Who Called Me from Area Code 240?
Quick answerA 240 call usually comes from Waldorf or nearby communities, but caller ID can be spoofed, so a local-looking number isn’t proof. If there’s no voicemail, let it go: legitimate callers leave messages.
- No voicemail? Let it go. Real callers leave messages.
- Recognize the pattern? Check the number in the prefix lookup.
- Getting repeats? ActiveArmor® blocks and labels them automatically.
- Same prefix calling again? Compare it against this month’s most-reported 240 prefixes, right on this page.
- Curious who issued a number? Every 240 prefix belongs to a carrier — the registry names it.
Been targeted?Report the call at reportfraud.ftc.gov — reports feed the complaint data that powers spam blocking, including the board on this page. AT&T customers already have ActiveArmor® screening built in.
Most-reported 240 prefixes this month
PrefixReported patternReport volume
(240) 570-XXXXRobocall-heavy
(240) 934-XXXXRobocall-heavy
(240) 240-XXXXRobocall-heavy
(240) 759-XXXXRobocall-heavy
(240) 649-XXXXRobocall-heavy
261 unwanted-call reports naming 240 numbers in FTC Do Not Call complaint data, July 2–17, 2026. Consumer-reported and unverified.
Block spam calls in the 240, included with AT&T wireless
AT&T ActiveArmor® is the network-level security that screens the calls this page is about:
- Fraud calls blocked automatically on the network
- Suspected spam labeled before you answer
- Caller ID & custom call blocking in the free app
- Reverse number lookup (available with ActiveArmor Advanced security. Fee required.)
- Identity monitoring & identity theft insurance (available with ActiveArmor Advanced security. Fee required.)
Included with AT&T wireless plans. Requires compatible device/service and download of the AT&T ActiveArmor® app. Other terms & restrictions apply. May not detect all threats and may block wanted calls. Some features require Advanced mobile security ($7/mo.). See terms.
See how ActiveArmor worksIncluded with the free 30-day AT&T Wireless℠ trialTry AT&T Wireless℠ free for 30 daysDownload the AT&T app, activate a trial eSIM in minutes, and run our network side by side with your current service. No credit card, keep your number.
- 100GB of data plus 25GB hotspot
- Unlimited talk & text in the U.S., Canada and Mexico
- Texting from the U.S. to 200+ countries & territories
- Access to the AT&T 5G network
Offer details
Service good for 30 days. Data: Limited to 100GB of data and 25GB of hotspot data. No additional data is available after limit is reached. Video is limited to SD quality. Talk & Text: Includes unlimited talk & text within the U.S. and unlimited text from the U.S. to over 230 countries. Limits: One trial per user. An unlocked, dual eSIM iPhone is required. You’ll receive a trial phone number that belongs to AT&T and is not available to be ported to another carrier or otherwise retained. Trial plan features and details may differ from or be unavailable in other AT&T plans. U.S. only. All terms subject to change at any time.
Is Area Code 240 a Scam?
No. 240 is a legitimate Waldorf area code.
It’s added to the 301 region in 1997 and serves Waldorf and surrounding communities. But legitimacy of the code says nothing about any single call. Scammers spoof local numbers constantly.
The code is realAdded to the 301 region in 1997; 785 assigned carrier prefixes serve it today.
Spoofing happens“Neighbor spoofing” fakes local numbers. No voicemail? Let it go.
Screening includedActiveArmor® labels and blocks suspected spam. Included with AT&T wireless plans.
Been targeted? Report it to the FTC at reportfraud.ftc.gov. Reports feed the complaint data that powers spam blocking.
Scam texts from area code 240 numbers
The most common area code 240 text scam is the “wrong number” opener: a friendly message that pretends to know you, then moves the chat to WhatsApp and eventually to an investment pitch. Scripts currently circulating:
- “U at home?” · “Are you busy tomorrow?” · “How are you doing?”
- Delivery-problem and job-offer texts that link out to a login page
Don’t reply. A response marks your number as live. Forward scam texts to 7726 (SPAM), and AT&T ActiveArmor® filters known senders automatically.
How number spoofing works in area code 240
Caller ID is easy to forge. Spoofing fakes the number a call displays. The real owner of that 240 number isn’t involved and usually has no idea. That’s why blocking one number rarely stops the calls.
- A call from a number almost identical to yours (same 240 and prefix) is “mirror spoofing.” A missed call from your own number is never worth returning.
- Strangers calling you back saying you called them? Your 240 number is being spoofed. It typically passes within days, and you don’t need a new number. Report it at reportfraud.ftc.gov.
- The caller-ID checkmark: AT&T verifies network calls (STIR/SHAKEN). A verified mark means the displayed number wasn’t faked. No mark doesn’t always mean scam, but treat it with more caution.
Spoofed or not, the rule holds: unexpected caller, no voicemail? Let it go.
240 Area Code Prefix & Carrier Lookup
The three digits after the area code identify the carrier a number was issued to. All 785 assigned 240 prefixes below are real, from the public numbering registry. Type to filter.
This isn’t a reverse phone lookup: no legitimate free service can tell you who owns a specific number. What a 240 prefix does show: the carrier that issued it, whether it’s wireless, landline or VoIP, and the community it belongs to, which is often enough to judge whether a call was worth returning.
785 prefixes · updated monthly
| Prefix | Carrier | Line type |
|---|---|---|
| 240-200 | Bandwidth.com | VoIP |
| 240-201 | Peerless Network | VoIP |
| 240-202 | Onvoy (Sinch) | VoIP |
| 240-203 | T-Mobile (Omnipoint) | Landline |
| 240-204 | Verizon Wireless | Wireless |
| 240-205 | AT&T Mobility | Wireless |
| 240-206 | Verizon Business (MCImetro) | Landline |
| 240-207 | Windstream (Paetec) | Landline |
| 240-208 | Peerless Network | VoIP |
| 240-209 | Peerless Network | VoIP |
| 240-210 | AT&T Mobility | Wireless |
| 240-212 | Core Communications | Landline |
| 240-213 | Peerless Network | VoIP |
| 240-214 | Peerless Network | VoIP |
| 240-215 | Lumen (Level 3) | VoIP |
| 240-216 | Metro by T-Mobile (MetroPCS) | Wireless |
| 240-217 | T-Mobile (Omnipoint) | Landline |
| 240-218 | Peerless Network | VoIP |
| 240-219 | Peerless Network | VoIP |
| 240-220 | Peerless Network | VoIP |
| 240-221 | Verizon Maryland | Landline |
| 240-222 | Windstream (Paetec) | Landline |
| 240-223 | Verizon Business (MCImetro) | Landline |
| 240-224 | Verizon Wireless | Wireless |
| 240-225 | Core Communications | Landline |
| 240-226 | Onvoy (Sinch) | VoIP |
| 240-227 | AT&T Mobility | Wireless |
| 240-228 | Verizon Maryland | Landline |
| 240-229 | Lumen (Level 3) | VoIP |
| 240-230 | Lumen (Level 3) | VoIP |
| 240-231 | Core Communications | Landline |
| 240-232 | Lumen (Level 3) | VoIP |
| 240-233 | AT&T (Teleport Communications) | Landline |
| 240-234 | Verizon Wireless | Wireless |
| 240-235 | Windstream (Paetec) | Landline |
| 240-236 | Verizon Maryland | Landline |
| 240-237 | AT&T (Teleport Communications) | Landline |
| 240-238 | Windstream (Paetec) | Landline |
| 240-239 | Core Communications | Landline |
| 240-240 | FracTEL | Landline |
| 240-241 | Starpower Communications | Landline |
| 240-242 | Starpower Communications | Landline |
| 240-243 | Verizon Business (MCImetro) | Landline |
| 240-244 | Starpower Communications | Landline |
| 240-245 | Starpower Communications | Landline |
| 240-246 | Starpower Communications | Landline |
| 240-247 | Verizon Business (MCImetro) | Landline |
| 240-248 | Peerless Network | VoIP |
| 240-249 | AT&T (Teleport Communications) | Landline |
| 240-250 | Peerless Network | VoIP |
| 240-251 | Core Communications | Landline |
| 240-252 | Lumen (Level 3) | VoIP |
| 240-253 | Bandwidth.com | VoIP |
| 240-254 | AT&T (Teleport Communications) | Landline |
| 240-255 | Peerless Network | VoIP |
| 240-256 | AT&T (Teleport Communications) | Landline |
| 240-257 | AT&T (Teleport Communications) | Landline |
| 240-258 | AT&T (Teleport Communications) | Landline |
| 240-259 | Onvoy Spectrum (Sinch) | VoIP |
| 240-260 | Verizon Business (MCImetro) | Landline |
| 240-261 | Onvoy (Sinch) | VoIP |
| 240-262 | Comcast (Xfinity Voice) | VoIP |
| 240-263 | AT&T Mobility | Wireless |
| 240-264 | Verizon Maryland | Landline |
| 240-265 | T-Mobile (Omnipoint) | Landline |
| 240-266 | Peerless Network | VoIP |
| 240-267 | Verizon Wireless | Wireless |
| 240-268 | Verizon Business (MCImetro) | Landline |
| 240-269 | Peerless Network | VoIP |
| 240-270 | Verizon Wireless | Wireless |
| 240-271 | AT&T Mobility | Wireless |
| 240-272 | T-Mobile (Omnipoint) | Landline |
| 240-273 | Lumen (Level 3) | VoIP |
| 240-274 | AT&T Mobility | Wireless |
| 240-275 | Core Communications | Landline |
| 240-276 | Verizon Maryland | Landline |
| 240-277 | T-Mobile (Omnipoint) | Landline |
| 240-278 | Verizon Wireless | Wireless |
| 240-279 | Core Communications | Landline |
| 240-280 | Comcast (Xfinity Voice) | VoIP |
| 240-281 | AT&T Mobility | Wireless |
| 240-282 | Peerless Network | VoIP |
| 240-283 | Windstream (Paetec) | Landline |
| 240-284 | Lumen (Level 3) | VoIP |
| 240-285 | Verizon Wireless | Wireless |
| 240-286 | T-Mobile (Omnipoint) | Landline |
| 240-287 | Core Communications | Landline |
| 240-288 | Comcast (Xfinity Voice) | VoIP |
| 240-289 | Windstream (Paetec) | Landline |
| 240-290 | Verizon Business (MCImetro) | Landline |
| 240-291 | AT&T Mobility | Wireless |
| 240-292 | Verizon Maryland | Landline |
| 240-293 | Starpower Communications | Landline |
| 240-294 | Verizon Business (MCImetro) | Landline |
| 240-295 | Windstream (Paetec) | Landline |
| 240-296 | Windstream (Paetec) | Landline |
| 240-297 | Lumen (Level 3) | VoIP |
| 240-298 | Verizon Wireless | Wireless |
| 240-299 | Metro by T-Mobile (MetroPCS) | Wireless |
| 240-300 | Verizon Wireless | Wireless |
| 240-301 | Onvoy (Sinch) | VoIP |
| 240-302 | AT&T Mobility | Wireless |
| 240-303 | Windstream (Paetec) | Landline |
| 240-304 | T-Mobile (Omnipoint) | Landline |
| 240-305 | T-Mobile (Omnipoint) | Landline |
| 240-306 | Verizon Business (MCImetro) | Landline |
| 240-307 | Bandwidth.com | VoIP |
| 240-308 | AT&T Mobility | Wireless |
| 240-309 | Verizon Wireless | Wireless |
| 240-310 | Uscoc Of Cumberland, Inc. dba United States Cel Md | Landline |
| 240-312 | Windstream (Paetec) | Landline |
| 240-313 | Verizon Maryland | Landline |
| 240-314 | Verizon Maryland | Landline |
| 240-315 | Verizon Maryland | Landline |
| 240-316 | T-Mobile (Omnipoint) | Landline |
| 240-317 | Starpower Communications | Landline |
| 240-318 | Verizon Maryland | Landline |
| 240-319 | Verizon Wireless | Wireless |
| 240-320 | Windstream (Paetec) | Landline |
| 240-321 | Uscoc Of Cumberland, Inc. dba United States Cel Md | Landline |
| 240-322 | Core Communications | Landline |
| 240-323 | Core Communications | Landline |
| 240-324 | Ymax Communications | Landline |
| 240-325 | Core Communications | Landline |
| 240-326 | Windstream (Paetec) | Landline |
| 240-327 | Core Communications | Landline |
| 240-328 | Verizon Maryland | Landline |
| 240-329 | Lumen (Level 3) | VoIP |
| 240-330 | T-Mobile (Omnipoint) | Landline |
| 240-331 | Peerless Network | VoIP |
| 240-332 | Peerless Network | VoIP |
| 240-333 | Windstream (Paetec) | Landline |
| 240-334 | Lumen (Level 3) | VoIP |
| 240-335 | Windstream (Paetec) | Landline |
| 240-336 | Core Communications | Landline |
| 240-337 | Onvoy (Sinch) | VoIP |
| 240-338 | Verizon Wireless | Wireless |
| 240-339 | Windstream (Paetec) | Landline |
| 240-340 | T-Mobile (Omnipoint) | Landline |
| 240-341 | Verizon Business (MCImetro) | Landline |
| 240-342 | Starpower Communications | Landline |
| 240-343 | Verizon Wireless | Wireless |
| 240-344 | AT&T Mobility | Wireless |
| 240-345 | Lumen (Level 3) | VoIP |
| 240-346 | Metro by T-Mobile (MetroPCS) | Wireless |
| 240-347 | Bandwidth.com | VoIP |
| 240-348 | Lumen (Level 3) | VoIP |
| 240-349 | Onvoy (Sinch) | VoIP |
| 240-350 | T-Mobile (Omnipoint) | Landline |
| 240-351 | T-Mobile (Omnipoint) | Landline |
| 240-352 | Peerless Network | VoIP |
| 240-353 | T-Mobile (Omnipoint) | Landline |
| 240-354 | T-Mobile (Omnipoint) | Landline |
| 240-355 | T-Mobile (Omnipoint) | Landline |
| 240-356 | Lumen (Level 3) | VoIP |
| 240-357 | Verizon Wireless | Wireless |
| 240-358 | Peerless Network | VoIP |
| 240-359 | Peerless Network | VoIP |
| 240-360 | T-Mobile (Omnipoint) | Landline |
| 240-361 | Windstream (Paetec) | Landline |
| 240-362 | Verizon Maryland | Landline |
| 240-363 | Onvoy (Sinch) | VoIP |
| 240-364 | Windstream (Paetec) | Landline |
| 240-365 | Baltimore-Washington Telephone | Landline |
| 240-366 | Bandwidth.com | VoIP |
| 240-367 | T-Mobile (Omnipoint) | Landline |
| 240-368 | Peerless Network | VoIP |
| 240-369 | Core Communications | Landline |
| 240-370 | T-Mobile (Omnipoint) | Landline |
| 240-371 | Peerless Network | VoIP |
| 240-372 | Metro by T-Mobile (MetroPCS) | Wireless |
| 240-373 | Verizon Maryland | Landline |
| 240-374 | Lumen (Level 3) | VoIP |
| 240-375 | T-Mobile (Omnipoint) | Landline |
| 240-376 | Peerless Network | VoIP |
| 240-377 | Lumen (Level 3) | VoIP |
| 240-378 | Core Communications | Landline |
| 240-379 | Verizon Maryland | Landline |
| 240-380 | Verizon Wireless | Wireless |
| 240-381 | AT&T Mobility | Wireless |
| 240-382 | AT&T (Teleport Communications) | Landline |
| 240-383 | AT&T Mobility | Wireless |
| 240-384 | Peerless Network | VoIP |
| 240-385 | Verizon Maryland | Landline |
| 240-386 | Verizon Maryland | Landline |
| 240-387 | Windstream (Paetec) | Landline |
| 240-388 | Metro by T-Mobile (MetroPCS) | Wireless |
| 240-389 | Windstream (Paetec) | Landline |
| 240-390 | Windstream (Paetec) | Landline |
| 240-391 | Onvoy (Sinch) | VoIP |
| 240-392 | Starpower Communications | Landline |
| 240-393 | Verizon Wireless | Wireless |
| 240-394 | AT&T Mobility | Wireless |
| 240-395 | Windstream (Paetec) | Landline |
| 240-396 | Lumen (Level 3) | VoIP |
| 240-397 | Verizon Wireless | Wireless |
| 240-398 | T-Mobile (Omnipoint) | Landline |
| 240-399 | Verizon Business (MCImetro) | Landline |
| 240-400 | T-Mobile (Omnipoint) | Landline |
| 240-401 | AT&T Mobility | Wireless |
| 240-402 | Verizon Business (MCImetro) | Landline |
| 240-403 | Windstream (Paetec) | Landline |
| 240-404 | Verizon Business (MCImetro) | Landline |
| 240-405 | Windstream (Paetec) | Landline |
| 240-406 | AT&T Mobility | Wireless |
| 240-407 | Lumen (Level 3) | VoIP |
| 240-408 | AT&T Mobility | Wireless |
| 240-409 | AT&T Mobility | Wireless |
| 240-410 | T-Mobile (Omnipoint) | Landline |
| 240-412 | Metro by T-Mobile (MetroPCS) | Wireless |
| 240-413 | T-Mobile (Omnipoint) | Landline |
| 240-414 | Peerless Network | VoIP |
| 240-415 | Ymax Communications | Landline |
| 240-416 | AT&T Mobility | Wireless |
| 240-417 | Metro by T-Mobile (MetroPCS) | Wireless |
| 240-418 | T-Mobile (Omnipoint) | Landline |
| 240-419 | Verizon Wireless | Wireless |
| 240-420 | Verizon Maryland | Landline |
| 240-421 | T-Mobile (Omnipoint) | Landline |
| 240-422 | T-Mobile (Omnipoint) | Landline |
| 240-423 | T-Mobile (Omnipoint) | Landline |
| 240-424 | T-Mobile (Omnipoint) | Landline |
| 240-425 | T-Mobile (Omnipoint) | Landline |
| 240-426 | T-Mobile (Omnipoint) | Landline |
| 240-427 | Verizon Business (MCImetro) | Landline |
| 240-428 | Bandwidth.com | VoIP |
| 240-429 | Verizon Wireless | Wireless |
| 240-430 | Windstream (Paetec) | Landline |
| 240-431 | T-Mobile (Omnipoint) | Landline |
| 240-432 | T-Mobile (Omnipoint) | Landline |
| 240-433 | Windstream (Paetec) | Landline |
| 240-434 | Lumen (Level 3) | VoIP |
| 240-435 | Verizon Wireless | Wireless |
| 240-436 | Lumen (Level 3) | VoIP |
| 240-437 | Verizon Business (MCImetro) | Landline |
| 240-438 | T-Mobile (Omnipoint) | Landline |
| 240-439 | Verizon Wireless | Wireless |
| 240-440 | AT&T Mobility | Wireless |
| 240-441 | T-Mobile (Omnipoint) | Landline |
| 240-442 | Verizon Maryland | Landline |
| 240-443 | Onvoy (Sinch) | VoIP |
| 240-444 | Verizon Wireless | Wireless |
| 240-445 | Onvoy (Sinch) | VoIP |
| 240-446 | Verizon Wireless | Wireless |
| 240-447 | AT&T Mobility | Wireless |
| 240-448 | Onvoy (Sinch) | VoIP |
| 240-449 | AT&T Mobility | Wireless |
| 240-450 | Windstream (Paetec) | Landline |
| 240-451 | Onvoy (Sinch) | VoIP |
| 240-452 | Metro by T-Mobile (MetroPCS) | Wireless |
| 240-453 | Verizon Maryland | Landline |
| 240-454 | Windstream (Paetec) | Landline |
| 240-455 | Windstream (Paetec) | Landline |
| 240-456 | Verizon Maryland | Landline |
| 240-457 | Verizon Wireless | Wireless |
| 240-458 | Verizon Wireless | Wireless |
| 240-459 | Verizon Wireless | Wireless |
| 240-460 | AT&T Mobility | Wireless |
| 240-461 | AT&T Mobility | Wireless |
| 240-462 | T-Mobile (Omnipoint) | Landline |
| 240-463 | AT&T Mobility | Wireless |
| 240-464 | T-Mobile (Omnipoint) | Landline |
| 240-465 | Peerless Network | VoIP |
| 240-466 | AT&T Mobility | Wireless |
| 240-467 | Comcast (Xfinity Voice) | VoIP |
| 240-468 | T-Mobile (Omnipoint) | Landline |
| 240-469 | T-Mobile (Omnipoint) | Landline |
| 240-470 | Verizon Wireless | Wireless |
| 240-471 | Onvoy (Sinch) | VoIP |
| 240-472 | AT&T Mobility | Wireless |
| 240-473 | Windstream (Paetec) | Landline |
| 240-474 | Baltimore-Washington Telephone | Landline |
| 240-475 | AT&T Mobility | Wireless |
| 240-476 | T-Mobile (Omnipoint) | Landline |
| 240-477 | Windstream (Paetec) | Landline |
| 240-478 | AT&T Mobility | Wireless |
| 240-479 | Verizon Wireless | Wireless |
| 240-480 | T-Mobile (Omnipoint) | Landline |
| 240-481 | T-Mobile (Omnipoint) | Landline |
| 240-482 | Windstream (Paetec) | Landline |
| 240-483 | Comcast (Xfinity Voice) | VoIP |
| 240-484 | AT&T Mobility | Wireless |
| 240-485 | Windstream (Paetec) | Landline |
| 240-486 | T-Mobile (Omnipoint) | Landline |
| 240-487 | Windstream (Paetec) | Landline |
| 240-488 | Shentel Communications, LLC. | Landline |
| 240-489 | Verizon Business (MCImetro) | Landline |
| 240-490 | T-Mobile (Omnipoint) | Landline |
| 240-491 | Lumen (Level 3) | VoIP |
| 240-492 | Windstream (Paetec) | Landline |
| 240-493 | Windstream (Paetec) | Landline |
| 240-494 | Windstream (Paetec) | Landline |
| 240-495 | Verizon Wireless | Wireless |
| 240-496 | Verizon Wireless | Wireless |
| 240-497 | Verizon Maryland | Landline |
| 240-498 | T-Mobile (Omnipoint) | Landline |
| 240-499 | Windstream (Paetec) | Landline |
| 240-500 | Windstream (Paetec) | Landline |
| 240-501 | T-Mobile (Omnipoint) | Landline |
| 240-502 | Bandwidth.com | VoIP |
| 240-503 | Peerless Network | VoIP |
| 240-504 | T-Mobile (Omnipoint) | Landline |
| 240-505 | T-Mobile (Omnipoint) | Landline |
| 240-506 | AT&T Mobility | Wireless |
| 240-507 | Verizon Wireless | Wireless |
| 240-508 | Metro by T-Mobile (MetroPCS) | Wireless |
| 240-509 | Bandwidth.com | VoIP |
| 240-510 | Verizon Business (MCImetro) | Landline |
| 240-512 | Core Communications | Landline |
| 240-513 | T-Mobile (Omnipoint) | Landline |
| 240-514 | Windstream (Paetec) | Landline |
| 240-515 | AT&T Mobility | Wireless |
| 240-516 | Windstream (Paetec) | Landline |
| 240-517 | Verizon Wireless | Wireless |
| 240-518 | Nuso | Landline |
| 240-519 | AT&T Mobility | Wireless |
| 240-520 | T-Mobile (Omnipoint) | Landline |
| 240-521 | AT&T Mobility | Wireless |
| 240-522 | Metro by T-Mobile (MetroPCS) | Wireless |
| 240-523 | Verizon Business (MCImetro) | Landline |
| 240-524 | Peerless Network | VoIP |
| 240-525 | Peerless Network | VoIP |
| 240-526 | Peerless Network | VoIP |
| 240-527 | Verizon Maryland | Landline |
| 240-528 | Lumen (Level 3) | VoIP |
| 240-529 | Verizon Maryland | Landline |
| 240-530 | Core Communications | Landline |
| 240-531 | Telnyx | Landline |
| 240-532 | Verizon Wireless | Wireless |
| 240-533 | AT&T (Teleport Communications) | Landline |
| 240-534 | Verizon Wireless | Wireless |
| 240-535 | AT&T Mobility | Wireless |
| 240-536 | Peerless Network | VoIP |
| 240-537 | Atlantech Online | Landline |
| 240-538 | Verizon Business (MCImetro) | Landline |
| 240-539 | Peerless Network | VoIP |
| 240-540 | The Voice Application Network | Landline |
| 240-541 | AT&T Mobility | Wireless |
| 240-542 | Windstream (Paetec) | Landline |
| 240-543 | T-Mobile (Omnipoint) | Landline |
| 240-544 | Windstream (Paetec) | Landline |
| 240-545 | Windstream (Paetec) | Landline |
| 240-546 | Windstream (Paetec) | Landline |
| 240-547 | Lumen (Level 3) | VoIP |
| 240-548 | Core Communications | Landline |
| 240-549 | Verizon Wireless | Wireless |
| 240-550 | AT&T Mobility | Wireless |
| 240-551 | AT&T Mobility | Wireless |
| 240-552 | AT&T Mobility | Wireless |
| 240-553 | Verizon Business (MCImetro) | Landline |
| 240-554 | Verizon Business (MCImetro) | Landline |
| 240-556 | Windstream (Paetec) | Landline |
| 240-557 | T-Mobile (Omnipoint) | Landline |
| 240-558 | Windstream (Paetec) | Landline |
| 240-559 | Verizon Business (MCImetro) | Landline |
| 240-560 | Verizon Business (MCImetro) | Landline |
| 240-561 | Verizon Wireless | Wireless |
| 240-562 | Verizon Business (MCImetro) | Landline |
| 240-563 | Onvoy (Sinch) | VoIP |
| 240-564 | T-Mobile (Omnipoint) | Landline |
| 240-565 | T-Mobile (Omnipoint) | Landline |
| 240-566 | Verizon Maryland | Landline |
| 240-567 | Verizon Maryland | Landline |
| 240-568 | Verizon Maryland | Landline |
| 240-569 | Bandwidth.com | VoIP |
| 240-570 | Onvoy (Sinch) | VoIP |
| 240-571 | Verizon Wireless | Wireless |
| 240-572 | Verizon Wireless | Wireless |
| 240-573 | Lumen (Level 3) | VoIP |
| 240-574 | AT&T Mobility | Wireless |
| 240-575 | Lumen (Level 3) | VoIP |
| 240-576 | Vonage | VoIP |
| 240-577 | Verizon Wireless | Wireless |
| 240-578 | Verizon Wireless | Wireless |
| 240-579 | T-Mobile (Omnipoint) | Landline |
| 240-580 | T-Mobile (Omnipoint) | Landline |
| 240-581 | Windstream (Paetec) | Landline |
| 240-582 | Verizon Maryland | Landline |
| 240-583 | Verizon Maryland | Landline |
| 240-584 | T-Mobile (Omnipoint) | Landline |
| 240-585 | Verizon Wireless | Wireless |
| 240-586 | Verizon Maryland | Landline |
| 240-587 | Verizon Wireless | Wireless |
| 240-588 | Verizon Business (MCImetro) | Landline |
| 240-589 | AT&T Mobility | Wireless |
| 240-590 | Metro by T-Mobile (MetroPCS) | Wireless |
| 240-591 | Shentel Communications, LLC. | Landline |
| 240-592 | Verizon Maryland | Landline |
| 240-593 | T-Mobile (Omnipoint) | Landline |
| 240-594 | Bandwidth.com | VoIP |
| 240-595 | Verizon Wireless | Wireless |
| 240-596 | Core Communications | Landline |
| 240-597 | Peerless Network | VoIP |
| 240-598 | Core Communications | Landline |
| 240-599 | Lumen (Level 3) | VoIP |
| 240-600 | T-Mobile (Omnipoint) | Landline |
| 240-601 | T-Mobile (Omnipoint) | Landline |
| 240-602 | T-Mobile (Omnipoint) | Landline |
| 240-603 | T-Mobile (Omnipoint) | Landline |
| 240-604 | T-Mobile (Omnipoint) | Landline |
| 240-605 | T-Mobile (Omnipoint) | Landline |
| 240-606 | T-Mobile (Omnipoint) | Landline |
| 240-607 | Lumen (Level 3) | VoIP |
| 240-608 | Nuso | Landline |
| 240-609 | AT&T Mobility | Wireless |
| 240-610 | Core Communications | Landline |
| 240-612 | Lumen (Level 3) | VoIP |
| 240-613 | Windstream (Paetec) | Landline |
| 240-614 | Metro by T-Mobile (MetroPCS) | Wireless |
| 240-615 | Metro by T-Mobile (MetroPCS) | Wireless |
| 240-616 | Verizon Business (MCImetro) | Landline |
| 240-617 | Bandwidth.com | VoIP |
| 240-618 | Verizon Wireless | Wireless |
| 240-619 | Comcast (Xfinity Voice) | VoIP |
| 240-620 | Verizon Business (MCImetro) | Landline |
| 240-621 | Bandwidth.com | VoIP |
| 240-622 | Core Communications | Landline |
| 240-623 | Bandwidth.com | VoIP |
| 240-624 | Verizon Maryland | Landline |
| 240-625 | Metro by T-Mobile (MetroPCS) | Wireless |
| 240-626 | T-Mobile (Omnipoint) | Landline |
| 240-627 | Lumen (Level 3) | VoIP |
| 240-628 | Core Communications | Landline |
| 240-629 | Verizon Maryland | Landline |
| 240-630 | Bandwidth.com | VoIP |
| 240-631 | Verizon Maryland | Landline |
| 240-632 | Verizon Maryland | Landline |
| 240-633 | Baltimore-Washington Telephone | Landline |
| 240-634 | Core Communications | Landline |
| 240-635 | Core Communications | Landline |
| 240-636 | T-Mobile (Omnipoint) | Landline |
| 240-637 | Core Communications | Landline |
| 240-638 | Lumen (Level 3) | VoIP |
| 240-639 | Core Communications | Landline |
| 240-640 | AT&T Mobility | Wireless |
| 240-641 | Peerless Network | VoIP |
| 240-642 | Advanced Telecom Solutions | Landline |
| 240-643 | T-Mobile (Omnipoint) | Landline |
| 240-644 | Verizon Business (MCImetro) | Landline |
| 240-645 | Verizon Business (MCImetro) | Landline |
| 240-646 | Windstream (Paetec) | Landline |
| 240-647 | Core Communications | Landline |
| 240-648 | Core Communications | Landline |
| 240-649 | Core Communications | Landline |
| 240-650 | Onvoy (Sinch) | VoIP |
| 240-651 | Verizon Wireless | Wireless |
| 240-652 | Verizon Business (MCImetro) | Landline |
| 240-653 | Peerless Network | VoIP |
| 240-654 | AT&T Mobility | Wireless |
| 240-655 | Onvoy (Sinch) | VoIP |
| 240-656 | AT&T Mobility | Wireless |
| 240-657 | Verizon Business (MCImetro) | Landline |
| 240-658 | Vonage | VoIP |
| 240-659 | T-Mobile (Omnipoint) | Landline |
| 240-660 | Verizon Wireless | Wireless |
| 240-661 | Baltimore-Washington Telephone | Landline |
| 240-662 | Verizon Maryland | Landline |
| 240-663 | T-Mobile (Omnipoint) | Landline |
| 240-664 | Peerless Network | VoIP |
| 240-665 | T-Mobile (Omnipoint) | Landline |
| 240-666 | Onvoy (Sinch) | VoIP |
| 240-667 | Lumen (Level 3) | VoIP |
| 240-668 | Starpower Communications | Landline |
| 240-669 | Comcast (Xfinity Voice) | VoIP |
| 240-670 | Bandwidth.com | VoIP |
| 240-671 | T-Mobile (Omnipoint) | Landline |
| 240-672 | Verizon Wireless | Wireless |
| 240-673 | Bandwidth.com | VoIP |
| 240-674 | Metro by T-Mobile (MetroPCS) | Wireless |
| 240-675 | AT&T Mobility | Wireless |
| 240-676 | Verizon Wireless | Wireless |
| 240-677 | Verizon Business (MCImetro) | Landline |
| 240-678 | Verizon Wireless | Wireless |
| 240-679 | Core Communications | Landline |
| 240-680 | Peerless Network | VoIP |
| 240-681 | Windstream (Paetec) | Landline |
| 240-682 | Starpower Communications | Landline |
| 240-683 | Verizon Maryland | Landline |
| 240-684 | Verizon Maryland | Landline |
| 240-685 | Lumen (Level 3) | VoIP |
| 240-686 | Verizon Maryland | Landline |
| 240-687 | Verizon Wireless | Wireless |
| 240-688 | Verizon Wireless | Wireless |
| 240-689 | Csc Wireless | Wireless |
| 240-690 | AT&T (Teleport Communications) | Landline |
| 240-691 | Lumen (Level 3) | VoIP |
| 240-692 | Lumen (Level 3) | VoIP |
| 240-693 | Peerless Network | VoIP |
| 240-694 | Verizon Maryland | Landline |
| 240-695 | Verizon Maryland | Landline |
| 240-696 | Lumen (Level 3) | VoIP |
| 240-697 | Coretel Maryland | Landline |
| 240-698 | T-Mobile (Omnipoint) | Landline |
| 240-699 | Verizon Maryland | Landline |
| 240-701 | AT&T Mobility | Wireless |
| 240-702 | Verizon Wireless | Wireless |
| 240-703 | T-Mobile (Omnipoint) | Landline |
| 240-704 | AT&T Mobility | Wireless |
| 240-705 | AT&T Mobility | Wireless |
| 240-706 | AT&T Mobility | Wireless |
| 240-707 | AT&T Mobility | Wireless |
| 240-708 | Lumen (Level 3) | VoIP |
| 240-709 | T-Mobile (Omnipoint) | Landline |
| 240-710 | Verizon Business (MCImetro) | Landline |
| 240-712 | Verizon Wireless | Wireless |
| 240-713 | Peerless Network | VoIP |
| 240-714 | T-Mobile (Omnipoint) | Landline |
| 240-715 | Lumen (Level 3) | VoIP |
| 240-716 | T-Mobile (Omnipoint) | Landline |
| 240-717 | Onvoy Spectrum (Sinch) | VoIP |
| 240-718 | Verizon Business (MCImetro) | Landline |
| 240-719 | Verizon Wireless | Wireless |
| 240-720 | Lumen (Level 3) | VoIP |
| 240-721 | Verizon Maryland | Landline |
| 240-722 | T-Mobile (Omnipoint) | Landline |
| 240-723 | Verizon Wireless | Wireless |
| 240-724 | Windstream (Paetec) | Landline |
| 240-725 | Verizon Maryland | Landline |
| 240-726 | Nuso | Landline |
| 240-727 | AT&T Mobility | Wireless |
| 240-728 | Vonage | VoIP |
| 240-729 | T-Mobile (Omnipoint) | Landline |
| 240-730 | Hd Carrier | Landline |
| 240-731 | AT&T Mobility | Wireless |
| 240-732 | AT&T Mobility | Wireless |
| 240-733 | FracTEL | Landline |
| 240-734 | Bandwidth.com | VoIP |
| 240-735 | Nuso | Landline |
| 240-736 | AT&T Mobility | Wireless |
| 240-737 | Windstream (Paetec) | Landline |
| 240-738 | Verizon Wireless | Wireless |
| 240-739 | Ip Horizon | Landline |
| 240-740 | Atlantech Online | Landline |
| 240-741 | Airespring | Landline |
| 240-742 | Nuso | Landline |
| 240-743 | Verizon Wireless | Wireless |
| 240-744 | Lumen (Level 3) | VoIP |
| 240-745 | Verizon Business (MCImetro) | Landline |
| 240-746 | AT&T Local | Landline |
| 240-747 | Windstream (Paetec) | Landline |
| 240-748 | AT&T (Teleport Communications) | Landline |
| 240-749 | Verizon Wireless | Wireless |
| 240-750 | AT&T Mobility | Wireless |
| 240-751 | Lumen (Level 3) | VoIP |
| 240-752 | Lumen (Level 3) | VoIP |
| 240-753 | Lumen (Level 3) | VoIP |
| 240-754 | Lumen (Level 3) | VoIP |
| 240-755 | Comcast (Xfinity Voice) | VoIP |
| 240-756 | T-Mobile (Omnipoint) | Landline |
| 240-757 | Peerless Network | VoIP |
| 240-758 | AT&T Mobility | Wireless |
| 240-759 | Onvoy (Sinch) | VoIP |
| 240-760 | Verizon Wireless | Wireless |
| 240-761 | AT&T Mobility | Wireless |
| 240-762 | Verizon Wireless | Wireless |
| 240-763 | Bandwidth.com | VoIP |
| 240-764 | Verizon Business (MCImetro) | Landline |
| 240-765 | Verizon Business (MCImetro) | Landline |
| 240-766 | Verizon Business (MCImetro) | Landline |
| 240-767 | Windstream (Paetec) | Landline |
| 240-768 | Onvoy Spectrum (Sinch) | VoIP |
| 240-769 | Bandwidth.com | VoIP |
| 240-770 | Comcast (Xfinity Voice) | VoIP |
| 240-771 | Onvoy (Sinch) | VoIP |
| 240-772 | Verizon Wireless | Wireless |
| 240-773 | Verizon Maryland | Landline |
| 240-774 | Bandwidth.com | VoIP |
| 240-775 | Bandwidth.com | VoIP |
| 240-776 | Lumen (Level 3) | VoIP |
| 240-777 | Verizon Maryland | Landline |
| 240-778 | Verizon Business (MCImetro) | Landline |
| 240-779 | Windstream (Paetec) | Landline |
| 240-780 | Lumen (Level 3) | VoIP |
| 240-781 | Verizon Business (MCImetro) | Landline |
| 240-782 | Onvoy (Sinch) | VoIP |
| 240-783 | Mte, Inc. dba Mte Paging Network | Landline |
| 240-784 | T-Mobile (Omnipoint) | Landline |
| 240-785 | Bandwidth.com | VoIP |
| 240-786 | Lumen (Level 3) | VoIP |
| 240-787 | Lumen (Level 3) | VoIP |
| 240-788 | Lumen (Level 3) | VoIP |
| 240-789 | Advanced Telecom Solutions | Landline |
| 240-790 | Lumen (Level 3) | VoIP |
| 240-791 | T-Mobile (Omnipoint) | Landline |
| 240-792 | T-Mobile (Omnipoint) | Landline |
| 240-793 | Metro by T-Mobile (MetroPCS) | Wireless |
| 240-794 | Lumen (Level 3) | VoIP |
| 240-795 | Verizon Wireless | Wireless |
| 240-796 | T-Mobile (Omnipoint) | Landline |
| 240-797 | T-Mobile (Omnipoint) | Landline |
| 240-798 | Onvoy (Sinch) | VoIP |
| 240-799 | FracTEL | Landline |
| 240-800 | Core Communications | Landline |
| 240-801 | Verizon Wireless | Wireless |
| 240-802 | Nuso | Landline |
| 240-803 | AT&T Mobility | Wireless |
| 240-804 | Onvoy (Sinch) | VoIP |
| 240-805 | Verizon Wireless | Wireless |
| 240-806 | Peerless Network | VoIP |
| 240-807 | Uscoc Of Cumberland, Inc. dba United States Cel Md | Landline |
| 240-808 | Verizon Wireless | Wireless |
| 240-809 | Onvoy (Sinch) | VoIP |
| 240-810 | T-Mobile (Omnipoint) | Landline |
| 240-812 | Lumen (Level 3) | VoIP |
| 240-813 | Windstream (Paetec) | Landline |
| 240-814 | Verizon Wireless | Wireless |
| 240-815 | Verizon Wireless | Wireless |
| 240-816 | Bandwidth.com | VoIP |
| 240-817 | T-Mobile (Omnipoint) | Landline |
| 240-818 | Verizon Wireless | Wireless |
| 240-819 | Onvoy (Sinch) | VoIP |
| 240-820 | Onvoy (Sinch) | VoIP |
| 240-821 | Windstream (Paetec) | Landline |
| 240-822 | Onvoy (Sinch) | VoIP |
| 240-823 | Verizon Business (MCImetro) | Landline |
| 240-824 | Onvoy (Sinch) | VoIP |
| 240-825 | Verizon Wireless | Wireless |
| 240-826 | Verizon Maryland | Landline |
| 240-827 | Onvoy (Sinch) | VoIP |
| 240-828 | Telnyx | Landline |
| 240-829 | Coretel Maryland | Landline |
| 240-830 | Comcast (Xfinity Voice) | VoIP |
| 240-831 | Onvoy (Sinch) | VoIP |
| 240-832 | T-Mobile (Omnipoint) | Landline |
| 240-833 | Verizon Business (MCImetro) | Landline |
| 240-834 | Onvoy (Sinch) | VoIP |
| 240-835 | Onvoy Spectrum (Sinch) | VoIP |
| 240-836 | Onvoy (Sinch) | VoIP |
| 240-837 | Verizon Business (MCImetro) | Landline |
| 240-838 | T-Mobile (Omnipoint) | Landline |
| 240-839 | Verizon Wireless | Wireless |
| 240-840 | Onvoy Spectrum (Sinch) | VoIP |
| 240-841 | Verizon Business (MCImetro) | Landline |
| 240-842 | Verizon Business (MCImetro) | Landline |
| 240-843 | Verizon Business (MCImetro) | Landline |
| 240-844 | Onvoy (Sinch) | VoIP |
| 240-845 | Verizon Business (MCImetro) | Landline |
| 240-846 | Verizon Business (MCImetro) | Landline |
| 240-847 | Onvoy (Sinch) | VoIP |
| 240-848 | Metro by T-Mobile (MetroPCS) | Wireless |
| 240-849 | AT&T (Teleport Communications) | Landline |
| 240-850 | Peerless Network | VoIP |
| 240-851 | Onvoy (Sinch) | VoIP |
| 240-852 | T-Mobile (Omnipoint) | Landline |
| 240-853 | Bandwidth.com | VoIP |
| 240-854 | T-Mobile (Omnipoint) | Landline |
| 240-855 | T-Mobile (Omnipoint) | Landline |
| 240-856 | Verizon Wireless | Wireless |
| 240-857 | Lumen (Level 3) | VoIP |
| 240-858 | Verizon Wireless | Wireless |
| 240-859 | Onvoy (Sinch) | VoIP |
| 240-860 | Peerless Network | VoIP |
| 240-861 | T-Mobile (Omnipoint) | Landline |
| 240-862 | Onvoy (Sinch) | VoIP |
| 240-863 | Lumen (Level 3) | VoIP |
| 240-864 | Windstream (Paetec) | Landline |
| 240-865 | Lumen (Level 3) | VoIP |
| 240-866 | Terra Nova Telecom | Landline |
| 240-867 | Commio | Landline |
| 240-868 | Windstream (Paetec) | Landline |
| 240-869 | T-Mobile (Omnipoint) | Landline |
| 240-870 | Onvoy (Sinch) | VoIP |
| 240-871 | T-Mobile (Omnipoint) | Landline |
| 240-872 | T-Mobile (Omnipoint) | Landline |
| 240-873 | Onvoy (Sinch) | VoIP |
| 240-874 | Onvoy (Sinch) | VoIP |
| 240-875 | Onvoy (Sinch) | VoIP |
| 240-876 | T-Mobile (Omnipoint) | Landline |
| 240-877 | Onvoy (Sinch) | VoIP |
| 240-878 | Commio | Landline |
| 240-879 | T-Mobile (Omnipoint) | Landline |
| 240-880 | Lumen (Level 3) | VoIP |
| 240-881 | Bandwidth.com | VoIP |
| 240-882 | Metro by T-Mobile (MetroPCS) | Wireless |
| 240-883 | Lumen (Level 3) | VoIP |
| 240-884 | Onvoy Spectrum (Sinch) | VoIP |
| 240-885 | Onvoy (Sinch) | VoIP |
| 240-886 | T-Mobile (Omnipoint) | Landline |
| 240-887 | T-Mobile (Omnipoint) | Landline |
| 240-888 | AT&T Mobility | Wireless |
| 240-889 | T-Mobile (Omnipoint) | Landline |
| 240-890 | Verizon Wireless | Wireless |
| 240-891 | Lumen (Level 3) | VoIP |
| 240-892 | Lumen (Level 3) | VoIP |
| 240-893 | AT&T Mobility | Wireless |
| 240-894 | Boost Mobile | Landline |
| 240-895 | Verizon Maryland | Landline |
| 240-896 | Boost Mobile | Landline |
| 240-897 | Lumen (Level 3) | VoIP |
| 240-898 | Lumen (Level 3) | VoIP |
| 240-899 | T-Mobile (Omnipoint) | Landline |
| 240-900 | Onvoy (Sinch) | VoIP |
| 240-901 | Lumen (CenturyLink) | Landline |
| 240-902 | Twilio | VoIP |
| 240-903 | Comcast (Xfinity Voice) | VoIP |
| 240-904 | Verizon Wireless | Wireless |
| 240-905 | Metro by T-Mobile (MetroPCS) | Wireless |
| 240-906 | T-Mobile (Omnipoint) | Landline |
| 240-907 | Verizon Wireless | Wireless |
| 240-908 | Onvoy (Sinch) | VoIP |
| 240-909 | Metro by T-Mobile (MetroPCS) | Wireless |
| 240-910 | Onvoy (Sinch) | VoIP |
| 240-912 | Windstream (Paetec) | Landline |
| 240-913 | Onvoy (Sinch) | VoIP |
| 240-914 | Boost Mobile | Landline |
| 240-915 | Telnyx | Landline |
| 240-916 | T-Mobile (Omnipoint) | Landline |
| 240-917 | AT&T Mobility | Wireless |
| 240-918 | T-Mobile (Omnipoint) | Landline |
| 240-919 | T-Mobile (Omnipoint) | Landline |
| 240-920 | Lumen (Level 3) | VoIP |
| 240-921 | T-Mobile (Omnipoint) | Landline |
| 240-922 | FracTEL | Landline |
| 240-923 | T-Mobile (Omnipoint) | Landline |
| 240-924 | Bandwidth.com | VoIP |
| 240-925 | Verizon Wireless | Wireless |
| 240-926 | T-Mobile (Omnipoint) | Landline |
| 240-927 | T-Mobile (Omnipoint) | Landline |
| 240-928 | AT&T Mobility | Wireless |
| 240-929 | Windstream (Paetec) | Landline |
| 240-930 | Verizon Wireless | Wireless |
| 240-931 | Nuso | Landline |
| 240-932 | Bandwidth.com | VoIP |
| 240-933 | Ton80 Communications | Landline |
| 240-934 | Ton80 Communications | Landline |
| 240-935 | Verizon Wireless | Wireless |
| 240-936 | T-Mobile (Omnipoint) | Landline |
| 240-937 | Bandwidth.com | VoIP |
| 240-938 | T-Mobile (Omnipoint) | Landline |
| 240-939 | Bandwidth.com | VoIP |
| 240-940 | Bandwidth.com | VoIP |
| 240-941 | Bandwidth.com | VoIP |
| 240-942 | Onvoy (Sinch) | VoIP |
| 240-943 | Comcast (Xfinity Voice) | VoIP |
| 240-944 | Onvoy (Sinch) | VoIP |
| 240-945 | Onvoy (Sinch) | VoIP |
| 240-946 | FracTEL | Landline |
| 240-947 | AT&T Mobility | Wireless |
| 240-948 | Bandwidth.com | VoIP |
| 240-949 | Windstream (Paetec) | Landline |
| 240-951 | AT&T (Teleport Communications) | Landline |
| 240-952 | AT&T (Teleport Communications) | Landline |
| 240-953 | AT&T (Teleport Communications) | Landline |
| 240-954 | AT&T (Teleport Communications) | Landline |
| 240-955 | Bandwidth.com | VoIP |
| 240-956 | Onvoy (Sinch) | VoIP |
| 240-957 | Bandwidth.com | VoIP |
| 240-960 | T-Mobile (Omnipoint) | Landline |
| 240-961 | Verizon Wireless | Wireless |
| 240-962 | Verizon Wireless | Wireless |
| 240-963 | Bandwidth.com | VoIP |
| 240-964 | Verizon Maryland | Landline |
| 240-965 | Windstream (Paetec) | Landline |
| 240-966 | Ton80 Communications | Landline |
| 240-967 | Verizon Wireless | Wireless |
| 240-968 | AT&T Mobility | Wireless |
| 240-969 | Commio | Landline |
| 240-970 | Onvoy (Sinch) | VoIP |
| 240-971 | Lumen (CenturyLink) | Landline |
| 240-972 | Baltimore-Washington Telephone | Landline |
| 240-973 | Metro by T-Mobile (MetroPCS) | Wireless |
| 240-974 | AT&T Mobility | Wireless |
| 240-975 | Verizon Wireless | Wireless |
| 240-977 | Onvoy (Sinch) | VoIP |
| 240-978 | T-Mobile (Omnipoint) | Landline |
| 240-979 | Lumen (Level 3) | VoIP |
| 240-980 | Verizon Wireless | Wireless |
| 240-981 | Nuso | Landline |
| 240-982 | Onvoy (Sinch) | VoIP |
| 240-983 | Nuso | Landline |
| 240-984 | AT&T (Teleport Communications) | Landline |
| 240-985 | Lumen (CenturyLink) | Landline |
| 240-986 | Onvoy (Sinch) | VoIP |
| 240-987 | AT&T Mobility | Wireless |
| 240-988 | T-Mobile (Omnipoint) | Landline |
| 240-989 | AT&T Mobility | Wireless |
| 240-990 | AT&T Mobility | Wireless |
| 240-991 | T-Mobile (Omnipoint) | Landline |
| 240-992 | T-Mobile (Omnipoint) | Landline |
| 240-993 | Verizon Business (MCImetro) | Landline |
| 240-994 | Verizon Wireless | Wireless |
| 240-995 | Onvoy (Sinch) | VoIP |
| 240-996 | Lumen (Level 3) | VoIP |
| 240-997 | Verizon Wireless | Wireless |
| 240-998 | Lumen (CenturyLink) | Landline |
Line type reflects the registry assignment; ported numbers can differ. Unknown 240 number calling? ActiveArmor® screens it before you ever look it up.
Cities & Communities in and around Area Code 240
Communities the 240 serves, filtered against the numbering registry’s rate centers, with each community’s key ZIP codes and the AT&T home internet available there. Cities link to their local AT&T internet page.
| City / community | Key ZIP codes | AT&T internet |
|---|---|---|
| Beltsville | 20705, 20740, 20770 | Internet Air |
| Bethesda | 20894, 20892, 20814 | Internet Air |
| Bowie | 20715, 20716, 20721 | Internet Air |
| Braddock Heights | 21714, 21703, 21705 | Internet Air |
| Brandywine | 20613, 20601, 20623 | Internet Air |
| Brentwood | 20712, 20722, 20781 | Internet Air |
| Brunswick | 21716, 21758, 20180 | Internet Air |
| Bryans Road | 20616, 20658, 20675 | Internet Air |
| Capitol Heights | 20743, 20747, 20019 | Internet Air |
| Chevy Chase | 20815, 20894, 20889 | Internet Air |
| Clarksburg | 20876, 20871, 20886 | Internet Air |
| Clinton | 20735, 20623, 20744 | Internet Air |
| College Park | 20742, 20740, 20783 | Internet Air |
| Columbia | 21044, 21045, 21046 | Internet Air |
| Crofton | 21114, 21054, 20715 | Internet Air |
| Cumberland | 21502, 26767, 21529 | Internet Air |
| Damascus | 20872, 20882, 20871 | Internet Air |
| Derwood | 20855, 20880, 20850 | Internet Air |
| District Heights | 20747, 20743, 20746 | Internet Air |
| Elkridge | 21075, 21076, 21077 | Internet Air |
| Emmitsburg | 21727, 17320, 21778 | Internet Air |
| Forestville | 20747, 20743, 20746 | Check address |
| Fort Washington | 20744, 22308, 22307 | Internet Air |
| Frederick | 21705, 21702, 21701 | Internet Air |
| Frostburg | 21543, 21532, 21542 | Internet Air |
| Gaithersburg | 20877, 20899, 20880 | Internet Air |
| Germantown | 20876, 20841, 20899 | Internet Air |
| Grantsville | 21536, 15562, 15565 | Internet Air |
| Greenbelt | 20770, 20771, 20740 | Internet Air |
| Hagerstown | 21740, 21734, 21767 | Internet Air |
| Hancock | 21750 | Internet Air |
| Hughesville | 20637, 20617, 20608 | Internet Air |
| Hyattsville | 20782, 20781, 20712 | Internet Air |
| Indian Head | 20658, 20616, 20640 | Internet Air |
| Jessup | 20794, 20701, 20763 | Internet Air |
| Kensington | 20895, 20896, 20889 | Internet Air |
| La Plata | 20646, 20695, 20675 | Internet Air |
| Lanham | 20706, 20769, 20784 | Internet Air |
| Largo | 20774, 20721, 20747 | Check address |
| Laurel | 20707, 20723, 20763 | Internet Air |
| Lavale | — | Check address |
| Leonardtown | 20650, 20656, 20636 | Internet Air |
| Mechanicsville | 20659, 20660, 20624 | Internet Air |
| Middletown | 21769, 21714, 21702 | Internet Air |
| Monrovia | 21770, 21754, 21774 | Internet Air |
| Montgomery Village | 20886, 20876, 20879 | Internet Air |
| Mount Airy | 21771, 21797, 21770 | Internet Air |
| Mount Rainier | 20712, 20722, 20018 | Internet Air |
| Myersville | 21773, 21769, 21713 | Internet Air |
| New Market | 21774, 21770, 21754 | Internet Air |
| Oakland | 21550 | Internet Air |
| Odenton | 21054, 21113, 20755 | Internet Air |
| Oxon Hill | 20745, 20748, 20744 | Internet Air |
| Poolesville | 20837, 20839, 20842 | Internet Air |
| Potomac | 20854, 20817, 20818 | Internet Air |
| Prince Frederick | 20678, 20639, 20676 | Internet Air |
| Rawlings | 21557, 21542, 26753 | Internet Air |
| Rockville | 20850, 20851, 20852 | Internet Air |
| Sabillasville | 21780, 21719, 17214 | Internet Air |
| Savage | 20763, 20794, 20701 | Internet Air |
| Silver Spring | 20910, 20901, 20012 | Internet Air |
| Smithsburg | 21783, 21742, 21719 | Internet Air |
| Suitland | 20746, 20747, 20748 | Internet Air |
| Takoma Park | 20912, 20012, 20782 | Internet Air |
| Temple Hills | 20748, 20746, 20745 | Internet Air |
| Thurmont | 21788, 21778, 21780 | Internet Air |
| Upper Marlboro | 20772, 20774, 20711 | Internet Air |
| Waldorf | 20602, 20603, 20695 | Internet Air |
| Walkersville | 21793, 21701, 21702 | Internet Air |
| Westernport | 26750, 21540, 21562 | Internet Air |
| Wheaton | 20902, 20895, 20896 | Check address |
| Williamsport | 21795, 21781, 25419 | Internet Air |
| Woodsboro | 21798, 21793, 21762 | Internet Air |
City list: AT&T service-area records and the public numbering registry. Key ZIPs: U.S. Census data for each community. Internet type: AT&T eligibility data, June 2026. Availability is always confirmed at your exact address.
240 Area Code Map
Area code 240 serves Waldorf and nearby communities in MD.
↓ Printable PDF
Open the printable 240 map (PDF) · All Maryland area codes · Home internet in Waldorf
Counties Covered by the 240 Area Code
Counties are served in whole or in part; population is U.S. Census Bureau ACS 2023. The 240 also reaches parts of Frederick County, Carroll County, Charles County, Washington County, St. Mary's County, Calvert County, Allegany County, Garrett County.
The 240, explained
Area Code 240: More Than a Number in Waldorf
In Waldorf, the 240 is more than digits on a caller ID. It arrived in 1997, layered onto the 301 region, and it has meant Waldorf and surrounding communities ever since — 785 carrier prefixes keep its lines busy today, and an established 240 number still says you’ve been here a while.
The map tells its own story: Waldorf and surrounding communities, with 227 and 301 sharing the same streets today. Several codes, one local calling area, no long-distance between any of them — only the 240 came first.
Keeping a 240 matters here. An existing 240 number ports to a new phone, a new carrier, or a new AT&T line, and stays yours anywhere in the U.S. New lines in the area often draw 227 instead — one more reason locals hold on to theirs.
Need a new local number? Shop plans Keep your 240: bring it to AT&TInternet, wireless & stores in the 240
AT&T Home Internet in Area Code 240
AT&T home internet serves communities across area code 240, with AT&T Fiber where it’s built and AT&T Internet Air covering the gaps. Availability is decided address by address; every community in the table above links to its local internet page.
No data capsNo annual contractNo equipment fees
AT&T Fiber: Ltd. avail/areas. Speeds based on wired connection. Actual speeds vary. For 5-GIG, single device wired speed maximum 4.7Gbps. For more info., visit att.com/speed101. AT&T Internet Air: AT&T Internet Air not available in all areas. In rare cases, if your usage is contributing to congestion on the network, AT&T will greatly reduce your speed for a minimum of 30 min.
Pair it with wireless in an internet + wireless bundle. Run a business in the 240? AT&T Business Internet is available at many addresses.
Fiber install day in the 240Check your address ›
Moving to Area Code 240?
Set up home internet in area code 240 before the boxes arrive, and find your new community in the table above or check your exact address below.
Your number moves with you: port your 240 number from anywhere, or keep your old number when you arrive. An AT&T store nearby can handle the whole switch in one visit.
1 · Check your addressSee Fiber or Internet Air availability in seconds.
2 · Schedule for move-in dayInstall lined up before the boxes arrive.
3 · Keep your numberYour mobile number ports; your internet moves.
Get set up before move-in dayPlan your move ›
AT&T Wireless in Area Code 240
AT&T’s 5G network covers most of area code 240. ActiveArmor® spam blocking is included with every unlimited plan, your 240 number stays yours, and great cell phone deals in Waldorf are a tap away.
5G across the 240ActiveArmor® includedKeep your 240 number
AT&T may temporarily slow data speeds if the network is busy. 5G req’s compatible plan & device. Coverage not available everywhere. Learn more at att.com/5Gforyou.
Need a new 240 number? Ask when you activate a line: the 240 shares its territory with 227 and 301, so new lines may draw one of those codes, and porting an existing 240 number keeps it yours.
Stay connected across WaldorfShop wireless plans ›
AT&T Stores in Area Code 240
Looking for cell phone stores in area code 240? These stores answer on 240 numbers — walk in for switching, porting, upgrades and hands-on help:
Every AT&T store in the region, company owned and authorized retailer alike, each with its own store page.
Real help from real people in WaldorfFind your store ›
All AT&T Stores with 240 Numbers
Every store below answers on a 240 number. Tap any number to call.
7 AT&T stores with 240 numbers
International Calling from Area Code 240
Calling abroad from area code 240? AT&T International Calling adds discounted or unlimited rates to 200+ countries on top of your existing plan, and unlimited texting from the U.S. to 200+ destinations is already included on AT&T unlimited plans.
Where the 240 calls most:El SalvadorIndiaNigeriaGuatemalaChina
Top places of birth among foreign-born residents of the 240’s counties, U.S. Census Bureau ACS 2023.
Calling abroad from a 240 number: dial 011 + country code + number (or just + on a mobile). Traveling abroad instead? International Day Pass® takes your talk, text and data with you for a flat daily rate.
International Calling and International Day Pass® availability, rates and included destinations vary by plan; see att.com for the current country list.
Waldorf calls the worldSee international plans ›
240 Area Code Quick Facts & Dialing
StateMaryland
Time zoneEastern
Established1997added to the 301 region
Dialing10 digitsrequired
Toll-free?Nogeographic code
Population4.02Mcounties served, Census 2023
Largest cityWaldorf+72 more ›
How to dial a 240 number
| Scenario | Format | Example |
|---|---|---|
| Local call (within the region) | 240 + 7-digit number | (240) 555-0100 |
| Long distance (within the U.S.) | 1 + 240 + 7-digit number | 1 (240) 555-0100 |
| Calling 240 from another country | +1 240 + 7-digit number | +1 240 555 0100 |
| From a mobile phone | (240) + 7-digit number | (240) 555-0100 |
A Short History of Area Code 240
Added in 1997 to the 301 region, the 240 serves Waldorf and surrounding communities. No splits or overlays have divided its territory since.
1997Added to the 301 region
In service since 1997. Today the 240’s territory is shared with overlay codes 227 and 301, so ten-digit dialing is required.
Nearby & Related Area Codes
Browse area codes by state: Maryland (6) · California (41) · Texas (29) · Florida (23) · all 50 states ›
Area Code 240 FAQ
What area code is 240?
240 is the area code for Waldorf, Maryland and the surrounding communities. It appears at the front of every local 10-digit phone number in the area.
Where is area code 240?
Area code 240 serves Waldorf, Maryland and nearby communities including Andrews Air Force Base, Annapolis, Ashton. The full city list is in the cities table above.
Why did I get a text message from a 240 number?
The most common 240 text scam opens like a wrong number (“u at home?”, “are you busy tomorrow?”) and tries to move you to WhatsApp. Don’t reply. Forward the text to 7726 (SPAM) and delete it. AT&T ActiveArmor® filters known scam senders automatically.
Who called me from area code 240?
A 240 number usually means Waldorf or a nearby community, but spoofing is common. This page’s prefix lookup isn’t a reverse phone lookup — it can’t name the caller, but it shows the carrier, line type and community a number was issued to, which is often enough to judge a call.
What time zone is area code 240?
Eastern time. The live local time is shown at the top of this page.
Why am I getting calls from 240 numbers?
240 is an active, legitimate Maryland area code, but scammers spoof local numbers because people answer them. If there’s no voicemail, let it go. AT&T ActiveArmor® blocks and labels spam automatically, and you can report unwanted calls at reportfraud.ftc.gov. The spam report board above shows which 240 prefixes are drawing complaints right now.
Is 240 a toll-free number?
No. 240 is a geographic area code tied to Waldorf, Maryland. Toll-free calls come from 800, 833, 844, 855, 866, 877 and 888 numbers.
What’s the difference between 240 and 301?
Nothing on the map: 240 is an overlay of 301, covering the same Waldorf area. Calls between them are local; only the three digits at the front differ. Overlay codes 227 share the same map.
Which cities use area code 240?
The largest communities include Beltsville, Bethesda, Bowie, Braddock Heights, Brandywine. The full list is in the cities table above.
Does AT&T offer service in the 240?
Yes: home internet, wireless and retail stores across the 240. Availability is checked address by address.
Can I still get a 240 number?
Yes. Carriers in Waldorf and across the 240 still issue 240 numbers on new lines, and you can port an existing 240 number to any carrier. Newer lines in the same area may also receive numbers from an overlay code.
Can I keep my 240 number if I move?
Yes. Phone numbers are portable: your 240 number can move with you anywhere in the U.S., whether you stay with your carrier or switch.
Sources: city and store data from AT&T records; prefix and carrier assignments from the public numbering registry (pulled July 2026). Facts regenerate monthly.
