013 |
| 240 | 801 | Montgomery Village | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 10/4/2013 |
| 240 | 802 | Mount Rainier | Wireless | 365 Wireless, Llc | 5/10/2013 |
| 240 | 802 | Oxon Hill | Wireless | 365 Wireless, Llc | 5/10/2013 |
| 240 | 802 | Brentwood | Wireless | 365 Wireless, Llc | 5/10/2013 |
| 240 | 803 | Cumberland | Wireless | New Cingular Wireless Pcs, Llc - Dc | 1/27/2012 |
| 240 | 804 | Issue | Landline | Xo Maryland, Llc | 4/23/2001 |
| 240 | 804 | Newburg | Landline | Xo Maryland, Llc | 4/23/2001 |
| 240 | 804 | Faulkner | Landline | Xo Maryland, Llc | 4/23/2001 |
| 240 | 805 | Gaithersburg | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 11/17/2015 |
| 240 | 805 | Montgomery Village | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 11/17/2015 |
| 240 | 806 | Indian Head | Landline | Peerless Network Of Maryland, Llc | 9/30/2015 |
| 240 | 808 | Leonardtown | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 3/31/2015 |
| 240 | 810 | Bethesda | Wireless | Omnipoint Communications Cap Operations, Llc | 4/5/2016 |
| 240 | 810 | Glen Echo | Wireless | Omnipoint Communications Cap Operations, Llc | 4/5/2016 |
| 240 | 810 | Cabin John | Wireless | Omnipoint Communications Cap Operations, Llc | 4/5/2016 |
| 240 | 812 | Poolesville | Landline | Global Crossing Local Services, Inc.-md | 5/10/1999 |
| 240 | 813 | Gaithersburg | Landline | Atx Telecommunications Services, Ltd | 6/30/2001 |
| 240 | 813 | Montgomery Village | Landline | Atx Telecommunications Services, Ltd | 6/30/2001 |
| 240 | 815 | Frederick | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 11/17/2015 |
| 240 | 816 | Hagerstown | Landline | Bandwidth.com Clec, Llc - Md | 10/5/2015 |
| 240 | 817 | Sandy Spring | Wireless | Omnipoint Communications Cap Operations, Llc | 1/12/2016 |
| 240 | 817 | Ashton | Wireless | Omnipoint Communications Cap Operations, Llc | 1/12/2016 |
| 240 | 817 | Brinklow | Wireless | Omnipoint Communications Cap Operations, Llc | 1/12/2016 |
| 240 | 818 | Smithsburg | Landline | Verizon Maryland, Inc. | 10/13/1999 |
| 240 | 821 | Silver Spring | Landline | Lightwave Communications, Llc - Md | 5/27/2005 |
| 240 | 823 | Brandywine | Landline | Xo Maryland, Llc | 2/13/2001 |
| 240 | 825 | Hyattsville | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 3/17/2016 |
| 240 | 825 | Mount Rainier | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 3/17/2016 |
| 240 | 825 | Brentwood | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 3/17/2016 |
| 240 | 826 | Rockville | Landline | Verizon Maryland, Inc. | 5/7/2007 |
| 240 | 826 | Derwood | Landline | Verizon Maryland, Inc. | 5/7/2007 |
| 240 | 828 | Hyattsville | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 2/14/2017 |
| 240 | 828 | Mount Rainier | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 2/14/2017 |
| 240 | 828 | Brentwood | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 2/14/2017 |
| 240 | 830 | Capitol Heights | Landline | Comcast Phone Of Northern Maryland, Inc. - Md | 11/10/2015 |
| 240 | 830 | Hyattsville | Landline | Comcast Phone Of Northern Maryland, Inc. - Md | 11/10/2015 |
| 240 | 830 | District Heights | Landline | Comcast Phone Of Northern Maryland, Inc. - Md | 11/10/2015 |
| 240 | 831 | Frederick | Landline | Neutral Tandem-maryland, Llc - Md | 4/26/2016 |
| 240 | 832 | Bethesda | Wireless | Sprint Spectrum L.p. | 5/10/1999 |
| 240 | 832 | Chevy Chase | Wireless | Sprint Spectrum L.p. | 5/10/1999 |
| 240 | 833 | Bethesda | Landline | Xo Maryland, Llc | 10/31/2000 |
| 240 | 833 | Chevy Chase | Landline | Xo Maryland, Llc | 10/31/2000 |
| 240 | 837 | Hughesville | Landline | Xo Maryland, Llc | 2/13/2001 |
| 240 | 838 | Capitol Heights | Wireless | Omnipoint Communications Cap Operations, Llc | 3/12/2001 |
| 240 | 838 | Hyattsville | Wireless | Omnipoint Communications Cap Operations, Llc | 3/12/2001 |
| 240 | 838 | District Heights | Wireless | Omnipoint Communications Cap Operations, Llc | 3/12/2001 |
| 240 | 839 | Bethesda | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 1/13/2007 |
| 240 | 839 | Chevy Chase | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 1/13/2007 |
| 240 | 839 | Mount Rainier | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 1/13/2007 |
| 240 | 841 | Laurel | Landline | Allegiance Telecom, Inc. - Md | 10/31/2000 |
| 240 | 842 | Glenn Dale | Landline | Allegiance Telecom, Inc. - Md | 10/31/2000 |
| 240 | 842 | Lanham | Landline | Allegiance Telecom, Inc. - Md | 10/31/2000 |
| 240 | 842 | Bowie | Landline | Allegiance Telecom, Inc. - Md | 10/31/2000 |
| 240 | 843 | Riverdale | Landline | Allegiance Telecom, Inc. - Md | 10/31/2000 |
| 240 | 843 | College Park | Landline | Allegiance Telecom, Inc. - Md | 10/31/2000 |
| 240 | 843 | Greenbelt | Landline | Allegiance Telecom, Inc. - Md | 10/31/2000 |
| 240 | 844 | Ridge | Landline | Xo Maryland, Llc | 2/13/2001 |
| 240 | 845 | Bethesda | Landline | Xo Maryland, Llc | 10/31/2000 |
| 240 | 845 | Chevy Chase | Landline | Xo Maryland, Llc | 10/31/2000 |
| 240 | 846 | Clinton | Landline | Xo Maryland, Llc | 10/31/2000 |
| 240 | 846 | Cheltenham | Landline | Xo Maryland, Llc | 10/31/2000 |
| 240 | 846 | Andrews Air Force Base | Landline | Xo Maryland, Llc | 10/31/2000 |
| 240 | 847 | Bethesda | Landline | Neutral Tandem-maryland, Llc - Md | 12/9/2015 |
| 240 | 847 | Glen Echo | Landline | Neutral Tandem-maryland, Llc - Md | 12/9/2015 |
| 240 | 847 | Cabin John | Landline | Neutral Tandem-maryland, Llc - Md | 12/9/2015 |
| 240 | 848 | Gaithersburg | Wireless | Sprint Spectrum L.p. | 3/3/2001 |
| 240 | 848 | Montgomery Village | Wireless | Sprint Spectrum L.p. | 3/3/2001 |
| 240 | 850 | Hagerstown | Landline | Peerless Network Of Maryland, Llc | 5/25/2016 |
| 240 | 855 | Bethesda | Wireless | Sprint Spectrum L.p. | 10/9/2006 |
| 240 | 855 | Glen Echo | Wireless | Sprint Spectrum L.p. | 10/9/2006 |
| 240 | 855 | Cabin John | Wireless | Sprint Spectrum L.p. | 10/9/2006 |
| 240 | 856 | Columbia | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 4/11/2016 |
| 240 | 857 | Hyattsville | Landline | Level 3 Telecom Of Maryland, Llc - Md | 5/10/1999 |
| 240 | 857 | Mount Rainier | Landline | Level 3 Telecom Of Maryland, Llc - Md | 5/10/1999 |
| 240 | 857 | Brentwood | Landline | Level 3 Telecom Of Maryland, Llc - Md | 5/10/1999 |
| 240 | 858 | Bethesda | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 7/12/2016 |
| 240 | 858 | Chevy Chase | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 7/12/2016 |
| 240 | 859 | Dayton | Landline | Broadvox-clec, Llc - Md | 7/11/2016 |
| 240 | 859 | Highland | Landline | Broadvox-clec, Llc - Md | 7/11/2016 |
| 240 | 859 | Clarksville | Landline | Broadvox-clec, Llc - Md | 7/11/2016 |
| 240 | 860 | Cumberland | Landline | Peerless Network Of Maryland, Llc | 8/23/2016 |
| 240 | 862 | Mount Savage | Landline | Neutral Tandem-maryland, Llc - Md | 9/2/2016 |
| 240 | 863 | Laurel | Landline | Level 3 Telecom Of Maryland, Llc - Md | 5/10/1999 |
| 240 | 864 | Rockville | Landline | Cavalier East Llc - Md | 5/9/2001 |
| 240 | 864 | Derwood | Landline | Cavalier East Llc - Md | 5/9/2001 |
| 240 | 865 | Halethorpe | Landline | Level 3 Communications, Llc - Md | 3/3/2001 |
| 240 | 865 | Elkridge | Landline | Level 3 Communications, Llc - Md | 3/3/2001 |
| 240 | 865 | Baltimore | Landline | Level 3 Communications, Llc - Md | 3/3/2001 |
| 240 | 867 | Silver Spring | Landline | Commio, Llc | 6/20/2017 |
| 240 | 867 | Takoma Park | Landline | Commio, Llc | 6/20/2017 |
| 240 | 868 | Hyattsville | Landline | Cavalier East Llc - Md | 5/9/2001 |
| 240 | 868 | Mount Rainier | Landline | Cavalier East Llc - Md | 5/9/2001 |
| 240 | 868 | Brentwood | Landline | Cavalier East Llc - Md | 5/9/2001 |
| 240 | 870 | Frederick | Landline | Neutral Tandem-maryland, Llc - Md | 9/2/2016 |
| 240 | 876 | Bethesda | Wireless | Sprint Spectrum L.p. | 11/20/1998 |
| 240 | 876 | Chevy Chase | Wireless | Sprint Spectrum L.p. | 11/20/1998 |
| 240 | 877 | Frederick | Landline | Neutral Tandem-maryland, Llc - Md | 8/25/2016 |
| 240 | 878 | Washington | Unknown | Commio, Llc | 8/3/2017 |
| 240 | 880 | Bethesda | Landline | Broadwing Communications. Llc - Md | 7/22/1999 |
| 240 | 880 | Chevy Chase | Landline | Broadwing Communications. Llc - Md | 7/22/1999 |
| 240 | 882 | Capitol Heights | Wireless | Sprint Spectrum L.p. | 11/20/1998 |
| 240 | 882 | Suitland | Wireless | Sprint Spectrum L.p. | 11/20/1998 |
| 240 | 882 | District Heights | Wireless | Sprint Spectrum L.p. | 11/20/1998 |
| 240 | 883 | Sandy Spring | Landline | Broadwing Communications. Llc - Md | 7/22/1999 |
| 240 | 883 | Ashton | Landline | Broadwing Communications. Llc - Md | 7/22/1999 |
| 240 | 883 | Brinklow | Landline | Broadwing Communications. Llc - Md | 7/22/1999 |
| 240 | 888 | Rockville | Wireless | New Cingular Wireless Pcs, Llc - Dc | 3/3/2001 |
| 240 | 892 | Upper Marlboro | Landline | Broadwing Communications. Llc - Md | 7/22/1999 |
| 240 | 892 | Lothian | Landline | Broadwing Communications. Llc - Md | 7/22/1999 |
| 240 | 893 | Silver Spring | Wireless | New Cingular Wireless Pcs, Llc - Dc | 3/3/2001 |
| 240 | 895 | Patuxent River | Landline | Verizon Maryland, Inc. | 6/30/2001 |
| 240 | 895 | Lexington Park | Landline | Verizon Maryland, Inc. | 6/30/2001 |
| 240 | 895 | Great Mills | Landline | Verizon Maryland, Inc. | 6/30/2001 |
| 240 | 897 | Hyattsville | Landline | Broadwing Communications. Llc - Md | 7/22/1999 |
| 240 | 897 | Mount Rainier | Landline | Broadwing Communications. Llc - Md | 7/22/1999 |
| 240 | 897 | Brentwood | Landline | Broadwing Communications. Llc - Md | 7/22/1999 |
| 240 | 898 | Hyattsville | Landline | Broadwing Communications. Llc - Md | 7/22/1999 |
| 240 | 898 | Mount Rainier | Landline | Broadwing Communications. Llc - Md | 7/22/1999 |
| 240 | 898 | Brentwood | Landline | Broadwing Communications. Llc - Md | 7/22/1999 |
| 240 | 899 | Bethesda | Wireless | Omnipoint Communications Cap Operations, Llc | 3/13/2001 |
| 240 | 899 | Chevy Chase | Wireless | Omnipoint Communications Cap Operations, Llc | 3/13/2001 |
| 240 | 900 | Hyattsville | Landline | Neutral Tandem-maryland, Llc - Md | 2/18/2015 |
| 240 | 900 | Mount Rainier | Landline | Neutral Tandem-maryland, Llc - Md | 2/18/2015 |
| 240 | 900 | Brentwood | Landline | Neutral Tandem-maryland, Llc - Md | 2/18/2015 |
| 240 | 901 | La Plata | Landline | Centurylink Communications Llc | 5/22/2014 |
| 240 | 901 | Bel Alton | Landline | Centurylink Communications Llc | 5/22/2014 |
| 240 | 901 | Port Tobacco | Landline | Centurylink Communications Llc | 5/22/2014 |
| 240 | 903 | Indian Head | Landline | Comcast Phone Of Northern Maryland, Inc. - Md | 12/3/2013 |
| 240 | 904 | Columbia | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 6/23/2016 |
| 240 | 906 | Hyattsville | Wireless | Omnipoint Communications Cap Operations, Llc | 12/31/1969 |
| 240 | 906 | Mount Rainier | Wireless | Omnipoint Communications Cap Operations, Llc | 12/31/1969 |
| 240 | 906 | Brentwood | Wireless | Omnipoint Communications Cap Operations, Llc | 12/31/1969 |
| 240 | 907 | Rockville | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 7/12/2016 |
| 240 | 907 | Derwood | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 7/12/2016 |
| 240 | 908 | Frederick | Landline | Neutral Tandem-maryland, Llc - Md | 9/2/2016 |
| 240 | 912 | Gaithersburg | Landline | Us Lec Of Maryland, Inc. | 1/14/2000 |
| 240 | 912 | Montgomery Village | Landline | Us Lec Of Maryland, Inc. | 1/14/2000 |
| 240 | 913 | Frederick | Landline | Neutral Tandem-maryland, Llc - Md | 9/2/2016 |
| 240 | 915 | Frederick | Landline | Neutral Tandem-maryland, Llc - Md | 9/2/2016 |
| 240 | 917 | Laurel | Wireless | New Cingular Wireless Pcs, Llc - Dc | 11/12/2015 |
| 240 | 918 | Sandy Spring | Wireless | Omnipoint Communications Cap Operations, Llc | 10/20/2016 |
| 240 | 918 | Ashton | Wireless | Omnipoint Communications Cap Operations, Llc | 10/20/2016 |
| 240 | 918 | Brinklow | Wireless | Omnipoint Communications Cap Operations, Llc | 10/20/2016 |
| 240 | 920 | Cumberland | Landline | Level 3 Communications, Llc - Md | 5/3/2001 |
| 240 | 925 | Leonardtown | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 8/9/2001 |
| 240 | 929 | Hyattsville | Landline | Cavalier East Llc - Md | 10/13/1999 |
| 240 | 929 | Mount Rainier | Landline | Cavalier East Llc - Md | 10/13/1999 |
| 240 | 929 | Brentwood | Landline | Cavalier East Llc - Md | 10/13/1999 |
| 240 | 938 | Ashton | Wireless | Omnipoint Communications Cap Operations, Llc | 6/6/2001 |
| 240 | 949 | Hyattsville | Landline | Cavalier East Llc - Md | 5/9/2001 |
| 240 | 949 | Mount Rainier | Landline | Cavalier East Llc - Md | 5/9/2001 |
| 240 | 949 | Brentwood | Landline | Cavalier East Llc - Md | 5/9/2001 |
| 240 | 964 | Cumberland | Landline | Verizon Maryland, Inc. | 5/27/2008 |
| 240 | 965 | Riverdale | Landline | Paetec Communications, Inc. - Md | 10/31/2000 |
| 240 | 965 | College Park | Landline | Paetec Communications, Inc. - Md | 10/31/2000 |
| 240 | 965 | Greenbelt | Landline | Paetec Communications, Inc. - Md | 10/31/2000 |
| 240 | 970 | Silver Spring | Landline | Broadvox-clec, Llc - Md | 6/2/2015 |
| 240 | 970 | Rockville | Landline | Broadvox-clec, Llc - Md | 6/2/2015 |
| 240 | 971 | Frederick | Landline | Centurylink Communications Llc | 8/2/2016 |
| 240 | 972 | Columbia | Landline | Baltimore-washington Telephone (bwt) | 5/26/2015 |
| 240 | 976 | NA | Unknown | Baltimore-washington Telephone (bwt) | 10/17/2005 |
| 240 | 979 | Cumberland | Landline | Level 3 Communications, Llc - Md | 3/3/2001 |
| 240 | 985 | Williamsport | Landline | Centurylink Communications Llc | 10/17/2016 |
| 240 | 986 | Nanjemoy | Landline | Xo Maryland, Llc | 2/13/2001 |
| 240 | 988 | Beltsville | Wireless | Sprint Spectrum L.p. | 5/10/1999 |
| 240 | 988 | Laurel | Wireless | Sprint Spectrum L.p. | 5/10/1999 |
| 240 | 993 | Indian Head | Landline | Xo Maryland, Llc | 2/13/2001 |
| 240 | 994 | Rockville | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 10/13/1999 |
| 240 | 996 | Knoxville | Landline | Centurylink Communications Llc | 10/17/2016 |
| 240 | 996 | Brunswick | Landline | Centurylink Communications Llc | 10/17/2016 |
| 240 | 997 | Silver Spring | Wireless | Cellco Partnership Dba Verizon Wireless - Md | 10/13/1999 |
| 240 | 998 | Hancock | Landline | Centurylink Communications Llc | 10/17/2016 |
See what our customer have to say about Teloz
By obtaining a virtual phone number with a 240 area code forwarded to my cell, my small boutique has established a local feel without costly hardware. Customers light up seeing a 240 number, leading to warm conversations that go beyond transactions. This simple virtual number has made my business part of the local community.
As an independent consultant based in India with clients worldwide, My 240 number gives my Upstate New York clients a local call experience, strengthening our relationships. Similarly, my New York 212 number has allowed me to better serve my Northeast US clients. And for my UK clients, my London 020 number has been crucial for establishing legitimacy. All this without needing physical offices in any of those regions. The local presence conveyed by these numbers has been key for growing my business internationally.
The advanced features like call recording, conferencing, and call handling have streamlined operations. I can now record calls with my team and share for training instead of repeating myself. The call forwarding lets me toggle between office and mobile seamlessly. And the conference calling bridges global team discussions. The capabilities and cost savings have been an absolute game changer compared to traditional telephony. These virtual numbers have opened my eyes to how a small business can efficiently compete on a global scale.
As an international sales rep, the flexibility of virtual phone numbers has been invaluable. I can instantly get local numbers when entering new markets to test demand, then easily cancel them if the market doesn't pan out. This agility to adjust my phone presence when pivoting between countries has saved tons of time and money compared to traditional telephony. The quick deployment and cancellation of virtual numbers has been a game-changer for optimizing my global sales.
Mike S. CorleyCEO 
Frequently Asked Questions
1. Can I port my existing phone number?
Yes, you can easily transfer your existing number to our system without any service interruption.
2. Are international calls included?
We offer competitive rates for international calls, allowing you to stay connected globally at an affordable cost.
3. Is there a long-term contract?
No, we offer month-to-month plans that provide you with the flexibility to adjust your services as needed.
4. What devices can I use with this service?
Our platform is compatible with smartphones, tablets, and computers, ensuring you can stay connected on your preferred device.
5. How quickly can I start using the service after signing up?
You can start calling and texting within minutes after completing the sign-up process.
6. Do you offer customer support?
Yes, we provide 24/7 customer support to assist you with any questions or issues you may encounter.
7. Can I customize my phone menus?
Absolutely! You can create custom greetings and multi-level menus to enhance your callers’ experience.
8. Is the system secure?
Yes, our platform features end-to-end encryption and adheres to the highest security standards to protect your communications.
9. How can I track my call and text activity?
Our platform offers real-time analytics, giving you insights into your communication patterns for better decision-making.
10. Do you support CRM integration?
Yes, our service seamlessly integrates with many popular CRM systems, allowing you to manage customer interactions efficiently.
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Teloz LTD
- +1 914-999-6826
- Contact Us
- www.teloz.com
- Office Address
ROOM 409, BEVERLEY COMMERCIAL, CENTRE, 87-105 CHATHAM ROAD
SOUTH, TSIM SHA TSUI, KOWLOON
HONG KONG
