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Detailed Information on Area Code 240

Reverse lookup results for area code 240

Country United States of America
State MARYLAND
Area Code 240
Date First Introduced Nov 20 1998
Timezone (UTC-05:00)
Major Counties MONTGOMERY, PRINCE GEORGE'S, FREDERICK, CHARLES, ST. MARY'S
Major Cities ROCKVILLE, SILVER SPRING, GAITHERSBURG, FREDERICK, BETHESDA, LAUREL, CAPITOL HEIGHTS, BELTSVILLE, WALDORF, MOUNT RAINIER
Related Area Codes 301 410 443

Location map for area code 240 in MARYLAND


Following is the list of available exchanges for area code 240 in MARYLAND -


TEMPLE HILLS
Area Code 240-619 - (Mci Worldcom Communications, Inc. - Md - 240619 )Area Code 240-695 - (Verizon Maryland, Inc. - 240695 )Area Code 240-857 - (Verizon Maryland, Inc. - 240857 )
ASHTON
Area Code 240-342 - (Starpower Communications, Llc - Md - 240342 )Area Code 240-389 - (Atx Telecommunications Services, Ltd - 240389 )Area Code 240-390 - (Cavalier Telephone Mid-atlantic. Llc - Md - 240390 )Area Code 240-437 - (Xo Maryland, Llc - 240437 )Area Code 240-536 - (Global Naps South, Inc. - Md - 240536 )Area Code 240-559 - (Allegiance Telecom, Inc. - Md - 240559 )Area Code 240-722 - (Global Crossing Local Services, Inc.-md - 240722 )Area Code 240-779 - (Cavalier East Llc - Md - 240779 )Area Code 240-883 - (Focal Communications Corp Of The Mid-atlantic - 240883 )Area Code 240-938 - (Omnipoint Communications Cap Operations, Llc - 240938 )
NANJEMOY
Area Code 240-218 - (Global Naps South, Inc. - Md - 240218 )Area Code 240-257 - (Teleport Communications Group, Inc. - Dc - 240257 )Area Code 240-986 - (Xo Maryland, Llc - 240986 )
NEWBURG
Area Code 240-219 - (Global Naps South, Inc. - Md - 240219 )Area Code 240-233 - (Teleport Communications Group, Inc. - Dc - 240233 )Area Code 240-332 - (Global Naps South, Inc. - Md - 240332 )Area Code 240-804 - (Xo Maryland, Llc - 240804 )
SMITHSBURG
Area Code 240-818 - (Verizon Maryland, Inc. - 240818 )
MCCOOLE
Area Code 240-322 - (Core Communications, Inc. - Md - 240322 )
LEONARDTOWN
Area Code 240-239 - (Core Communications, Inc. - Md - 240239 )Area Code 240-256 - (Teleport Communications Group, Inc. - Dc - 240256 )Area Code 240-298 - (Cellco Partnership Dba Verizon Wireless - Md - 240298 )Area Code 240-434 - (Focal Communications Corp Of The Mid-atlantic - 240434 )Area Code 240-526 - (Global Naps South, Inc. - Md - 240526 )Area Code 240-538 - (Xo Maryland, Llc - 240538 )Area Code 240-925 - (Cellco Partnership Dba Verizon Wireless - Md - 240925 )
BELTSVILLE
Area Code 240-264 - (Verizon Maryland, Inc. - 240264 )Area Code 240-305 - (Sprint Spectrum L.p. - 240305 )Area Code 240-350 - (Sprint Spectrum L.p. - 240350 )Area Code 240-351 - (Sprint Spectrum L.p. - 240351 )Area Code 240-353 - (Sprint Spectrum L.p. - 240353 )Area Code 240-354 - (Sprint Spectrum L.p. - 240354 )Area Code 240-355 - (Sprint Spectrum L.p. - 240355 )Area Code 240-418 - (Sprint Spectrum L.p. - 240418 )Area Code 240-432 - (Sprint Spectrum L.p. - 240432 )Area Code 240-462 - (Sprint Spectrum L.p. - 240462 )Area Code 240-498 - (Sprint Spectrum L.p. - 240498 )Area Code 240-601 - (Sprint Spectrum L.p. - 240601 )Area Code 240-602 - (Sprint Spectrum L.p. - 240602 )Area Code 240-603 - (Sprint Spectrum L.p. - 240603 )Area Code 240-604 - (Sprint Spectrum L.p. - 240604 )Area Code 240-605 - (Sprint Spectrum L.p. - 240605 )Area Code 240-606 - (Sprint Spectrum L.p. - 240606 )Area Code 240-988 - (Sprint Spectrum L.p. - 240988 )
HYATTSVILLE
Area Code 240-260 - (Allegiance Telecom, Inc. - Md - 240260 )Area Code 240-296 - (Cavalier Telephone Mid-atlantic. Llc - Md - 240296 )Area Code 240-413 - (Omnipoint Communications Cap Operations, Llc - 240413 )Area Code 240-487 - (Us Lec Of Maryland, Inc. - 240487 )Area Code 240-539 - (Global Naps South, Inc. - Md - 240539 )Area Code 240-582 - (Verizon Maryland, Inc. - 240582 )Area Code 240-667 - (Global Crossing Local Services, Inc.-md - 240667 )Area Code 240-696 - (Level 3 Communications, Llc - Md - 240696 )Area Code 240-737 - (Cavalier East Llc - Md - 240737 )Area Code 240-764 - (Xo Maryland, Llc - 240764 )
LAUREL
Area Code 240-228 - (Verizon Maryland, Inc. - 240228 )Area Code 240-294 - (Xo Maryland, Llc - 240294 )Area Code 240-295 - (Cavalier Telephone Mid-atlantic. Llc - Md - 240295 )Area Code 240-374 - (Global Crossing Local Services, Inc.-md - 240374 )Area Code 240-456 - (Verizon Maryland, Inc. - 240456 )Area Code 240-524 - (Global Naps South, Inc. - Md - 240524 )Area Code 240-547 - (Level 3 Communications, Llc - Md - 240547 )Area Code 240-554 - (Allegiance Telecom, Inc. - Md - 240554 )Area Code 240-568 - (Verizon Maryland, Inc. - 240568 )Area Code 240-581 - (Paetec Communications, Inc. - Dc - 240581 )Area Code 240-593 - (Omnipoint Communications Cap Operations, Llc - 240593 )Area Code 240-616 - (Mci Worldcom Communications, Inc. - Md - 240616 )Area Code 240-646 - (Cavalier East Llc - Md - 240646 )Area Code 240-786 - (Focal Communications Corp Of The Mid-atlantic - 240786 )Area Code 240-841 - (Allegiance Telecom, Inc. - Md - 240841 )Area Code 240-861 - (Xspedius Management Co Switches Services, Llc - Md - 240861 )Area Code 240-863 - (Xspedius Management Co Switches Services, Llc - Md - 240863 )Area Code 240-866 - (Xspedius Management Co Switches Services, Llc - Md - 240866 )
FREDERICK
Area Code 240-215 - (Kmc Telecom Iii, Inc. - Md - 240215 )Area Code 240-225 - (Core Communications, Inc. - Md - 240225 )Area Code 240-236 - (Verizon Maryland, Inc. - 240236 )Area Code 240-285 - (Cavalier East Llc - Md - 240285 )Area Code 240-315 - (Kmc Telecom Iii, Inc. - Md - 240315 )Area Code 240-341 - (Weblink Wireless, Inc. - 240341 )Area Code 240-344 - (At&t Wireless Services, Inc. - 240344 )Area Code 240-345 - (Kmc Telecom Iii, Inc. - Md - 240345 )Area Code 240-356 - (Sprint Communications Company, L.p. - Md - 240356 )Area Code 240-367 - (Nextel Communications - 240367 )Area Code 240-379 - (Verizon Maryland, Inc. - 240379 )Area Code 240-409 - (Dobson Cellular Systems, Inc. - 240409 )Area Code 240-422 - (Omnipoint Communications Cap Operations, Llc - 240422 )Area Code 240-446 - (Cellco Partnership Dba Verizon Wireless - Md - 240446 )Area Code 240-529 - (Verizon Maryland, Inc. - 240529 )Area Code 240-566 - (Verizon Maryland, Inc. - 240566 )Area Code 240-626 - (Sprint Spectrum L.p. - 240626 )Area Code 240-629 - (Verizon Maryland, Inc. - 240629 )Area Code 240-674 - (Nextel Communications - 240674 )
LA PLATA
Area Code 240-208 - (Global Naps South, Inc. - Md - 240208 )Area Code 240-349 - (Global Crossing Local Services, Inc.-md - 240349 )Area Code 240-352 - (Global Naps South, Inc. - Md - 240352 )Area Code 240-523 - (Xo Maryland, Llc - 240523 )Area Code 240-776 - (Focal Communications Corp Of The Mid-atlantic - 240776 )
WILLIAMSPORT
Area Code 240-366 - (At&t Local - 240366 )
CLINTON
Area Code 240-244 - (Starpower Communications, Llc - Md - 240244 )Area Code 240-269 - (Global Naps South, Inc. - Md - 240269 )Area Code 240-303 - (Cavalier Telephone Mid-atlantic. Llc - Md - 240303 )Area Code 240-318 - (Verizon Maryland, Inc. - 240318 )Area Code 240-348 - (Sprint Communications Company, L.p. - Md - 240348 )Area Code 240-407 - (Global Crossing Local Services, Inc.-md - 240407 )Area Code 240-546 - (Us Lec Of Maryland, Inc. - 240546 )Area Code 240-846 - (Xo Maryland, Llc - 240846 )Area Code 240-949 - (Cavalier East Llc - Md - 240949 )
KENSINGTON
Area Code 240-242 - (Starpower Communications, Llc - Md - 240242 )Area Code 240-278 - (Weblink Wireless, Inc. - 240278 )Area Code 240-283 - (Paetec Communications, Inc. - Md - 240283 )Area Code 240-292 - (Verizon Maryland, Inc. - 240292 )Area Code 240-363 - (Global Naps South, Inc. - Md - 240363 )Area Code 240-430 - (Cavalier Telephone Mid-atlantic. Llc - Md - 240430 )Area Code 240-514 - (Us Lec Of Maryland, Inc. - 240514 )Area Code 240-627 - (Global Crossing Local Services, Inc.-md - 240627 )Area Code 240-669 - (Sbc Telecom, Inc. - Md - 240669 )Area Code 240-747 - (Cavalier East Llc - Md - 240747 )Area Code 240-833 - (Xo Maryland, Llc - 240833 )
RIDGE
Area Code 240-201 - (Global Naps South, Inc. - Md - 240201 )Area Code 240-248 - (Global Naps South, Inc. - Md - 240248 )Area Code 240-258 - (Teleport Communications Group, Inc. - Dc - 240258 )Area Code 240-844 - (Xo Maryland, Llc - 240844 )
GLENN DALE
Area Code 240-206 - (Xo Maryland, Llc - 240206 )Area Code 240-245 - (Starpower Communications, Llc - Md - 240245 )Area Code 240-266 - (Global Naps South, Inc. - Md - 240266 )Area Code 240-270 - (Tidalwave Telephone Inc. - 240270 )Area Code 240-272 - (Tidalwave Telephone Inc. - 240272 )Area Code 240-334 - (Global Crossing Local Services, Inc.-md - 240334 )Area Code 240-335 - (Cavalier Telephone Mid-atlantic. Llc - Md - 240335 )Area Code 240-486 - (Omnipoint Communications Cap Operations, Llc - 240486 )Area Code 240-544 - (Us Lec Of Maryland, Inc. - 240544 )Area Code 240-548 - (Allegiance Telecom, Inc. - Md - 240548 )Area Code 240-556 - (Paetec Communications, Inc. - Md - 240556 )Area Code 240-842 - (Allegiance Telecom, Inc. - Md - 240842 )Area Code 240-929 - (Cavalier East Llc - Md - 240929 )
BETHESDA
Area Code 240-235 - (Paetec Communications, Inc. - Md - 240235 )Area Code 240-271 - (Southwestern Bell Mobile Systems, Llc - Dc - 240271 )Area Code 240-274 - (Southwestern Bell Mobile Systems, Llc - Dc - 240274 )Area Code 240-277 - (Sprint Spectrum L.p. - 240277 )Area Code 240-281 - (Southwestern Bell Mobile Systems, Llc - Dc - 240281 )Area Code 240-286 - (Nextel Communications - 240286 )Area Code 240-333 - (Cavalier East Llc - Md - 240333 )Area Code 240-336 - (Core Communications, Inc. - Md - 240336 )Area Code 240-383 - (Southwestern Bell Mobile Systems, Llc - Dc - 240383 )Area Code 240-395 - (Cavalier Telephone Mid-atlantic. Llc - Md - 240395 )Area Code 240-396 - (Global Crossing Local Services, Inc.-md - 240396 )Area Code 240-425 - (Talkingnets Holdings, Llc - Md - 240425 )Area Code 240-426 - (Sprint Spectrum L.p. - 240426 )Area Code 240-465 - (Global Naps South, Inc. - Md - 240465 )Area Code 240-482 - (Us Lec Of Maryland, Inc. - 240482 )Area Code 240-483 - (Comcast Business Communications, Inc. - Md - 240483 )Area Code 240-515 - (Southwestern Bell Mobile Systems, Llc - Dc - 240515 )Area Code 240-644 - (Xo Maryland, Llc - 240644 )Area Code 240-671 - (Sbc Telecom, Inc. - Md - 240671 )Area Code 240-783 - (Mte, Inc. Dba Mte Paging Network - 240783 )Area Code 240-832 - (Nextel Communications - 240832 )Area Code 240-876 - (Nextel Communications - 240876 )Area Code 240-899 - (Omnipoint Communications Cap Operations, Llc - 240899 )
GAITHERSBURG
Area Code 240-243 - (Allegiance Telecom, Inc. - Md - 240243 )Area Code 240-246 - (Starpower Communications, Llc - Md - 240246 )Area Code 240-252 - (Level 3 Communications, Llc - Md - 240252 )Area Code 240-306 - (Allegiance Telecom, Inc. - Md - 240306 )Area Code 240-327 - (Core Communications, Inc. - Md - 240327 )Area Code 240-361 - (Cavalier Telephone Mid-atlantic. Llc - Md - 240361 )Area Code 240-364 - (Cavalier East Llc - Md - 240364 )Area Code 240-372 - (Nextel Communications - 240372 )Area Code 240-386 - (Verizon Maryland, Inc. - 240386 )Area Code 240-388 - (Nextel Communications - 240388 )Area Code 240-404 - (Xo Maryland, Llc - 240404 )Area Code 240-449 - (Southwestern Bell Mobile Systems, Llc - Dc - 240449 )Area Code 240-597 - (Global Naps South, Inc. - Md - 240597 )Area Code 240-631 - (Verizon Maryland, Inc. - 240631 )Area Code 240-632 - (Verizon Maryland, Inc. - 240632 )Area Code 240-683 - (Verizon Maryland, Inc. - 240683 )Area Code 240-686 - (Verizon Maryland, Inc. - 240686 )Area Code 240-720 - (Global Crossing Local Services, Inc.-md - 240720 )Area Code 240-751 - (Kmc Telecom Iii, Inc. - Md - 240751 )Area Code 240-780 - (Focal Communications Corp Of The Mid-atlantic - 240780 )Area Code 240-793 - (Nextel Communications - 240793 )Area Code 240-813 - (Atx Telecommunications Services, Ltd - 240813 )Area Code 240-848 - (Sbc Telecom, Inc. - Md - 240848 )Area Code 240-912 - (Us Lec Of Maryland, Inc. - 240912 )
MYERSVILLE
Area Code 240-385 - (Verizon Maryland, Inc. - 240385 )Area Code 240-675 - (Dobson Cellular Systems, Inc. - 240675 )Area Code 240-784 - (Omnipoint Communications Cap Operations, Llc - 240784 )
COLLEGE PARK
Area Code 240-241 - (Starpower Communications, Llc - Md - 240241 )Area Code 240-297 - (Level 3 Communications, Llc - Md - 240297 )Area Code 240-387 - (Cavalier East Llc - Md - 240387 )Area Code 240-391 - (Global Crossing Local Services, Inc.-md - 240391 )Area Code 240-473 - (Cavalier Telephone Mid-atlantic. Llc - Md - 240473 )Area Code 240-542 - (Us Lec Of Maryland, Inc. - 240542 )Area Code 240-553 - (Allegiance Telecom, Inc. - Md - 240553 )Area Code 240-757 - (Global Naps South, Inc. - Md - 240757 )Area Code 240-843 - (Allegiance Telecom, Inc. - Md - 240843 )Area Code 240-845 - (Xo Maryland, Llc - 240845 )Area Code 240-965 - (Paetec Communications, Inc. - Dc - 240965 )
BRANDYWINE
Area Code 240-250 - (Global Naps South, Inc. - Md - 240250 )Area Code 240-681 - (Atx Telecommunications Services, Ltd - 240681 )Area Code 240-685 - (Global Crossing Local Services, Inc.-md - 240685 )Area Code 240-787 - (Focal Communications Corp Of The Mid-atlantic - 240787 )Area Code 240-823 - (Xo Maryland, Llc - 240823 )
GREENBELT
Area Code 240-624 - (Verizon Maryland, Inc. - 240624 )Area Code 240-684 - (Verizon Maryland, Inc. - 240684 )
BALTIMORE
Area Code 240-280 - (Comcast Business Communications, Inc. - Md - 240280 )Area Code 240-865 - (Sbc Telecom, Inc. - Md - 240865 )
LEXINGTON PARK
Area Code 240-725 - (Verizon Maryland, Inc. - 240725 )Area Code 240-895 - (Verizon Maryland, Inc. - 240895 )
SILVER SPRING
Area Code 240-293 - (Starpower Communications, Llc - Md - 240293 )Area Code 240-331 - (Global Naps South, Inc. - Md - 240331 )Area Code 240-338 - (Cellco Partnership Dba Verizon Wireless - Md - 240338 )Area Code 240-371 - (Global Naps South, Inc. - Md - 240371 )Area Code 240-381 - (At&t Wireless Services, Inc. - 240381 )Area Code 240-393 - (Cellco Partnership Dba Verizon Wireless - Md - 240393 )Area Code 240-398 - (Nextel Communications - 240398 )Area Code 240-423 - (Omnipoint Communications Cap Operations, Llc - 240423 )Area Code 240-433 - (Cavalier Telephone Mid-atlantic. Llc - Md - 240433 )Area Code 240-450 - (Cavalier Telephone Mid-atlantic. Llc - Md - 240450 )Area Code 240-460 - (At&t Wireless Services, Inc. - 240460 )Area Code 240-461 - (At&t Wireless Services, Inc. - 240461 )Area Code 240-463 - (At&t Wireless Services, Inc. - 240463 )Area Code 240-471 - (Global Crossing Local Services, Inc.-md - 240471 )Area Code 240-472 - (At&t Wireless Services, Inc. - 240472 )Area Code 240-475 - (At&t Wireless Services, Inc. - 240475 )Area Code 240-476 - (Omnipoint Communications Cap Operations, Llc - 240476 )Area Code 240-481 - (Omnipoint Communications Cap Operations, Llc - 240481 )Area Code 240-485 - (Us Lec Of Maryland, Inc. - 240485 )Area Code 240-491 - (Global Crossing Local Services, Inc.-md - 240491 )Area Code 240-494 - (Cavalier East Llc - Md - 240494 )Area Code 240-501 - (Sprint Spectrum L.p. - 240501 )Area Code 240-505 - (Omnipoint Communications Cap Operations, Llc - 240505 )Area Code 240-516 - (Us Lec Of Maryland, Inc. - 240516 )Area Code 240-535 - (At&t Wireless Services, Inc. - 240535 )Area Code 240-560 - (Xo Maryland, Llc - 240560 )Area Code 240-643 - (Omnipoint Communications Cap Operations, Llc - 240643 )Area Code 240-645 - (Xo Maryland, Llc - 240645 )Area Code 240-662 - (Verizon Maryland, Inc. - 240662 )Area Code 240-676 - (Cellco Partnership Dba Verizon Wireless - Md - 240676 )Area Code 240-678 - (Cellco Partnership Dba Verizon Wireless - Md - 240678 )Area Code 240-687 - (Cellco Partnership Dba Verizon Wireless - Md - 240687 )Area Code 240-723 - (Mci Worldcom Communications, Inc. - Md - 240723 )Area Code 240-868 - (Cavalier East Llc - Md - 240868 )Area Code 240-893 - (At&t Wireless Services, Inc. - 240893 )Area Code 240-997 - (Cellco Partnership Dba Verizon Wireless - Md - 240997 )
DAMASCUS
Area Code 240-207 - (Cavalier East Llc - Md - 240207 )Area Code 240-234 - (Arch Wireless Holdings, Inc. - 240234 )Area Code 240-262 - (Tidalwave Telephone Inc. - 240262 )Area Code 240-263 - (Tidalwave Telephone Inc. - 240263 )Area Code 240-308 - (At&t Wireless Services, Inc. - 240308 )Area Code 240-325 - (Core Communications, Inc. - Md - 240325 )Area Code 240-358 - (Global Naps South, Inc. - Md - 240358 )Area Code 240-365 - (Baltimore-washington Telephone Bwt - 240365 )Area Code 240-668 - (Starpower Communications, Llc - Md - 240668 )Area Code 240-745 - (Xo Maryland, Llc - 240745 )Area Code 240-782 - (Global Crossing Local Services, Inc.-md - 240782 )
MECHANICSVILLE
Area Code 240-214 - (Global Naps South, Inc. - Md - 240214 )Area Code 240-249 - (Teleport Communications Group, Inc. - Dc - 240249 )Area Code 240-282 - (Global Naps South, Inc. - Md - 240282 )Area Code 240-466 - (Kmc Telecom Iii, Inc. - Md - 240466 )Area Code 240-652 - (Xo Maryland, Llc - 240652 )
WALDORF
Area Code 240-210 - (Southwestern Bell Mobile Systems, Llc - Dc - 240210 )Area Code 240-213 - (Global Naps South, Inc. - Md - 240213 )Area Code 240-216 - (Nextel Communications - 240216 )Area Code 240-222 - (Cavalier Telephone Mid-atlantic. Llc - Md - 240222 )Area Code 240-229 - (Focal Communications Corp Of The Mid-atlantic - 240229 )Area Code 240-279 - (Core Communications, Inc. - Md - 240279 )Area Code 240-299 - (Nextel Communications - 240299 )Area Code 240-320 - (Cavalier East Llc - Md - 240320 )Area Code 240-346 - (Sprint Spectrum L.p. - 240346 )Area Code 240-368 - (Global Naps South, Inc. - Md - 240368 )Area Code 240-412 - (Sprint Spectrum L.p. - 240412 )Area Code 240-416 - (At&t Wireless Services, Inc. - 240416 )Area Code 240-427 - (Xo Maryland, Llc - 240427 )Area Code 240-607 - (Global Crossing Local Services, Inc.-md - 240607 )Area Code 240-682 - (Starpower Communications, Llc - Md - 240682 )
POOLESVILLE
Area Code 240-220 - (Global Naps South, Inc. - Md - 240220 )Area Code 240-255 - (Global Naps South, Inc. - Md - 240255 )Area Code 240-489 - (Xo Maryland, Llc - 240489 )Area Code 240-812 - (Global Crossing Local Services, Inc.-md - 240812 )
MOUNT AIRY
Area Code 240-369 - (Core Communications, Inc. - Md - 240369 )
MOUNT RAINIER
Area Code 240-223 - (Allegiance Telecom, Inc. - Md - 240223 )Area Code 240-232 - (Focal Communications Corp Of The Mid-atlantic - 240232 )Area Code 240-247 - (Allegiance Telecom, Inc. - Md - 240247 )Area Code 240-268 - (Allegiance Telecom, Inc. - Md - 240268 )Area Code 240-273 - (Focal Communications Corp Of The Mid-atlantic - 240273 )Area Code 240-290 - (Allegiance Telecom, Inc. - Md - 240290 )Area Code 240-533 - (Teleport Communications Group, Inc. - Dc - 240533 )Area Code 240-599 - (Focal Communications Corp Of The Mid-atlantic - 240599 )Area Code 240-638 - (Focal Communications Corp Of The Mid-atlantic - 240638 )Area Code 240-744 - (Focal Communications Corp Of The Mid-atlantic - 240744 )Area Code 240-788 - (Focal Communications Corp Of The Mid-atlantic - 240788 )Area Code 240-790 - (Focal Communications Corp Of The Mid-atlantic - 240790 )Area Code 240-880 - (Focal Communications Corp Of The Mid-atlantic - 240880 )Area Code 240-897 - (Focal Communications Corp Of The Mid-atlantic - 240897 )Area Code 240-898 - (Focal Communications Corp Of The Mid-atlantic - 240898 )
ROCKVILLE
Area Code 240-205 - (Southwestern Bell Mobile Systems, Llc - Dc - 240205 )Area Code 240-221 - (Verizon Maryland, Inc. - 240221 )Area Code 240-238 - (Paetec Communications, Inc. - Md - 240238 )Area Code 240-261 - (Global Naps, Inc.-ma - 240261 )Area Code 240-314 - (Verizon Maryland, Inc. - 240314 )Area Code 240-328 - (Verizon Maryland, Inc. - 240328 )Area Code 240-399 - (Xo Maryland, Llc - 240399 )Area Code 240-401 - (At&t Wireless Services, Inc. - 240401 )Area Code 240-403 - (Cavalier Telephone Mid-atlantic. Llc - Md - 240403 )Area Code 240-421 - (Omnipoint Communications Cap Operations, Llc - 240421 )Area Code 240-447 - (At&t Wireless Services, Inc. - 240447 )Area Code 240-453 - (Verizon Maryland, Inc. - 240453 )Area Code 240-499 - (Us Lec Of Maryland, Inc. - 240499 )Area Code 240-506 - (At&t Wireless Services, Inc. - 240506 )Area Code 240-558 - (Cavalier Telephone Mid-atlantic. Llc - Md - 240558 )Area Code 240-620 - (Mci Worldcom Communications, Inc. - Md - 240620 )Area Code 240-621 - (Mci Worldcom Communications, Inc. - Md - 240621 )Area Code 240-641 - (Tidalwave Telephone Inc. - 240641 )Area Code 240-642 - (Tidalwave Telephone Inc. - 240642 )Area Code 240-672 - (Sbc Telecom, Inc. - Md - 240672 )Area Code 240-694 - (Verizon Maryland, Inc. - 240694 )Area Code 240-715 - (Global Crossing Local Services, Inc.-md - 240715 )Area Code 240-731 - (At&t Wireless Services, Inc. - 240731 )Area Code 240-753 - (Kmc Telecom Iii, Inc. - Md - 240753 )Area Code 240-773 - (Verizon Maryland, Inc. - 240773 )Area Code 240-777 - (Verizon Maryland, Inc. - 240777 )Area Code 240-778 - (Xo Maryland, Llc - 240778 )Area Code 240-835 - (Arbros Communications Licensing Company, N.e. - Md - 240835 )Area Code 240-860 - (Xspedius Management Co Switches Services, Llc - Md - 240860 )Area Code 240-864 - (Cavalier East Llc - Md - 240864 )Area Code 240-888 - (At&t Wireless Services, Inc. - 240888 )Area Code 240-994 - (Cellco Partnership Dba Verizon Wireless - Md - 240994 )
ADAMSTOWN
Area Code 240-699 - (Kmc Telecom Iii, Inc. - Md - 240699 )
GRANTSVILLE
Area Code 240-275 - (Core Communications, Inc. - Md - 240275 )
HAGERSTOWN
Area Code 240-217 - (Omnipoint Communications Cap Operations, Llc - 240217 )Area Code 240-231 - (Core Communications, Inc. - Md - 240231 )Area Code 240-291 - (At&t Wireless Services, Inc. - 240291 )Area Code 240-310 - (Uscoc Of Cumberland, Inc. Dba United States Cel Md - 240310 )Area Code 240-313 - (Verizon Maryland, Inc. - 240313 )Area Code 240-329 - (Kmc Telecom Iii, Inc. - Md - 240329 )Area Code 240-343 - (Network Services Llc (tsr) - 240343 )Area Code 240-420 - (Verizon Maryland, Inc. - 240420 )Area Code 240-527 - (Verizon Maryland, Inc. - 240527 )Area Code 240-625 - (Sprint Communications Company, L.p. - Md - 240625 )
UPPER MARLBORO
Area Code 240-265 - (Tidalwave Telephone Inc. - 240265 )Area Code 240-267 - (Tidalwave Telephone Inc. - 240267 )Area Code 240-326 - (Cavalier Telephone Mid-atlantic. Llc - Md - 240326 )Area Code 240-339 - (Cavalier East Llc - Md - 240339 )Area Code 240-510 - (Xo Maryland, Llc - 240510 )Area Code 240-525 - (Global Naps South, Inc. - Md - 240525 )Area Code 240-545 - (Us Lec Of Maryland, Inc. - 240545 )Area Code 240-573 - (Global Crossing Local Services, Inc.-md - 240573 )Area Code 240-892 - (Focal Communications Corp Of The Mid-atlantic - 240892 )
HIGHFIELD
Area Code 240-251 - (Core Communications, Inc. - Md - 240251 )
INDIAN HEAD
Area Code 240-209 - (Global Naps South, Inc. - Md - 240209 )Area Code 240-359 - (Global Naps South, Inc. - Md - 240359 )Area Code 240-377 - (Global Crossing Local Services, Inc.-md - 240377 )Area Code 240-993 - (Xo Maryland, Llc - 240993 )
HUGHESVILLE
Area Code 240-230 - (Global Crossing Local Services, Inc.-md - 240230 )Area Code 240-254 - (Teleport Communications Group, Inc. - Dc - 240254 )Area Code 240-376 - (Global Naps South, Inc. - Md - 240376 )Area Code 240-528 - (Focal Communications Corp Of The Mid-atlantic - 240528 )Area Code 240-837 - (Xo Maryland, Llc - 240837 )
ODENTON
Area Code 240-373 - (Verizon Maryland, Inc. - 240373 )
CHEVY CHASE
Area Code 240-464 - (Mci Worldcom Communications, Inc. - Md - 240464 )Area Code 240-497 - (Verizon Maryland, Inc. - 240497 )Area Code 240-752 - (Kmc Telecom Iii, Inc. - Md - 240752 )
HANCOCK
Area Code 240-287 - (Core Communications, Inc. - Md - 240287 )
OAKLAND
Area Code 240-212 - (Core Communications, Inc. - Md - 240212 )Area Code 240-321 - (Uscoc Of Cumberland, Inc. Dba United States Cel Md - 240321 )Area Code 240-442 - (Kmc Telecom Iii, Inc. - Md - 240442 )
MIDDLETOWN
Area Code 240-490 - (Omnipoint Communications Cap Operations, Llc - 240490 )
EMMITSBURG
Area Code 240-307 - (At&t Local - 240307 )Area Code 240-323 - (Core Communications, Inc. - Md - 240323 )
CAPITOL HEIGHTS
Area Code 240-304 - (Nextel Communications - 240304 )Area Code 240-312 - (Cavalier Telephone Mid-atlantic. Llc - Md - 240312 )Area Code 240-337 - (Global Naps South, Inc. - Md - 240337 )Area Code 240-375 - (Nextel Communications - 240375 )Area Code 240-392 - (Starpower Communications, Llc - Md - 240392 )Area Code 240-417 - (Nextel Communications - 240417 )Area Code 240-455 - (Paetec Communications, Inc. - Dc - 240455 )Area Code 240-492 - (Us Lec Of Maryland, Inc. - 240492 )Area Code 240-508 - (Nextel Communications - 240508 )Area Code 240-691 - (Global Crossing Local Services, Inc.-md - 240691 )Area Code 240-765 - (Xo Maryland, Llc - 240765 )Area Code 240-767 - (Cavalier East Llc - Md - 240767 )Area Code 240-838 - (Omnipoint Communications Cap Operations, Llc - 240838 )Area Code 240-882 - (Nextel Communications - 240882 )
TALL TIMBERS
Area Code 240-237 - (Teleport Communications Group, Inc. - Dc - 240237 )Area Code 240-317 - (Starpower Communications, Llc - Md - 240317 )Area Code 240-384 - (Global Naps South, Inc. - Md - 240384 )Area Code 240-431 - (Sprint Spectrum L.p. - 240431 )Area Code 240-718 - (Xo Maryland, Llc - 240718 )Area Code 240-794 - (Focal Communications Corp Of The Mid-atlantic - 240794 )
OXON HILL
Area Code 240-224 - (Weblink Wireless, Inc. - 240224 )Area Code 240-253 - (Global Crossing Local Services, Inc.-md - 240253 )Area Code 240-289 - (Cavalier Telephone Mid-atlantic. Llc - Md - 240289 )Area Code 240-414 - (Global Naps South, Inc. - Md - 240414 )Area Code 240-441 - (Omnipoint Communications Cap Operations, Llc - 240441 )Area Code 240-493 - (Us Lec Of Maryland, Inc. - 240493 )Area Code 240-724 - (Cavalier East Llc - Md - 240724 )Area Code 240-766 - (Xo Maryland, Llc - 240766 )
IJAMSVILLE
Area Code 240-382 - (Kmc Telecom Iii, Inc. - Md - 240382 )Area Code 240-436 - (Kmc Telecom Iii, Inc. - Md - 240436 )
CUMBERLAND
Area Code 240-362 - (Verizon Maryland, Inc. - 240362 )Area Code 240-378 - (Core Communications, Inc. - Md - 240378 )Area Code 240-522 - (Sprint Spectrum L.p. - Md - 240522 )Area Code 240-580 - (Nextel Partners Operating Corp. - 240580 )Area Code 240-727 - (Dobson Cellular Systems, Inc. - 240727 )Area Code 240-920 - (Sprint Communications Company, L.p. - Md - 240920 )Area Code 240-979 - (Kmc Telecom Iii, Inc. - Md - 240979 )

Other Information about area code 240 in Maryland

  • State Information Resources for Maryland (Source: State Information)
  • CitySites Pages for Maryland (Source: Official CitySites)
  • Wikipedia Article on Area Code 240 (Source: Wikipedia)