240 Area Code Phone Numbers
Location: Maryland
| Prefix | County | City | Carrier |
|---|---|---|---|
| 1-240-201 | District of Columbia | Washington | Peerless Network Of Maryland, Llc |
| 1-240-202 | |||
| 1-240-204 | |||
| 1-240-205 | |||
| 1-240-206 | |||
| 1-240-207 | |||
| 1-240-208 | |||
| 1-240-209 | |||
| 1-240-210 | |||
| 1-240-213 | District of Columbia | Washington | Peerless Network Of Maryland, Llc |
| 1-240-215 | |||
| 1-240-216 | |||
| 1-240-217 | |||
| 1-240-218 | |||
| 1-240-219 | Fairfax | Vienna | Peerless Network Of Maryland, Llc |
| 1-240-220 | District of Columbia | Washington | Peerless Network Of Maryland, Llc |
| 1-240-222 | |||
| 1-240-223 | |||
| 1-240-224 | Howard | Annapolis Junction | Cellco Partnership Dba Verizon Wireless - Md |
| 1-240-226 | |||
| 1-240-229 | |||
| 1-240-230 | Global Crossing Local Services, Inc.-md | ||
| 1-240-231 | |||
| 1-240-232 | District of Columbia | Washington | Broadwing Communications. Llc - Md |
| 1-240-233 | District of Columbia | Washington | Teleport Communications America, Llc - Dc |
| 1-240-234 | |||
| 1-240-237 | |||
| 1-240-240 | |||
| 1-240-241 | Prince Georges | Lanham | Starpower Communications, Llc - Md |
| 1-240-242 | |||
| 1-240-243 | |||
| 1-240-244 | District of Columbia | Washington | Starpower Communications, Llc - Md |
| 1-240-245 | District of Columbia | Washington | Starpower Communications, Llc - Md |
| 1-240-246 | |||
| 1-240-247 | |||
| 1-240-248 | District of Columbia | Washington | Peerless Network Of Maryland, Llc |
| 1-240-249 | District of Columbia | Washington | Teleport Communications America, Llc - Dc |
| 1-240-252 | |||
| 1-240-253 | |||
| 1-240-254 | District of Columbia | Washington | Teleport Communications America, Llc - Dc |
| 1-240-255 | District of Columbia | Washington | Peerless Network Of Maryland, Llc |
| 1-240-256 | District of Columbia | Washington | Teleport Communications America, Llc - Dc |
| 1-240-257 | |||
| 1-240-258 | |||
| 1-240-259 | |||
| 1-240-260 | |||
| 1-240-261 | Fairfax | Vienna | Neutral Tandem-maryland, Llc - Md |
| 1-240-262 | |||
| 1-240-263 | |||
| 1-240-264 | |||
| 1-240-265 | |||
| 1-240-266 | District of Columbia | Washington | Peerless Network Of Maryland, Llc |
| 1-240-267 | |||
| 1-240-268 | |||
| 1-240-269 | District of Columbia | Washington | Peerless Network Of Maryland, Llc |
| 1-240-270 | District of Columbia | Washington | Cellco Partnership Dba Verizon Wireless - Md |
| 1-240-271 | |||
| 1-240-272 | |||
| 1-240-273 | |||
| 1-240-274 | |||
| 1-240-275 | |||
| 1-240-277 | |||
| 1-240-280 | |||
| 1-240-281 | |||
| 1-240-283 | |||
| 1-240-284 | Washington | Hagerstown | Level 3 Communications, Llc - Md |
| 1-240-286 | |||
| 1-240-288 | Washington | Hagerstown | Comcast Phone Of Northern Maryland, Inc. - Md |
| 1-240-291 | |||
| 1-240-292 | |||
| 1-240-293 | |||
| 1-240-297 | Fairfax | McLean | Level 3 Communications, Llc - Md |
| 1-240-299 | |||
| 1-240-300 | |||
| 1-240-301 | |||
| 1-240-302 | |||
| 1-240-303 | Fairfax | Herndon | Cavalier Telephone Mid-atlantic, Llc - Md |
| 1-240-304 | |||
| 1-240-305 | District of Columbia | Washington | Sprint Spectrum L.p. |
| 1-240-306 | |||
| 1-240-307 | Washington | Hagerstown | At&t Local |
| 1-240-308 | |||
| 1-240-309 | |||
| 1-240-310 | |||
| 1-240-312 | Fairfax | Herndon | Cavalier Telephone Mid-atlantic, Llc - Md |
| 1-240-313 | |||
| 1-240-314 | Montgomery | Rockville | Verizon Maryland, Inc. |
| 1-240-315 | Frederick | Frederick | Verizon Maryland, Inc. |
| 1-240-316 | |||
| 1-240-318 | Manassas City | Manassas | Verizon Maryland, Inc. |
| 1-240-319 | |||
| 1-240-320 | |||
| 1-240-321 | Allegany | Cumberland | Uscoc Of Cumberland, Inc. Dba United States Cel Md |
| 1-240-324 | |||
| 1-240-326 | Fairfax | Herndon | Cavalier Telephone Mid-atlantic, Llc - Md |
| 1-240-328 | |||
| 1-240-329 | |||
| 1-240-330 | |||
| 1-240-331 | District of Columbia | Washington | Peerless Network Of Maryland, Llc |
| 1-240-332 | |||
| 1-240-334 | Global Crossing Local Services, Inc.-md | ||
| 1-240-335 | Fairfax | Herndon | Cavalier Telephone Mid-atlantic, Llc - Md |
| 1-240-337 | |||
| 1-240-338 | Howard | Annapolis Junction | Cellco Partnership Dba Verizon Wireless - Md |
| 1-240-339 | District of Columbia | Washington | Cavalier East Llc - Md |
| 1-240-340 | |||
| 1-240-341 | Frederick | Frederick | Mci Worldcom Communications, Inc. - Md |
| 1-240-342 | |||
| 1-240-343 | Washington | Hagerstown | Cellco Partnership Dba Verizon Wireless - Md |
| 1-240-344 | |||
| 1-240-345 | Baltimore City | Baltimore | Level 3 Communications, Llc - Md |
| 1-240-346 | |||
| 1-240-347 | |||
| 1-240-348 | Fairfax | McLean | Level 3 Communications, Llc - Md |
| 1-240-350 | District of Columbia | Washington | Sprint Spectrum L.p. |
| 1-240-351 | District of Columbia | Washington | Sprint Spectrum L.p. |
| 1-240-353 | |||
| 1-240-354 | District of Columbia | Washington | Sprint Spectrum L.p. |
| 1-240-355 | |||
| 1-240-356 | |||
| 1-240-357 | |||
| 1-240-358 | District of Columbia | Washington | Peerless Network Of Maryland, Llc |
| 1-240-359 | District of Columbia | Washington | Peerless Network Of Maryland, Llc |
| 1-240-360 | |||
| 1-240-361 | |||
| 1-240-362 | |||
| 1-240-363 | Fairfax | Vienna | Global Naps South, Inc. - Md |
| 1-240-364 | |||
| 1-240-366 | Washington | Hagerstown | At&t Local |
| 1-240-367 | |||
| 1-240-368 | District of Columbia | Washington | Peerless Network Of Maryland, Llc |
| 1-240-370 | District of Columbia | Washington | Sprint Spectrum L.p. |
| 1-240-372 | |||
| 1-240-374 | Global Crossing Local Services, Inc.-md | ||
| 1-240-375 | |||
| 1-240-376 | District of Columbia | Washington | Peerless Network Of Maryland, Llc |
| 1-240-377 | |||
| 1-240-378 | Frederick | Frederick | Core Communications, Inc. - Md |
| 1-240-380 | |||
| 1-240-381 | Prince Georges | Beltsville | New Cingular Wireless Pcs, Llc - Dc |
| 1-240-382 | Washington | Hagerstown | Teleport Communications America, Llc - Md |
| 1-240-383 | Prince Georges | Beltsville | New Cingular Wireless Pcs, Llc - Dc |
| 1-240-384 | District of Columbia | Washington | Peerless Network Of Maryland, Llc |
| 1-240-385 | |||
| 1-240-386 | |||
| 1-240-388 | |||
| 1-240-389 | |||
| 1-240-390 | |||
| 1-240-391 | |||
| 1-240-392 | |||
| 1-240-393 | |||
| 1-240-394 | |||
| 1-240-395 | |||
| 1-240-396 | |||
| 1-240-397 | |||
| 1-240-398 | |||
| 1-240-400 | |||
| 1-240-401 | |||
| 1-240-404 | |||
| 1-240-405 | |||
| 1-240-406 | District of Columbia | Washington | New Cingular Wireless Pcs, Llc - Dc |
| 1-240-407 | Global Crossing Local Services, Inc.-md | ||
| 1-240-408 | |||
| 1-240-409 | |||
| 1-240-410 | |||
| 1-240-412 | |||
| 1-240-413 | |||
| 1-240-415 | |||
| 1-240-416 | |||
| 1-240-417 | |||
| 1-240-418 | |||
| 1-240-419 | District of Columbia | Washington | Cellco Partnership Dba Verizon Wireless - Md |
| 1-240-421 | |||
| 1-240-422 | |||
| 1-240-423 | |||
| 1-240-424 | |||
| 1-240-425 | |||
| 1-240-426 | |||
| 1-240-427 | |||
| 1-240-428 | District of Columbia | Washington | Bandwidth.com Clec, Llc - Md |
| 1-240-429 | Prince Georges | Hyattsville | Cellco Partnership Dba Verizon Wireless - Md |
| 1-240-431 | |||
| 1-240-432 | |||
| 1-240-433 | |||
| 1-240-434 | |||
| 1-240-435 | District of Columbia | Washington | Cellco Partnership Dba Verizon Wireless - Md |
| 1-240-436 | Frederick | Ijamsville | Telcove Operations, Inc. - Md |
| 1-240-437 | Prince Georges | Beltsville | Xo Maryland, Llc |
| 1-240-439 | |||
| 1-240-440 | |||
| 1-240-441 | Prince Georges | Beltsville | Omnipoint Communications Cap Operations, Llc |
| 1-240-442 | |||
| 1-240-443 | |||
| 1-240-444 | |||
| 1-240-445 | |||
| 1-240-446 | |||
| 1-240-447 | Prince Georges | Beltsville | New Cingular Wireless Pcs, Llc - Dc |
| 1-240-448 | District of Columbia | Washington | Sprint Spectrum L.p. |
| 1-240-450 | |||
| 1-240-451 | |||
| 1-240-452 | |||
| 1-240-453 | |||
| 1-240-454 | |||
| 1-240-455 | |||
| 1-240-457 | Frederick | Frederick | Cellco Partnership Dba Verizon Wireless - Md |
| 1-240-458 | |||
| 1-240-460 | |||
| 1-240-461 | |||
| 1-240-462 | |||
| 1-240-463 | |||
| 1-240-464 | |||
| 1-240-466 | District of Columbia | Washington | New Cingular Wireless Pcs, Llc - Dc |
| 1-240-467 | |||
| 1-240-468 | |||
| 1-240-469 | |||
| 1-240-470 | |||
| 1-240-471 | Global Crossing Local Services, Inc.-md | ||
| 1-240-472 | |||
| 1-240-473 | Fairfax | Herndon | Cavalier Telephone Mid-atlantic, Llc - Md |
| 1-240-474 | |||
| 1-240-475 | |||
| 1-240-476 | |||
| 1-240-477 | |||
| 1-240-478 | |||
| 1-240-479 | Howard | Annapolis Junction | Cellco Partnership Dba Verizon Wireless - Md |
| 1-240-480 | |||
| 1-240-481 | |||
| 1-240-482 | |||
| 1-240-483 | |||
| 1-240-484 | |||
| 1-240-485 | Fairfax | McLean | Us Lec Of Maryland, Inc. |
| 1-240-486 | |||
| 1-240-487 | |||
| 1-240-488 | |||
| 1-240-489 | District of Columbia | Washington | Xo Maryland, Llc |
| 1-240-490 | |||
| 1-240-491 | |||
| 1-240-492 | |||
| 1-240-493 | Fairfax | McLean | Us Lec Of Maryland, Inc. |
| 1-240-494 | |||
| 1-240-495 | |||
| 1-240-496 | |||
| 1-240-497 | |||
| 1-240-498 | |||
| 1-240-499 | |||
| 1-240-500 | |||
| 1-240-501 | |||
| 1-240-502 | District of Columbia | Washington | Sprint Spectrum L.p. |
| 1-240-503 | Montgomery | Silver Spring | Peerless Network Of Maryland, Llc |
| 1-240-504 | |||
| 1-240-505 | |||
| 1-240-506 | Prince Georges | Beltsville | New Cingular Wireless Pcs, Llc - Dc |
| 1-240-507 | Howard | Annapolis Junction | Cellco Partnership Dba Verizon Wireless - Md |
| 1-240-508 | |||
| 1-240-509 | Baltimore City | Baltimore | Bandwidth.com Clec, Llc - Md |
| 1-240-510 | |||
| 1-240-512 | |||
| 1-240-513 | |||
| 1-240-514 | |||
| 1-240-515 | |||
| 1-240-516 | Fairfax | McLean | Us Lec Of Maryland, Inc. |
| 1-240-517 | |||
| 1-240-518 | |||
| 1-240-519 | |||
| 1-240-520 | |||
| 1-240-521 | |||
| 1-240-522 | |||
| 1-240-523 | District of Columbia | Washington | Xo Maryland, Llc |
| 1-240-524 | |||
| 1-240-527 | |||
| 1-240-529 | |||
| 1-240-530 | |||
| 1-240-531 | |||
| 1-240-532 | |||
| 1-240-533 | |||
| 1-240-534 | Montgomery | Chevy Chase | Cellco Partnership Dba Verizon Wireless - Md |
| 1-240-535 | |||
| 1-240-537 | |||
| 1-240-538 | |||
| 1-240-540 | |||
| 1-240-541 | |||
| 1-240-542 | Fairfax | McLean | Us Lec Of Maryland, Inc. |
| 1-240-543 | |||
| 1-240-544 | |||
| 1-240-545 | |||
| 1-240-546 | Fairfax | McLean | Us Lec Of Maryland, Inc. |
| 1-240-547 | Fairfax | McLean | Level 3 Communications, Llc - Md |
| 1-240-548 | |||
| 1-240-549 | |||
| 1-240-550 | |||
| 1-240-551 | |||
| 1-240-552 | |||
| 1-240-553 | |||
| 1-240-558 | Fairfax | Herndon | Cavalier Telephone Mid-atlantic, Llc - Md |
| 1-240-560 | |||
| 1-240-563 | Fairfax | Vienna | Neutral Tandem-maryland, Llc - Md |
| 1-240-569 | Washington | Hagerstown | Bandwidth.com Clec, Llc - Md |
| 1-240-575 | Frederick | Frederick | Level 3 Communications, Llc - Md |
| 1-240-580 | Allegany | Cumberland | Sprint Spectrum L.p. |
| 1-240-590 | |||
| 1-240-594 | |||
| 1-240-597 | District of Columbia | Washington | Peerless Network Of Maryland, Llc |
| 1-240-599 | District of Columbia | Washington | Broadwing Communications. Llc - Md |
| 1-240-600 | District of Columbia | Washington | Sprint Spectrum L.p. |
| 1-240-608 | |||
| 1-240-612 | Prince Georges | Laurel | Level 3 Telecom Of Maryland, Llc - Md |
| 1-240-616 | Prince Georges | Beltsville | Mci Worldcom Communications, Inc. - Md |
| 1-240-617 | Washington | Hagerstown | Bandwidth.com Clec, Llc - Md |
| 1-240-618 | Prince Georges | Beltsville | Cellco Partnership Dba Verizon Wireless - Md |
| 1-240-619 | Manassas City | Manassas | Mci Worldcom Communications, Inc. - Md |
| 1-240-622 | |||
| 1-240-623 | |||
| 1-240-624 | |||
| 1-240-628 | |||
| 1-240-633 | Fairfax | Vienna | Baltimore-washington Telephone (bwt) |
| 1-240-634 | |||
| 1-240-651 | Frederick | Frederick | Cellco Partnership Dba Verizon Wireless - Md |
| 1-240-652 | District of Columbia | Washington | Xo Maryland, Llc |
| 1-240-653 | |||
| 1-240-657 | Frederick | Frederick | Mci Worldcom Communications, Inc. - Md |
| 1-240-658 | |||
| 1-240-659 | |||
| 1-240-660 | Howard | Annapolis Junction | Cellco Partnership Dba Verizon Wireless - Md |
| 1-240-661 | Fairfax | Vienna | Baltimore-washington Telephone (bwt) |
| 1-240-663 | |||
| 1-240-664 | |||
| 1-240-666 | |||
| 1-240-669 | |||
| 1-240-672 | |||
| 1-240-678 | Howard | Annapolis Junction | Cellco Partnership Dba Verizon Wireless - Md |
| 1-240-679 | |||
| 1-240-681 | Prince Georges | Beltsville | Atx Telecommunications Services, Ltd |
| 1-240-685 | Global Crossing Local Services, Inc.-md | ||
| 1-240-686 | |||
| 1-240-690 | |||
| 1-240-693 | |||
| 1-240-696 | Fairfax | McLean | Level 3 Communications, Llc - Md |
| 1-240-697 | |||
| 1-240-698 | |||
| 1-240-705 | Prince Georges | Beltsville | New Cingular Wireless Pcs, Llc - Dc |
| 1-240-713 | Prince Georges | Beltsville | Peerless Network Of Maryland, Llc |
| 1-240-716 | Prince Georges | Beltsville | Omnipoint Communications Cap Operations, Llc |
| 1-240-721 | |||
| 1-240-724 | |||
| 1-240-725 | Saint Marys | Lexington Park | Verizon Maryland, Inc. |
| 1-240-732 | Frederick | Monrovia | New Cingular Wireless Pcs, Llc - Dc |
| 1-240-735 | |||
| 1-240-736 | |||
| 1-240-739 | |||
| 1-240-741 | |||
| 1-240-742 | |||
| 1-240-743 | Howard | Annapolis Junction | Local Access Llc - Md |
| 1-240-755 | Baltimore City | Baltimore | Comcast Phone Of Northern Maryland, Inc. - Md |
| 1-240-757 | |||
| 1-240-767 | |||
| 1-240-770 | Manassas City | Manassas | Comcast Phone Of Northern Maryland, Inc. - Md |
| 1-240-771 | Fairfax | Vienna | Neutral Tandem-maryland, Llc - Md |
| 1-240-773 | Montgomery | Rockville | Verizon Maryland, Inc. |
| 1-240-775 | |||
| 1-240-776 | District of Columbia | Washington | Broadwing Communications. Llc - Md |
| 1-240-780 | |||
| 1-240-787 | District of Columbia | Washington | Broadwing Communications. Llc - Md |
| 1-240-788 | |||
| 1-240-790 | |||
| 1-240-791 | |||
| 1-240-795 | |||
| 1-240-798 | |||
| 1-240-799 | |||
| 1-240-801 | Howard | Annapolis Junction | Cellco Partnership Dba Verizon Wireless - Md |
| 1-240-803 | Washington | Hagerstown | New Cingular Wireless Pcs, Llc - Dc |
| 1-240-806 | District of Columbia | Washington | Peerless Network Of Maryland, Llc |
| 1-240-812 | District of Columbia | Washington | Global Crossing Local Services, Inc.-md |
| 1-240-816 | Washington | Hagerstown | Bandwidth.com Clec, Llc - Md |
| 1-240-817 | Prince Georges | Beltsville | Omnipoint Communications Cap Operations, Llc |
| 1-240-820 | |||
| 1-240-821 | Prince Georges | Beltsville | Lightwave Communications, Llc - Md |
| 1-240-823 | |||
| 1-240-824 | |||
| 1-240-825 | Prince Georges | Hyattsville | Cellco Partnership Dba Verizon Wireless - Md |
| 1-240-829 | |||
| 1-240-830 | District of Columbia | Washington | Comcast Phone Of Northern Maryland, Inc. - Md |
| 1-240-833 | District of Columbia | Washington | Xo Maryland, Llc |
| 1-240-834 | |||
| 1-240-836 | |||
| 1-240-837 | District of Columbia | Washington | Xo Maryland, Llc |
| 1-240-839 | Prince Georges | Hyattsville | Cellco Partnership Dba Verizon Wireless - Md |
| 1-240-840 | |||
| 1-240-843 | Baltimore City | Baltimore | Allegiance Telecom, Inc. - Md |
| 1-240-845 | |||
| 1-240-846 | District of Columbia | Washington | Xo Maryland, Llc |
| 1-240-850 | Washington | Hagerstown | Peerless Network Of Maryland, Llc |
| 1-240-851 | |||
| 1-240-855 | District of Columbia | Washington | Sprint Spectrum L.p. |
| 1-240-856 | Baltimore City | Baltimore | Cellco Partnership Dba Verizon Wireless - Md |
| 1-240-858 | Howard | Annapolis Junction | Cellco Partnership Dba Verizon Wireless - Md |
| 1-240-859 | |||
| 1-240-860 | Frederick | Frederick | Peerless Network Of Maryland, Llc |
| 1-240-862 | Frederick | Frederick | Neutral Tandem-maryland, Llc - Md |
| 1-240-866 | |||
| 1-240-874 | |||
| 1-240-876 | District of Columbia | Washington | Sprint Spectrum L.p. |
| 1-240-877 | Allegany | Cumberland | Neutral Tandem-maryland, Llc - Md |
| 1-240-878 | |||
| 1-240-883 | District of Columbia | Washington | Broadwing Communications. Llc - Md |
| 1-240-888 | Prince Georges | Beltsville | New Cingular Wireless Pcs, Llc - Dc |
| 1-240-892 | District of Columbia | Washington | Broadwing Communications. Llc - Md |
| 1-240-895 | Saint Marys | Lexington Park | Verizon Maryland, Inc. |
| 1-240-898 | District of Columbia | Washington | Broadwing Communications. Llc - Md |
| 1-240-900 | Fairfax | Vienna | Neutral Tandem-maryland, Llc - Md |
| 1-240-901 | District of Columbia | Washington | Centurylink Communications Llc |
| 1-240-903 | |||
| 1-240-906 | |||
| 1-240-908 | |||
| 1-240-912 | Fairfax | McLean | Us Lec Of Maryland, Inc. |
| 1-240-913 | |||
| 1-240-917 | |||
| 1-240-942 | |||
| 1-240-949 | District of Columbia | Washington | Cavalier East Llc - Md |
| 1-240-956 | |||
| 1-240-979 | Frederick | Frederick | Level 3 Communications, Llc - Md |
| 1-240-981 | |||
| 1-240-988 | District of Columbia | Washington | Sprint Spectrum L.p. |
| 1-240-995 | |||
| 1-240-996 | Frederick | Frederick | Centurylink Communications Llc |
| 1-240-998 | Frederick | Frederick | Centurylink Communications Llc |