Maryland
Area code 240
Area code 240 covers Washington Grove, Washington, Laurel, Frederick, Gaithersburg and more in Maryland, in the Eastern time zone. It has been in service since 1997. It shares its area with 227, 301 (an overlay).
WhereMaryland
Time zoneEastern
Exchanges785
Flagged numbers35128 complaints
Most reported 240 numbers
(240) 653-5838Shady callPolitical(240) 267-4370Shady call(240) 200-5502Shady call(240) 858-8219Caution(240) 769-7894Shady call(240) 769-7887Shady call(240) 232-8819Caution(240) 897-8638CautionPolitical(240) 782-8385CautionPolitical(240) 806-9525CautionPolitical(240) 859-0675CautionPolitical(240) 209-9245Caution(240) 673-2163CautionMedical devices(240) 653-5571Shady call(240) 858-8463Shady callPolitical(240) 253-1622Shady call(240) 318-9545Shady callBusiness loans(240) 509-5501Shady call(240) 828-1640Caution(240) 769-7885Caution(240) 965-1641CautionHome improvement(240) 828-1623CautionPolitical(240) 840-9810CautionMedicare / Medicaid(240) 859-0548CautionPolitical
Carriers in 240
Line types
Counted over the exchanges, from the carrier each was assigned to.
Cities in area code 240
Washington GroveWashingtonLaurelFrederickGaithersburgHagerstownWaldorfLeonardtown
Every 240 exchange
The first six digits of a number. Each one with 3 or more flagged numbers has its own page: who it was assigned to and the numbers in it.
| Exchange | City | Carrier | Type | Flagged |
|---|---|---|---|---|
| 240-200 | Washington Grove | Bandwidth | VoIP | 1 |
| 240-201 | Ridgely | Peerless Network | VoIP | 1 |
| 240-202 | Highfield | Onvoy (Sinch) | VoIP | 0 |
| 240-203 | Hagerstown | T-Mobile | Wireless | 0 |
| 240-204 | Washington Grove | Verizon Wireless | Wireless | 0 |
| 240-205 | Washington | AT&T Mobility | Wireless | 0 |
| 240-206 | Verizon Business | VoIP | 0 | |
| 240-207 | Windstream (PAETEC) | VoIP | 0 | |
| 240-208 | La Plata | Peerless Network | VoIP | 0 |
| 240-209 | Indian Head | Peerless Network | VoIP | 1 |
| 240-210 | Waldorf | AT&T Mobility | Wireless | 0 |
| 240-212 | Oakland | Core Communications | Landline | 0 |
| 240-213 | Waldorf | Peerless Network | VoIP | 0 |
| 240-214 | Peerless Network | VoIP | 0 | |
| 240-215 | Frederick | Lumen (Level 3) | VoIP | 0 |
| 240-216 | Waldorf | T-Mobile (Metro) | Wireless | 0 |
| 240-217 | Hagerstown | T-Mobile | Wireless | 0 |
| 240-218 | Nanjemoy | Peerless Network | VoIP | 0 |
| 240-219 | Ridgely | Peerless Network | VoIP | 0 |
| 240-220 | Poolesville | Peerless Network | VoIP | 0 |
| 240-221 | Washington | Verizon | Landline | 0 |
| 240-222 | Waldorf | Windstream (PAETEC) | VoIP | 0 |
| 240-223 | Washington Grove | Verizon Business | VoIP | 0 |
| 240-224 | Gaithersburg | Verizon Wireless | Wireless | 0 |
| 240-225 | Frederick | Core Communications | Landline | 0 |
| 240-226 | Oakland | Onvoy (Sinch) | VoIP | 0 |
| 240-227 | Myersville | AT&T Mobility | Wireless | 0 |
| 240-228 | Verizon | Landline | 0 | |
| 240-229 | Waldorf | Lumen (Level 3) | VoIP | 0 |
| 240-230 | Hughesvl | Lumen (Level 3) | VoIP | 0 |
| 240-231 | Hagerstown | Core Communications | Landline | 0 |
| 240-232 | Lumen (Level 3) | VoIP | 1 | |
| 240-233 | AT&T | VoIP | 0 | |
| 240-234 | Washington Grove | Verizon Wireless | Wireless | 0 |
| 240-235 | Washington Grove | Windstream (PAETEC) | VoIP | 0 |
| 240-236 | Frederick | Verizon | Landline | 0 |
| 240-237 | AT&T | VoIP | 0 | |
| 240-238 | Washington | Windstream (PAETEC) | VoIP | 0 |
| 240-239 | Leonardtown | Core Communications | Landline | 0 |
| 240-240 | Fractel | VoIP | 0 | |
| 240-241 | Starpower Communications | Landline | 0 | |
| 240-242 | Washington | Starpower Communications | Landline | 0 |
| 240-243 | Gaithersburg | Verizon Business | VoIP | 0 |
| 240-244 | Washington | Starpower Communications | Landline | 0 |
| 240-245 | Starpower Communications | Landline | 0 | |
| 240-246 | Gaithersburg | Starpower Communications | Landline | 0 |
| 240-247 | Washington Grove | Verizon Business | VoIP | 0 |
| 240-248 | Ridgely | Peerless Network | VoIP | 0 |
| 240-249 | AT&T | VoIP | 0 | |
| 240-250 | Peerless Network | VoIP | 0 | |
| 240-251 | Highfield | Core Communications | Landline | 0 |
| 240-252 | Gaithersburg | Lumen (Level 3) | VoIP | 0 |
| 240-253 | Washington Grove | Bandwidth | VoIP | 1 |
| 240-254 | Hughesvl | AT&T | VoIP | 0 |
| 240-255 | Poolesville | Peerless Network | VoIP | 0 |
| 240-256 | Leonardtown | AT&T | VoIP | 0 |
| 240-257 | Nanjemoy | AT&T | VoIP | 0 |
| 240-258 | Ridgely | AT&T | VoIP | 0 |
| 240-259 | Hughesvl | Onvoy (Sinch) | VoIP | 0 |
| 240-260 | Verizon Business | VoIP | 0 | |
| 240-261 | Gaithersburg | Onvoy (Sinch) | VoIP | 0 |
| 240-262 | Comcast (Xfinity) | VoIP | 0 | |
| 240-263 | Washington Grove | AT&T Mobility | Wireless | 0 |
| 240-264 | Laurel | Verizon | Landline | 0 |
| 240-265 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-266 | Peerless Network | VoIP | 0 | |
| 240-267 | Hagerstown | Verizon Wireless | Wireless | 1 |
| 240-268 | Washington | Verizon Business | VoIP | 0 |
| 240-269 | Washington | Peerless Network | VoIP | 0 |
| 240-270 | Waldorf | Verizon Wireless | Wireless | 0 |
| 240-271 | Washington Grove | AT&T Mobility | Wireless | 0 |
| 240-272 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-273 | Washington Grove | Lumen (Level 3) | VoIP | 0 |
| 240-274 | Washington Grove | AT&T Mobility | Wireless | 0 |
| 240-275 | Grantsville | Core Communications | Landline | 0 |
| 240-276 | Washington | Verizon | Landline | 0 |
| 240-277 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-278 | Laurel | Verizon Wireless | Wireless | 0 |
| 240-279 | Waldorf | Core Communications | Landline | 0 |
| 240-280 | Laurel | Comcast (Xfinity) | VoIP | 0 |
| 240-281 | Washington Grove | AT&T Mobility | Wireless | 0 |
| 240-282 | Peerless Network | VoIP | 0 | |
| 240-283 | Washington | Windstream (PAETEC) | VoIP | 0 |
| 240-284 | Frostburg | Lumen (Level 3) | VoIP | 0 |
| 240-285 | Frederick | Verizon Wireless | Wireless | 0 |
| 240-286 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-287 | Hancock | Core Communications | Landline | 0 |
| 240-288 | Thurmont | Comcast (Xfinity) | VoIP | 0 |
| 240-289 | Washington Grove | Windstream (PAETEC) | VoIP | 0 |
| 240-290 | Washington | Verizon Business | VoIP | 0 |
| 240-291 | Hagerstown | AT&T Mobility | Wireless | 0 |
| 240-292 | Washington | Verizon | Landline | 0 |
| 240-293 | Washington | Starpower Communications | Landline | 0 |
| 240-294 | Laurel | Verizon Business | VoIP | 0 |
| 240-295 | Laurel | Windstream (PAETEC) | VoIP | 0 |
| 240-296 | Washington Grove | Windstream (PAETEC) | VoIP | 0 |
| 240-297 | Lumen (Level 3) | VoIP | 0 | |
| 240-298 | Leonardtown | Verizon Wireless | Wireless | 0 |
| 240-299 | Waldorf | T-Mobile (Metro) | Wireless | 0 |
| 240-300 | Waldorf | Verizon Wireless | Wireless | 0 |
| 240-301 | Clear Spring | Onvoy (Sinch) | VoIP | 0 |
| 240-302 | Laurel | AT&T Mobility | Wireless | 0 |
| 240-303 | Washington | Windstream (PAETEC) | VoIP | 0 |
| 240-304 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-305 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-306 | Gaithersburg | Verizon Business | VoIP | 0 |
| 240-307 | Emmitsburg | Bandwidth | VoIP | 0 |
| 240-308 | AT&T Mobility | Wireless | 0 | |
| 240-309 | Leonardtown | Verizon Wireless | Wireless | 0 |
| 240-310 | Hagerstown | T-Mobile | Wireless | 0 |
| 240-312 | Washington Grove | Windstream (PAETEC) | VoIP | 0 |
| 240-313 | Hagerstown | Verizon | Landline | 0 |
| 240-314 | Washington | Verizon | Landline | 0 |
| 240-315 | Frederick | Verizon | Landline | 0 |
| 240-316 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-317 | Starpower Communications | Landline | 0 | |
| 240-318 | Washington | Verizon | Landline | 1 |
| 240-319 | Laurel | Verizon Wireless | Wireless | 0 |
| 240-320 | Waldorf | Windstream (PAETEC) | VoIP | 0 |
| 240-321 | Oakland | UScellular | Wireless | 0 |
| 240-322 | Mccoole | Core Communications | Landline | 0 |
| 240-323 | Emmitsburg | Core Communications | Landline | 0 |
| 240-324 | YMax (magicJack) | VoIP | 0 | |
| 240-325 | Core Communications | Landline | 0 | |
| 240-326 | Windstream (PAETEC) | VoIP | 0 | |
| 240-327 | Gaithersburg | Core Communications | Landline | 0 |
| 240-328 | Washington | Verizon | Landline | 0 |
| 240-329 | Hagerstown | Lumen (Level 3) | VoIP | 0 |
| 240-330 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-331 | Washington Grove | Peerless Network | VoIP | 0 |
| 240-332 | Peerless Network | VoIP | 0 | |
| 240-333 | Washington Grove | Windstream (PAETEC) | VoIP | 0 |
| 240-334 | Lumen (Level 3) | VoIP | 0 | |
| 240-335 | Windstream (PAETEC) | VoIP | 0 | |
| 240-336 | Washington Grove | Core Communications | Landline | 0 |
| 240-337 | Washington Grove | Onvoy (Sinch) | VoIP | 0 |
| 240-338 | Washington Grove | Verizon Wireless | Wireless | 0 |
| 240-339 | Windstream (PAETEC) | VoIP | 0 | |
| 240-340 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-341 | Buckeystn | Verizon Business | VoIP | 0 |
| 240-342 | Starpower Communications | Landline | 0 | |
| 240-343 | Hancock | Verizon Wireless | Wireless | 0 |
| 240-344 | Frederick | AT&T Mobility | Wireless | 0 |
| 240-345 | Lumen (Level 3) | VoIP | 0 | |
| 240-346 | Waldorf | T-Mobile (Metro) | Wireless | 0 |
| 240-347 | Hagerstown | Bandwidth | VoIP | 0 |
| 240-348 | Washington | Lumen (Level 3) | VoIP | 0 |
| 240-349 | La Plata | Onvoy (Sinch) | VoIP | 0 |
| 240-350 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-351 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-352 | La Plata | Peerless Network | VoIP | 0 |
| 240-353 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-354 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-355 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-356 | Myersville | Lumen (Level 3) | VoIP | 0 |
| 240-357 | Frederick | Verizon Wireless | Wireless | 0 |
| 240-358 | Peerless Network | VoIP | 0 | |
| 240-359 | Indian Head | Peerless Network | VoIP | 0 |
| 240-360 | Laurel | T-Mobile | Wireless | 0 |
| 240-361 | Gaithersburg | Windstream (PAETEC) | VoIP | 0 |
| 240-362 | Cumberland | Verizon | Landline | 0 |
| 240-363 | Washington | Onvoy (Sinch) | VoIP | 0 |
| 240-364 | Gaithersburg | Windstream (PAETEC) | VoIP | 0 |
| 240-365 | Baltimore-Washington Telephone... | Landline | 0 | |
| 240-366 | Williamsport | Bandwidth | VoIP | 0 |
| 240-367 | Frederick | T-Mobile | Wireless | 0 |
| 240-368 | Waldorf | Peerless Network | VoIP | 0 |
| 240-369 | Mount Airy | Core Communications | Landline | 0 |
| 240-370 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-371 | Washington | Peerless Network | VoIP | 0 |
| 240-372 | Gaithersburg | T-Mobile (Metro) | Wireless | 0 |
| 240-373 | Verizon | Landline | 0 | |
| 240-374 | Laurel | Lumen (Level 3) | VoIP | 0 |
| 240-375 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-376 | Hughesvl | Peerless Network | VoIP | 0 |
| 240-377 | Indian Head | Lumen (Level 3) | VoIP | 0 |
| 240-378 | Cumberland | Core Communications | Landline | 0 |
| 240-379 | Frederick | Verizon | Landline | 0 |
| 240-380 | Washington Grove | Verizon Wireless | Wireless | 0 |
| 240-381 | Washington Grove | AT&T Mobility | Wireless | 0 |
| 240-382 | Hagerstown | AT&T | VoIP | 0 |
| 240-383 | Washington Grove | AT&T Mobility | Wireless | 0 |
| 240-384 | Peerless Network | VoIP | 0 | |
| 240-385 | Myersville | Verizon | Landline | 0 |
| 240-386 | Washington | Verizon | Landline | 0 |
| 240-387 | Windstream (PAETEC) | VoIP | 0 | |
| 240-388 | Gaithersburg | T-Mobile (Metro) | Wireless | 0 |
| 240-389 | Windstream (PAETEC) | VoIP | 0 | |
| 240-390 | Windstream (PAETEC) | VoIP | 0 | |
| 240-391 | Onvoy (Sinch) | VoIP | 0 | |
| 240-392 | Washington Grove | Starpower Communications | Landline | 0 |
| 240-393 | Washington Grove | Verizon Wireless | Wireless | 0 |
| 240-394 | Mount Airy | AT&T Mobility | Wireless | 0 |
| 240-395 | Washington Grove | Windstream (PAETEC) | VoIP | 0 |
| 240-396 | Washington Grove | Lumen (Level 3) | VoIP | 0 |
| 240-397 | Frederick | Verizon Wireless | Wireless | 0 |
| 240-398 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-399 | Washington | Verizon Business | VoIP | 0 |
| 240-400 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-401 | Washington | AT&T Mobility | Wireless | 0 |
| 240-402 | Verizon Business | VoIP | 0 | |
| 240-403 | Washington | Windstream (PAETEC) | VoIP | 0 |
| 240-404 | Gaithersburg | Verizon Business | VoIP | 0 |
| 240-405 | Frederick | Windstream (PAETEC) | VoIP | 0 |
| 240-406 | Washington | AT&T Mobility | Wireless | 0 |
| 240-407 | Washington | Lumen (Level 3) | VoIP | 0 |
| 240-408 | Washington | AT&T Mobility | Wireless | 0 |
| 240-409 | Frederick | AT&T Mobility | Wireless | 0 |
| 240-410 | Cumberland | T-Mobile | Wireless | 0 |
| 240-412 | Waldorf | T-Mobile (Metro) | Wireless | 0 |
| 240-413 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-414 | Washington Grove | Peerless Network | VoIP | 0 |
| 240-415 | Frederick | YMax (magicJack) | VoIP | 0 |
| 240-416 | Waldorf | AT&T Mobility | Wireless | 0 |
| 240-417 | Washington Grove | T-Mobile (Metro) | Wireless | 0 |
| 240-418 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-419 | Waldorf | Verizon Wireless | Wireless | 0 |
| 240-420 | Hagerstown | Verizon | Landline | 0 |
| 240-421 | Washington | T-Mobile | Wireless | 0 |
| 240-422 | Frederick | T-Mobile | Wireless | 0 |
| 240-423 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-424 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-425 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-426 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-427 | Waldorf | Verizon Business | VoIP | 0 |
| 240-428 | Washington | Bandwidth | VoIP | 0 |
| 240-429 | Washington Grove | Verizon Wireless | Wireless | 0 |
| 240-430 | Washington | Windstream (PAETEC) | VoIP | 0 |
| 240-431 | T-Mobile | Wireless | 0 | |
| 240-432 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-433 | Washington | Windstream (PAETEC) | VoIP | 0 |
| 240-434 | Leonardtown | Lumen (Level 3) | VoIP | 0 |
| 240-435 | Waldorf | Verizon Wireless | Wireless | 0 |
| 240-436 | Buckeystn | Lumen (Level 3) | VoIP | 0 |
| 240-437 | Verizon Business | VoIP | 0 | |
| 240-438 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-439 | Frederick | Verizon Wireless | Wireless | 0 |
| 240-440 | Frederick | AT&T Mobility | Wireless | 0 |
| 240-441 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-442 | Oakland | Verizon | Landline | 0 |
| 240-443 | Washington Grove | Onvoy (Sinch) | VoIP | 0 |
| 240-444 | Laurel | Verizon Wireless | Wireless | 0 |
| 240-445 | Washington Grove | Onvoy (Sinch) | VoIP | 0 |
| 240-446 | Frederick | Verizon Wireless | Wireless | 0 |
| 240-447 | Washington | AT&T Mobility | Wireless | 0 |
| 240-448 | Waldorf | Onvoy (Sinch) | VoIP | 0 |
| 240-449 | Gaithersburg | AT&T Mobility | Wireless | 0 |
| 240-450 | Washington Grove | Windstream (PAETEC) | VoIP | 0 |
| 240-451 | Thurmont | Onvoy (Sinch) | VoIP | 0 |
| 240-452 | Hagerstown | T-Mobile (Metro) | Wireless | 0 |
| 240-453 | Washington | Verizon | Landline | 0 |
| 240-454 | Gaithersburg | Windstream (PAETEC) | VoIP | 0 |
| 240-455 | Washington Grove | Windstream (PAETEC) | VoIP | 0 |
| 240-456 | Laurel | Verizon | Landline | 0 |
| 240-457 | Frederick | Verizon Wireless | Wireless | 0 |
| 240-458 | Waldorf | Verizon Wireless | Wireless | 0 |
| 240-459 | Laurel | Verizon Wireless | Wireless | 0 |
| 240-460 | Washington Grove | AT&T Mobility | Wireless | 0 |
| 240-461 | Washington Grove | AT&T Mobility | Wireless | 0 |
| 240-462 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-463 | Washington Grove | AT&T Mobility | Wireless | 0 |
| 240-464 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-465 | Washington Grove | Peerless Network | VoIP | 0 |
| 240-466 | AT&T Mobility | Wireless | 0 | |
| 240-467 | Washington Grove | Comcast (Xfinity) | VoIP | 0 |
| 240-468 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-469 | Hagerstown | T-Mobile | Wireless | 0 |
| 240-470 | Laurel | Verizon Wireless | Wireless | 0 |
| 240-471 | Washington | Onvoy (Sinch) | VoIP | 0 |
| 240-472 | Washington Grove | AT&T Mobility | Wireless | 0 |
| 240-473 | Windstream (PAETEC) | VoIP | 0 | |
| 240-474 | Gaithersburg | Baltimore-Washington Telephone... | Landline | 0 |
| 240-475 | Washington Grove | AT&T Mobility | Wireless | 0 |
| 240-476 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-477 | Gaithersburg | Windstream (PAETEC) | VoIP | 0 |
| 240-478 | Washington Grove | AT&T Mobility | Wireless | 0 |
| 240-479 | Washington Grove | Verizon Wireless | Wireless | 0 |
| 240-480 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-481 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-482 | Washington Grove | Windstream (PAETEC) | VoIP | 0 |
| 240-483 | Washington Grove | Comcast (Xfinity) | VoIP | 0 |
| 240-484 | Laurel | AT&T Mobility | Wireless | 0 |
| 240-485 | Washington Grove | Windstream (PAETEC) | VoIP | 0 |
| 240-486 | T-Mobile | Wireless | 0 | |
| 240-487 | Washington Grove | Windstream (PAETEC) | VoIP | 0 |
| 240-488 | Oakland | Shentel Communications | Landline | 0 |
| 240-489 | Poolesville | Verizon Business | VoIP | 0 |
| 240-490 | Middletown | T-Mobile | Wireless | 0 |
| 240-491 | Washington Grove | Lumen (Level 3) | VoIP | 0 |
| 240-492 | Washington Grove | Windstream (PAETEC) | VoIP | 0 |
| 240-493 | Washington Grove | Windstream (PAETEC) | VoIP | 0 |
| 240-494 | Washington Grove | Windstream (PAETEC) | VoIP | 0 |
| 240-495 | Washington Grove | Verizon Wireless | Wireless | 0 |
| 240-496 | Leonardtown | Verizon Wireless | Wireless | 0 |
| 240-497 | Washington Grove | Verizon | Landline | 0 |
| 240-498 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-499 | Washington | Windstream (PAETEC) | VoIP | 0 |
| 240-500 | Hagerstown | Windstream (PAETEC) | VoIP | 0 |
| 240-501 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-502 | Washington Grove | Bandwidth | VoIP | 0 |
| 240-503 | Peerless Network | VoIP | 0 | |
| 240-504 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-505 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-506 | Washington | AT&T Mobility | Wireless | 0 |
| 240-507 | Washington Grove | Verizon Wireless | Wireless | 0 |
| 240-508 | Washington Grove | T-Mobile (Metro) | Wireless | 0 |
| 240-509 | Bandwidth | VoIP | 1 | |
| 240-510 | Verizon Business | VoIP | 0 | |
| 240-512 | Core Communications | Landline | 0 | |
| 240-513 | Hagerstown | T-Mobile | Wireless | 0 |
| 240-514 | Washington | Windstream (PAETEC) | VoIP | 0 |
| 240-515 | Washington Grove | AT&T Mobility | Wireless | 0 |
| 240-516 | Washington | Windstream (PAETEC) | VoIP | 0 |
| 240-517 | Laurel | Verizon Wireless | Wireless | 0 |
| 240-518 | Waldorf | Nuso | Landline | 0 |
| 240-519 | Washington Grove | AT&T Mobility | Wireless | 0 |
| 240-520 | Hagerstown | T-Mobile | Wireless | 0 |
| 240-521 | Laurel | AT&T Mobility | Wireless | 0 |
| 240-522 | Cumberland | T-Mobile (Metro) | Wireless | 0 |
| 240-523 | La Plata | Verizon Business | VoIP | 0 |
| 240-524 | Laurel | Peerless Network | VoIP | 0 |
| 240-525 | Peerless Network | VoIP | 0 | |
| 240-526 | Leonardtown | Peerless Network | VoIP | 0 |
| 240-527 | Hagerstown | Verizon | Landline | 0 |
| 240-528 | Hughesvl | Lumen (Level 3) | VoIP | 0 |
| 240-529 | Frederick | Verizon | Landline | 0 |
| 240-530 | Waldorf | Core Communications | Landline | 0 |
| 240-531 | Washington Grove | Telnyx | VoIP | 0 |
| 240-532 | Washington Grove | Verizon Wireless | Wireless | 0 |
| 240-533 | Washington Grove | AT&T | VoIP | 0 |
| 240-534 | Washington Grove | Verizon Wireless | Wireless | 0 |
| 240-535 | Washington Grove | AT&T Mobility | Wireless | 0 |
| 240-536 | Peerless Network | VoIP | 0 | |
| 240-537 | Hagerstown | Atlantech Online | Landline | 0 |
| 240-538 | Leonardtown | Verizon Business | VoIP | 0 |
| 240-539 | Washington Grove | Peerless Network | VoIP | 0 |
| 240-540 | The Voice Application Network | Landline | 0 | |
| 240-541 | Washington Grove | AT&T Mobility | Wireless | 0 |
| 240-542 | Windstream (PAETEC) | VoIP | 0 | |
| 240-543 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-544 | Windstream (PAETEC) | VoIP | 0 | |
| 240-545 | Windstream (PAETEC) | VoIP | 0 | |
| 240-546 | Washington | Windstream (PAETEC) | VoIP | 0 |
| 240-547 | Laurel | Lumen (Level 3) | VoIP | 0 |
| 240-548 | Core Communications | Landline | 0 | |
| 240-549 | Frederick | Verizon Wireless | Wireless | 0 |
| 240-550 | Washington | AT&T Mobility | Wireless | 0 |
| 240-551 | Washington | AT&T Mobility | Wireless | 0 |
| 240-552 | Washington | AT&T Mobility | Wireless | 0 |
| 240-553 | Verizon Business | VoIP | 0 | |
| 240-554 | Laurel | Verizon Business | VoIP | 0 |
| 240-556 | Windstream (PAETEC) | VoIP | 0 | |
| 240-557 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-558 | Washington | Windstream (PAETEC) | VoIP | 0 |
| 240-559 | Verizon Business | VoIP | 0 | |
| 240-560 | Washington | Verizon Business | VoIP | 0 |
| 240-561 | Leonardtown | Verizon Wireless | Wireless | 0 |
| 240-562 | Gaithersburg | Verizon Business | VoIP | 0 |
| 240-563 | Washington Grove | Onvoy (Sinch) | VoIP | 0 |
| 240-564 | Laurel | T-Mobile | Wireless | 0 |
| 240-565 | Laurel | T-Mobile | Wireless | 0 |
| 240-566 | Frederick | Verizon | Landline | 0 |
| 240-567 | Washington | Verizon | Landline | 0 |
| 240-568 | Laurel | Verizon | Landline | 0 |
| 240-569 | Bandwidth | VoIP | 0 | |
| 240-570 | Onvoy (Sinch) | VoIP | 0 | |
| 240-571 | Laurel | Verizon Wireless | Wireless | 0 |
| 240-572 | Leonardtown | Verizon Wireless | Wireless | 0 |
| 240-573 | Lumen (Level 3) | VoIP | 0 | |
| 240-574 | Friendsville | AT&T Mobility | Wireless | 0 |
| 240-575 | Frederick | Lumen (Level 3) | VoIP | 0 |
| 240-576 | Hagerstown | Vonage | VoIP | 0 |
| 240-577 | Leonardtown | Verizon Wireless | Wireless | 0 |
| 240-578 | Frederick | Verizon Wireless | Wireless | 0 |
| 240-579 | T-Mobile | Wireless | 0 | |
| 240-580 | Cumberland | T-Mobile | Wireless | 0 |
| 240-581 | Laurel | Windstream (PAETEC) | VoIP | 0 |
| 240-582 | Washington Grove | Verizon | Landline | 0 |
| 240-583 | Laurel | Verizon | Landline | 0 |
| 240-584 | Laurel | T-Mobile | Wireless | 0 |
| 240-585 | Waldorf | Verizon Wireless | Wireless | 0 |
| 240-586 | Frederick | Verizon | Landline | 0 |
| 240-587 | Leonardtown | Verizon Wireless | Wireless | 0 |
| 240-588 | Grantsville | Verizon Business | VoIP | 0 |
| 240-589 | Mccoole | AT&T Mobility | Wireless | 0 |
| 240-590 | Washington | T-Mobile (Metro) | Wireless | 0 |
| 240-591 | Hagerstown | Shentel Communications | Landline | 0 |
| 240-592 | Verizon | Landline | 0 | |
| 240-593 | Laurel | T-Mobile | Wireless | 0 |
| 240-594 | Bittinger | Bandwidth | VoIP | 0 |
| 240-595 | Washington Grove | Verizon Wireless | Wireless | 0 |
| 240-596 | Core Communications | Landline | 0 | |
| 240-597 | Gaithersburg | Peerless Network | VoIP | 0 |
| 240-598 | Hughesvl | Core Communications | Landline | 0 |
| 240-599 | Washington | Lumen (Level 3) | VoIP | 0 |
| 240-600 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-601 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-602 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-603 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-604 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-605 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-606 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-607 | Waldorf | Lumen (Level 3) | VoIP | 0 |
| 240-608 | Frederick | Nuso | Landline | 0 |
| 240-609 | Cumberland | AT&T Mobility | Wireless | 0 |
| 240-610 | Washington Grove | Core Communications | Landline | 0 |
| 240-612 | Washington Grove | Lumen (Level 3) | VoIP | 0 |
| 240-613 | Washington Grove | Windstream (PAETEC) | VoIP | 0 |
| 240-614 | Washington | T-Mobile (Metro) | Wireless | 0 |
| 240-615 | Washington Grove | T-Mobile (Metro) | Wireless | 0 |
| 240-616 | Verizon Business | VoIP | 0 | |
| 240-617 | Highfield | Bandwidth | VoIP | 0 |
| 240-618 | Washington | Verizon Wireless | Wireless | 0 |
| 240-619 | Washington Grove | Comcast (Xfinity) | VoIP | 0 |
| 240-620 | Washington | Verizon Business | VoIP | 0 |
| 240-621 | Washington | Bandwidth | VoIP | 0 |
| 240-622 | La Plata | Core Communications | Landline | 0 |
| 240-623 | Washington Grove | Bandwidth | VoIP | 0 |
| 240-624 | Verizon | Landline | 0 | |
| 240-625 | Hagerstown | T-Mobile (Metro) | Wireless | 0 |
| 240-626 | Frederick | T-Mobile | Wireless | 0 |
| 240-627 | Washington | Lumen (Level 3) | VoIP | 0 |
| 240-628 | Core Communications | Landline | 0 | |
| 240-629 | Frederick | Verizon | Landline | 0 |
| 240-630 | Washington Grove | Bandwidth | VoIP | 0 |
| 240-631 | Gaithersburg | Verizon | Landline | 0 |
| 240-632 | Gaithersburg | Verizon | Landline | 0 |
| 240-633 | Hughesvl | Baltimore-Washington Telephone... | Landline | 0 |
| 240-634 | Ridgely | Core Communications | Landline | 0 |
| 240-635 | Core Communications | Landline | 0 | |
| 240-636 | Laurel | T-Mobile | Wireless | 0 |
| 240-637 | Washington Grove | Core Communications | Landline | 0 |
| 240-638 | Washington Grove | Lumen (Level 3) | VoIP | 0 |
| 240-639 | Laurel | Core Communications | Landline | 0 |
| 240-640 | Waldorf | AT&T Mobility | Wireless | 0 |
| 240-641 | Washington Grove | Peerless Network | VoIP | 0 |
| 240-642 | Washington | Advanced Telecom Solutions | Landline | 0 |
| 240-643 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-644 | Washington Grove | Verizon Business | VoIP | 0 |
| 240-645 | Washington Grove | Verizon Business | VoIP | 0 |
| 240-646 | Laurel | Windstream (PAETEC) | VoIP | 0 |
| 240-647 | Clear Spring | Core Communications | Landline | 0 |
| 240-648 | Keedysville | Core Communications | Landline | 0 |
| 240-649 | Smithsburg | Core Communications | Landline | 0 |
| 240-650 | Washington Grove | Onvoy (Sinch) | VoIP | 1 |
| 240-651 | Frederick | Verizon Wireless | Wireless | 0 |
| 240-652 | Verizon Business | VoIP | 0 | |
| 240-653 | Laurel | Peerless Network | VoIP | 2 |
| 240-654 | Gaithersburg | AT&T Mobility | Wireless | 0 |
| 240-655 | Kitzmiller | Onvoy (Sinch) | VoIP | 0 |
| 240-656 | Frederick | AT&T Mobility | Wireless | 0 |
| 240-657 | Frostburg | Verizon Business | VoIP | 0 |
| 240-658 | Gaithersburg | Vonage | VoIP | 0 |
| 240-659 | T-Mobile | Wireless | 0 | |
| 240-660 | Washington | Verizon Wireless | Wireless | 0 |
| 240-661 | Baltimore-Washington Telephone... | Landline | 0 | |
| 240-662 | Washington Grove | Verizon | Landline | 0 |
| 240-663 | Middletown | T-Mobile | Wireless | 0 |
| 240-664 | Cumberland | Peerless Network | VoIP | 0 |
| 240-665 | Washington | T-Mobile | Wireless | 0 |
| 240-666 | Nanjemoy | Onvoy (Sinch) | VoIP | 0 |
| 240-667 | Washington Grove | Lumen (Level 3) | VoIP | 0 |
| 240-668 | Starpower Communications | Landline | 0 | |
| 240-669 | Washington | Comcast (Xfinity) | VoIP | 0 |
| 240-670 | Washington Grove | Bandwidth | VoIP | 0 |
| 240-671 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-672 | Washington | Verizon Wireless | Wireless | 0 |
| 240-673 | Washington Grove | Bandwidth | VoIP | 3 |
| 240-674 | Frederick | T-Mobile (Metro) | Wireless | 0 |
| 240-675 | Myersville | AT&T Mobility | Wireless | 0 |
| 240-676 | Washington Grove | Verizon Wireless | Wireless | 0 |
| 240-677 | Washington Grove | Verizon Business | VoIP | 0 |
| 240-678 | Washington Grove | Verizon Wireless | Wireless | 0 |
| 240-679 | Friendsville | Core Communications | Landline | 0 |
| 240-680 | Frederick | Peerless Network | VoIP | 0 |
| 240-681 | Windstream (PAETEC) | VoIP | 0 | |
| 240-682 | Waldorf | Starpower Communications | Landline | 0 |
| 240-683 | Gaithersburg | Verizon | Landline | 0 |
| 240-684 | Verizon | Landline | 0 | |
| 240-685 | Lumen (Level 3) | VoIP | 0 | |
| 240-686 | Gaithersburg | Verizon | Landline | 0 |
| 240-687 | Washington Grove | Verizon Wireless | Wireless | 0 |
| 240-688 | Washington Grove | Verizon Wireless | Wireless | 0 |
| 240-689 | Csc Wireless | Wireless | 0 | |
| 240-690 | Gaithersburg | AT&T | VoIP | 0 |
| 240-691 | Washington Grove | Lumen (Level 3) | VoIP | 0 |
| 240-692 | Grantsville | Lumen (Level 3) | VoIP | 0 |
| 240-693 | Walkersville | Peerless Network | VoIP | 0 |
| 240-694 | Washington Grove | Verizon | Landline | 0 |
| 240-695 | Washington Grove | Verizon | Landline | 0 |
| 240-696 | Washington Grove | Lumen (Level 3) | VoIP | 0 |
| 240-697 | Coretel Maryland | Landline | 0 | |
| 240-698 | Myersville | T-Mobile | Wireless | 0 |
| 240-699 | Buckeystn | Verizon | Landline | 0 |
| 240-701 | Washington Grove | AT&T Mobility | Wireless | 0 |
| 240-702 | Gaithersburg | Verizon Wireless | Wireless | 0 |
| 240-703 | T-Mobile | Wireless | 0 | |
| 240-704 | Washington Grove | AT&T Mobility | Wireless | 0 |
| 240-705 | Washington Grove | AT&T Mobility | Wireless | 0 |
| 240-706 | Washington Grove | AT&T Mobility | Wireless | 0 |
| 240-707 | Hagerstown | AT&T Mobility | Wireless | 0 |
| 240-708 | Laurel | Lumen (Level 3) | VoIP | 0 |
| 240-709 | Laurel | T-Mobile | Wireless | 0 |
| 240-710 | Frederick | Verizon Business | VoIP | 0 |
| 240-712 | Laurel | Verizon Wireless | Wireless | 0 |
| 240-713 | Laurel | Peerless Network | VoIP | 0 |
| 240-714 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-715 | Washington | Lumen (Level 3) | VoIP | 0 |
| 240-716 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-717 | Leonardtown | Onvoy (Sinch) | VoIP | 0 |
| 240-718 | Verizon Business | VoIP | 0 | |
| 240-719 | Washington Grove | Verizon Wireless | Wireless | 0 |
| 240-720 | Gaithersburg | Lumen (Level 3) | VoIP | 0 |
| 240-721 | Washington Grove | Verizon | Landline | 0 |
| 240-722 | T-Mobile | Wireless | 0 | |
| 240-723 | Washington Grove | Verizon Wireless | Wireless | 0 |
| 240-724 | Washington Grove | Windstream (PAETEC) | VoIP | 0 |
| 240-725 | Verizon | Landline | 0 | |
| 240-726 | Washington Grove | Nuso | Landline | 0 |
| 240-727 | Cumberland | AT&T Mobility | Wireless | 0 |
| 240-728 | Washington | Vonage | VoIP | 0 |
| 240-729 | T-Mobile | Wireless | 0 | |
| 240-730 | Hagerstown | Hd Carrier | Landline | 0 |
| 240-731 | Washington | AT&T Mobility | Wireless | 0 |
| 240-732 | Mount Airy | AT&T Mobility | Wireless | 0 |
| 240-733 | Fractel | VoIP | 0 | |
| 240-734 | Smithsburg | Bandwidth | VoIP | 0 |
| 240-735 | Brunswick | Nuso | Landline | 0 |
| 240-736 | Laurel | AT&T Mobility | Wireless | 0 |
| 240-737 | Washington Grove | Windstream (PAETEC) | VoIP | 0 |
| 240-738 | Hancock | Verizon Wireless | Wireless | 0 |
| 240-739 | Frederick | IP Horizon | VoIP | 0 |
| 240-740 | Washington | Atlantech Online | Landline | 0 |
| 240-741 | Frederick | Airespring | Landline | 0 |
| 240-742 | Nuso | Landline | 0 | |
| 240-743 | Washington Grove | Verizon Wireless | Wireless | 0 |
| 240-744 | Washington Grove | Lumen (Level 3) | VoIP | 0 |
| 240-745 | Verizon Business | VoIP | 0 | |
| 240-746 | AT&T | Landline | 0 | |
| 240-747 | Washington | Windstream (PAETEC) | VoIP | 0 |
| 240-748 | Washington Grove | AT&T | VoIP | 0 |
| 240-749 | Laurel | Verizon Wireless | Wireless | 0 |
| 240-750 | Gaithersburg | AT&T Mobility | Wireless | 0 |
| 240-751 | Gaithersburg | Lumen (Level 3) | VoIP | 0 |
| 240-752 | Washington Grove | Lumen (Level 3) | VoIP | 0 |
| 240-753 | Washington | Lumen (Level 3) | VoIP | 0 |
| 240-754 | Waldorf | Lumen (Level 3) | VoIP | 0 |
| 240-755 | Laurel | Comcast (Xfinity) | VoIP | 0 |
| 240-756 | Washington | T-Mobile | Wireless | 0 |
| 240-757 | Peerless Network | VoIP | 0 | |
| 240-758 | Laurel | AT&T Mobility | Wireless | 0 |
| 240-759 | Onvoy (Sinch) | VoIP | 0 | |
| 240-760 | Washington Grove | Verizon Wireless | Wireless | 0 |
| 240-761 | Laurel | AT&T Mobility | Wireless | 0 |
| 240-762 | Washington Grove | Verizon Wireless | Wireless | 0 |
| 240-763 | Bandwidth | VoIP | 0 | |
| 240-764 | Washington Grove | Verizon Business | VoIP | 0 |
| 240-765 | Washington Grove | Verizon Business | VoIP | 0 |
| 240-766 | Washington Grove | Verizon Business | VoIP | 0 |
| 240-767 | Washington Grove | Windstream (PAETEC) | VoIP | 0 |
| 240-768 | Nanjemoy | Onvoy (Sinch) | VoIP | 0 |
| 240-769 | Keedysville | Bandwidth | VoIP | 3 |
| 240-770 | Washington Grove | Comcast (Xfinity) | VoIP | 0 |
| 240-771 | Poolesville | Onvoy (Sinch) | VoIP | 0 |
| 240-772 | Frederick | Verizon Wireless | Wireless | 0 |
| 240-773 | Washington | Verizon | Landline | 0 |
| 240-774 | Lonaconing | Bandwidth | VoIP | 0 |
| 240-775 | Westernport | Bandwidth | VoIP | 0 |
| 240-776 | La Plata | Lumen (Level 3) | VoIP | 0 |
| 240-777 | Washington | Verizon | Landline | 0 |
| 240-778 | Washington | Verizon Business | VoIP | 0 |
| 240-779 | Windstream (PAETEC) | VoIP | 0 | |
| 240-780 | Gaithersburg | Lumen (Level 3) | VoIP | 0 |
| 240-781 | Washington Grove | Verizon Business | VoIP | 0 |
| 240-782 | Onvoy (Sinch) | VoIP | 1 | |
| 240-783 | Washington Grove | Mte Paging Network | Pager | 0 |
| 240-784 | Myersville | T-Mobile | Wireless | 0 |
| 240-785 | Oakland | Bandwidth | VoIP | 0 |
| 240-786 | Laurel | Lumen (Level 3) | VoIP | 0 |
| 240-787 | Lumen (Level 3) | VoIP | 0 | |
| 240-788 | Washington Grove | Lumen (Level 3) | VoIP | 0 |
| 240-789 | Washington | Advanced Telecom Solutions | Landline | 0 |
| 240-790 | Lumen (Level 3) | VoIP | 0 | |
| 240-791 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-792 | Frederick | T-Mobile | Wireless | 0 |
| 240-793 | Gaithersburg | T-Mobile (Metro) | Wireless | 0 |
| 240-794 | Lumen (Level 3) | VoIP | 0 | |
| 240-795 | Washington Grove | Verizon Wireless | Wireless | 0 |
| 240-796 | Washington | T-Mobile | Wireless | 0 |
| 240-797 | T-Mobile | Wireless | 0 | |
| 240-798 | Gaithersburg | Onvoy (Sinch) | VoIP | 0 |
| 240-799 | Fractel | VoIP | 1 | |
| 240-800 | Washington Grove | Core Communications | Landline | 0 |
| 240-801 | Gaithersburg | Verizon Wireless | Wireless | 0 |
| 240-802 | Washington Grove | Nuso | Landline | 0 |
| 240-803 | Cumberland | AT&T Mobility | Wireless | 0 |
| 240-804 | Onvoy (Sinch) | VoIP | 0 | |
| 240-805 | Gaithersburg | Verizon Wireless | Wireless | 0 |
| 240-806 | Indian Head | Peerless Network | VoIP | 1 |
| 240-807 | Cumberland | T-Mobile | Wireless | 0 |
| 240-808 | Leonardtown | Verizon Wireless | Wireless | 0 |
| 240-809 | Smithsburg | Onvoy (Sinch) | VoIP | 0 |
| 240-810 | Washington | T-Mobile | Wireless | 0 |
| 240-812 | Poolesville | Lumen (Level 3) | VoIP | 1 |
| 240-813 | Gaithersburg | Windstream (PAETEC) | VoIP | 0 |
| 240-814 | Laurel | Verizon Wireless | Wireless | 0 |
| 240-815 | Frederick | Verizon Wireless | Wireless | 0 |
| 240-816 | Keedysville | Bandwidth | VoIP | 0 |
| 240-817 | T-Mobile | Wireless | 0 | |
| 240-818 | Myersville | Verizon Wireless | Wireless | 0 |
| 240-819 | Williamsport | Onvoy (Sinch) | VoIP | 0 |
| 240-820 | Onvoy (Sinch) | VoIP | 0 | |
| 240-821 | Washington Grove | Windstream (PAETEC) | VoIP | 0 |
| 240-822 | New Market | Onvoy (Sinch) | VoIP | 0 |
| 240-823 | Verizon Business | VoIP | 0 | |
| 240-824 | Frostburg | Onvoy (Sinch) | VoIP | 0 |
| 240-825 | Washington Grove | Verizon Wireless | Wireless | 0 |
| 240-826 | Washington | Verizon | Landline | 0 |
| 240-827 | Lonaconing | Onvoy (Sinch) | VoIP | 0 |
| 240-828 | Washington Grove | Telnyx | VoIP | 2 |
| 240-829 | Emmitsburg | Coretel Maryland | Landline | 0 |
| 240-830 | Washington Grove | Comcast (Xfinity) | VoIP | 0 |
| 240-831 | Frederick | Onvoy (Sinch) | VoIP | 0 |
| 240-832 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-833 | Washington | Verizon Business | VoIP | 0 |
| 240-834 | Kitzmiller | Onvoy (Sinch) | VoIP | 0 |
| 240-835 | Clear Spring | Onvoy (Sinch) | VoIP | 0 |
| 240-836 | Mt Savage | Onvoy (Sinch) | VoIP | 0 |
| 240-837 | Hughesvl | Verizon Business | VoIP | 0 |
| 240-838 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-839 | Washington Grove | Verizon Wireless | Wireless | 0 |
| 240-840 | Frederick | Onvoy (Sinch) | VoIP | 1 |
| 240-841 | Laurel | Verizon Business | VoIP | 0 |
| 240-842 | Verizon Business | VoIP | 0 | |
| 240-843 | Verizon Business | VoIP | 0 | |
| 240-844 | Ridgely | Onvoy (Sinch) | VoIP | 0 |
| 240-845 | Verizon Business | VoIP | 0 | |
| 240-846 | Washington | Verizon Business | VoIP | 0 |
| 240-847 | Washington Grove | Onvoy (Sinch) | VoIP | 0 |
| 240-848 | Gaithersburg | T-Mobile (Metro) | Wireless | 0 |
| 240-849 | Hagerstown | AT&T | VoIP | 0 |
| 240-850 | Hagerstown | Peerless Network | VoIP | 0 |
| 240-851 | Mccoole | Onvoy (Sinch) | VoIP | 0 |
| 240-852 | Myersville | T-Mobile | Wireless | 0 |
| 240-853 | Laurel | Bandwidth | VoIP | 0 |
| 240-854 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-855 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-856 | Laurel | Verizon Wireless | Wireless | 0 |
| 240-857 | Washington Grove | Lumen (Level 3) | VoIP | 0 |
| 240-858 | Washington Grove | Verizon Wireless | Wireless | 2 |
| 240-859 | Onvoy (Sinch) | VoIP | 3 | |
| 240-860 | Cumberland | Peerless Network | VoIP | 0 |
| 240-861 | T-Mobile | Wireless | 0 | |
| 240-862 | Mt Savage | Onvoy (Sinch) | VoIP | 0 |
| 240-863 | Washington Grove | Lumen (Level 3) | VoIP | 0 |
| 240-864 | Washington | Windstream (PAETEC) | VoIP | 0 |
| 240-865 | Lumen (Level 3) | VoIP | 0 | |
| 240-866 | Hagerstown | Terra Nova Telecom | Landline | 0 |
| 240-867 | Washington Grove | Commio | VoIP | 0 |
| 240-868 | Washington | Windstream (PAETEC) | VoIP | 0 |
| 240-869 | Washington | T-Mobile | Wireless | 0 |
| 240-870 | Middletown | Onvoy (Sinch) | VoIP | 0 |
| 240-871 | T-Mobile | Wireless | 0 | |
| 240-872 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-873 | Buckeystn | Onvoy (Sinch) | VoIP | 0 |
| 240-874 | Thurmont | Onvoy (Sinch) | VoIP | 0 |
| 240-875 | Mount Airy | Onvoy (Sinch) | VoIP | 0 |
| 240-876 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-877 | Frederick | Onvoy (Sinch) | VoIP | 0 |
| 240-878 | Hagerstown | Commio | VoIP | 0 |
| 240-879 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-880 | Washington | Lumen (Level 3) | VoIP | 0 |
| 240-881 | Bandwidth | VoIP | 4 | |
| 240-882 | Washington Grove | T-Mobile (Metro) | Wireless | 0 |
| 240-883 | Lumen (Level 3) | VoIP | 0 | |
| 240-884 | Onvoy (Sinch) | VoIP | 0 | |
| 240-885 | Washington | Onvoy (Sinch) | VoIP | 0 |
| 240-886 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-887 | T-Mobile | Wireless | 0 | |
| 240-888 | Washington | AT&T Mobility | Wireless | 0 |
| 240-889 | Washington | T-Mobile | Wireless | 0 |
| 240-890 | Washington Grove | Verizon Wireless | Wireless | 0 |
| 240-891 | Lumen (Level 3) | VoIP | 0 | |
| 240-892 | Lumen (Level 3) | VoIP | 0 | |
| 240-893 | Washington Grove | AT&T Mobility | Wireless | 0 |
| 240-894 | Boost Subscriberco | Landline | 0 | |
| 240-895 | Verizon | Landline | 0 | |
| 240-896 | Hagerstown | Boost Subscriberco | Landline | 0 |
| 240-897 | Washington | Lumen (Level 3) | VoIP | 1 |
| 240-898 | Washington Grove | Lumen (Level 3) | VoIP | 0 |
| 240-899 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-900 | Washington Grove | Onvoy (Sinch) | VoIP | 0 |
| 240-901 | La Plata | Lumen (CenturyLink) | Landline | 0 |
| 240-902 | Twilio | VoIP | 0 | |
| 240-903 | Indian Head | Comcast (Xfinity) | VoIP | 0 |
| 240-904 | Laurel | Verizon Wireless | Wireless | 0 |
| 240-905 | T-Mobile (Metro) | Wireless | 0 | |
| 240-906 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-907 | Washington | Verizon Wireless | Wireless | 0 |
| 240-908 | Walkersville | Onvoy (Sinch) | VoIP | 0 |
| 240-909 | Laurel | T-Mobile (Metro) | Wireless | 0 |
| 240-910 | Frederick | Onvoy (Sinch) | VoIP | 0 |
| 240-912 | Gaithersburg | Windstream (PAETEC) | VoIP | 0 |
| 240-913 | Onvoy (Sinch) | VoIP | 0 | |
| 240-914 | Highfield | Boost Subscriberco | Landline | 0 |
| 240-915 | New Market | Telnyx | VoIP | 0 |
| 240-916 | Cumberland | T-Mobile | Wireless | 0 |
| 240-917 | Laurel | AT&T Mobility | Wireless | 0 |
| 240-918 | T-Mobile | Wireless | 0 | |
| 240-919 | T-Mobile | Wireless | 0 | |
| 240-920 | Cumberland | Lumen (Level 3) | VoIP | 0 |
| 240-921 | Washington | T-Mobile | Wireless | 0 |
| 240-922 | Washington | Fractel | VoIP | 0 |
| 240-923 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-924 | Mount Airy | Bandwidth | VoIP | 0 |
| 240-925 | Leonardtown | Verizon Wireless | Wireless | 0 |
| 240-926 | Hughesvl | T-Mobile | Wireless | 0 |
| 240-927 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-928 | Myersville | AT&T Mobility | Wireless | 0 |
| 240-929 | Windstream (PAETEC) | VoIP | 0 | |
| 240-930 | Laurel | Verizon Wireless | Wireless | 0 |
| 240-931 | Frederick | Nuso | Landline | 0 |
| 240-932 | Bandwidth | VoIP | 0 | |
| 240-933 | Buckeystn | Ton80 Communications | VoIP | 0 |
| 240-934 | Middletown | Ton80 Communications | VoIP | 0 |
| 240-935 | Laurel | Verizon Wireless | Wireless | 0 |
| 240-936 | T-Mobile | Wireless | 0 | |
| 240-937 | Gaithersburg | Bandwidth | VoIP | 0 |
| 240-938 | T-Mobile | Wireless | 0 | |
| 240-939 | Washington | Bandwidth | VoIP | 0 |
| 240-940 | Washington Grove | Bandwidth | VoIP | 0 |
| 240-941 | Washington Grove | Bandwidth | VoIP | 0 |
| 240-942 | Bittinger | Onvoy (Sinch) | VoIP | 0 |
| 240-943 | Frostburg | Comcast (Xfinity) | VoIP | 0 |
| 240-944 | Westernport | Onvoy (Sinch) | VoIP | 0 |
| 240-945 | Washington Grove | Onvoy (Sinch) | VoIP | 0 |
| 240-946 | Fractel | VoIP | 0 | |
| 240-947 | Myersville | AT&T Mobility | Wireless | 0 |
| 240-948 | Leonardtown | Bandwidth | VoIP | 0 |
| 240-949 | Washington | Windstream (PAETEC) | VoIP | 0 |
| 240-951 | Hagerstown | AT&T | VoIP | 0 |
| 240-952 | Hagerstown | AT&T | VoIP | 0 |
| 240-953 | Hagerstown | AT&T | VoIP | 0 |
| 240-954 | Hagerstown | AT&T | VoIP | 0 |
| 240-955 | La Plata | Bandwidth | VoIP | 0 |
| 240-956 | Washington Grove | Onvoy (Sinch) | VoIP | 0 |
| 240-957 | Bandwidth | VoIP | 0 | |
| 240-960 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-961 | Poolesville | Verizon Wireless | Wireless | 0 |
| 240-962 | Laurel | Verizon Wireless | Wireless | 0 |
| 240-963 | Washington Grove | Bandwidth | VoIP | 0 |
| 240-964 | Cumberland | Verizon | Landline | 0 |
| 240-965 | Windstream (PAETEC) | VoIP | 1 | |
| 240-966 | Washington | Ton80 Communications | VoIP | 0 |
| 240-967 | Cumberland | Verizon Wireless | Wireless | 0 |
| 240-968 | Laurel | AT&T Mobility | Wireless | 0 |
| 240-969 | Walkersville | Commio | VoIP | 0 |
| 240-970 | Washington | Onvoy (Sinch) | VoIP | 0 |
| 240-971 | Frederick | Lumen (CenturyLink) | Landline | 0 |
| 240-972 | Laurel | Baltimore-Washington Telephone... | Landline | 0 |
| 240-973 | Washington | T-Mobile (Metro) | Wireless | 0 |
| 240-974 | Washington | AT&T Mobility | Wireless | 0 |
| 240-975 | Laurel | Verizon Wireless | Wireless | 0 |
| 240-977 | Washington Grove | Onvoy (Sinch) | VoIP | 0 |
| 240-978 | T-Mobile | Wireless | 0 | |
| 240-979 | Cumberland | Lumen (Level 3) | VoIP | 0 |
| 240-980 | Leonardtown | Verizon Wireless | Wireless | 0 |
| 240-981 | Gaithersburg | Nuso | Landline | 0 |
| 240-982 | Gaithersburg | Onvoy (Sinch) | VoIP | 0 |
| 240-983 | Hagerstown | Nuso | Landline | 0 |
| 240-984 | New Market | AT&T | VoIP | 0 |
| 240-985 | Williamsport | Lumen (CenturyLink) | Landline | 0 |
| 240-986 | Nanjemoy | Onvoy (Sinch) | VoIP | 0 |
| 240-987 | Washington | AT&T Mobility | Wireless | 0 |
| 240-988 | Washington Grove | T-Mobile | Wireless | 0 |
| 240-989 | Myersville | AT&T Mobility | Wireless | 0 |
| 240-990 | Laurel | AT&T Mobility | Wireless | 0 |
| 240-991 | T-Mobile | Wireless | 0 | |
| 240-992 | Washington | T-Mobile | Wireless | 0 |
| 240-993 | Indian Head | Verizon Business | VoIP | 0 |
| 240-994 | Washington | Verizon Wireless | Wireless | 0 |
| 240-995 | Onvoy (Sinch) | VoIP | 0 | |
| 240-996 | Brunswick | Lumen (Level 3) | VoIP | 0 |
| 240-997 | Washington Grove | Verizon Wireless | Wireless | 0 |
| 240-998 | Hancock | Lumen (CenturyLink) | Landline | 0 |
Area code 240 questions
Where is area code 240?
Area code 240 is in Maryland. Its biggest rate centers are Washington Grove, Washington, Laurel, Frederick, Gaithersburg.
What time zone is area code 240?
Area code 240 is in the Eastern time zone.
Is a call from area code 240 a scam?
An area code alone can't tell you. Scammers use and spoof numbers in every area code. 35 240 numbers have been flagged on ShadyCall. Look up the full number to see its reports and FTC/FCC complaints.
What carriers use area code 240?
Of its 785 exchanges, the most were assigned to T-Mobile, Verizon Wireless, AT&T Mobility. Numbers can be ported to any carrier, so the exchange shows the original carrier only.
What area codes overlay 240?
240 shares its area with 227, 301. In an overlay, new numbers get the newer codes and you dial all ten digits.