Area Codes > 240 > Central Office Codes
Exchange | Rate Center | State | Operating Company |
---|---|---|---|
240-423 | WSHNGTNZN3 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
240-424 | WSHNGTNZN3 | MD | SPRINT SPECTRUM L.P. |
240-425 | WSHNGTNZN2 | MD | DSLNET COMMUNICATIONS VA, INC. - MD |
240-426 | WSHNGTNZN2 | MD | SPRINT SPECTRUM L.P. |
240-427 | WALDORF | MD | XO MARYLAND, LLC |
240-429 | WSHNGTNZN3 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240-430 | WSNGTNZN11 | MD | CAVALIER TELEPHONE MID-ATLANTIC. LLC - MD |
240-431 | LXTNPKGRML | MD | SPRINT SPECTRUM L.P. |
240-432 | WSHNGTNZN3 | MD | SPRINT SPECTRUM L.P. |
240-433 | WSNGTNZN12 | MD | CAVALIER TELEPHONE MID-ATLANTIC. LLC - MD |
240-434 | LEONARDTN | MD | BROADWING COMMUNICATIONS. LLC - MD |
240-436 | BUCKEYSTN | MD | TELCOVE OPERATIONS, INC. - MD |
240-437 | ASHTON236 | MD | XO MARYLAND, LLC |
240-439 | FREDERICK | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240-441 | WSHNGTNZN6 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
240-442 | OAKLAND | MD | VERIZON MARYLAND, INC. |
240-443 | MD | ||
240-446 | FREDERICK | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240-447 | WSNGTNZN10 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC |
240-449 | GAITHERSBG | MD | NEW CINGULAR WIRELESS PCS, LLC - DC |
240-450 | WSHNGTNZN3 | MD | CAVALIER TELEPHONE MID-ATLANTIC. LLC - MD |
240-453 | WSNGTNZN10 | MD | VERIZON MARYLAND, INC. |
240-454 | GAITHERSBG | MD | PAETEC COMMUNICATIONS, INC. - MD |
240-455 | WSHNGTNZN5 | MD | PAETEC COMMUNICATIONS, INC. - DC |
240-456 | LAUREL236 | MD | VERIZON MARYLAND, INC. |
240-460 | WSHNGTNZN3 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC |
240-461 | WSHNGTNZN3 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC |
240-462 | WSHNGTNZN3 | MD | SPRINT SPECTRUM L.P. |
240-463 | WSHNGTNZN3 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC |
240-464 | WSHNGTNZN2 | MD | NEXTEL COMMUNICATIONS, INC. |
240-465 | WSHNGTNZN2 | MD | GLOBAL NAPS SOUTH, INC. - MD |
240-466 | MECHANCSVL | MD | GLOBAL NAPS SOUTH, INC. - MD |
240-468 | WSHNGTNZN3 | MD | SPRINT SPECTRUM L.P. |
240-469 | HAGERSTOWN | MD | SPRINT SPECTRUM L.P. - MD |
240-471 | WSNGTNZN12 | MD | GLOBAL CROSSING LOCAL SERVICES, INC.-MD |
240-472 | WSHNGTNZN3 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC |
240-473 | WSNG236Z13 | MD | CAVALIER TELEPHONE MID-ATLANTIC. LLC - MD |
240-475 | WSHNGTNZN3 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC |
240-476 | WSHNGTNZN3 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
240-477 | GAITHERSBG | MD | LIGHTWAVE COMMUNICATIONS, LLC - MD |
240-478 | WSHNGTNZN3 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC |
240-479 | WSHNGTNZN2 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240-481 | WSHNGTNZN3 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
240-482 | WSHNGTNZN2 | MD | US LEC OF MARYLAND, INC. |
240-483 | WSHNGTNZN2 | MD | COMCAST BUSINESS COMMUNICATIONS, INC. - MD |
240-485 | WSHNGTNZN3 | MD | US LEC OF MARYLAND, INC. |
240-486 | WSNG236Z14 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
240-487 | WSHNGTNZN4 | MD | US LEC OF MARYLAND, INC. |
240-489 | POOLESVL | MD | XO MARYLAND, LLC |
240-490 | MIDDLETOWN | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
240-491 | WSHNGTNZN3 | MD | GLOBAL CROSSING LOCAL SERVICES, INC.-MD |
240-492 | WSHNGTNZN5 | MD | US LEC OF MARYLAND, INC. |
240-493 | WSHNGTNZN6 | MD | US LEC OF MARYLAND, INC. |
240-494 | WSHNGTNZN3 | MD | CAVALIER EAST LLC - MD |
240-497 | WSHNGTNZN2 | MD | VERIZON MARYLAND, INC. |
240-498 | WSHNGTNZN2 | MD | SPRINT SPECTRUM L.P. |
240-499 | WSNGTNZN10 | MD | US LEC OF MARYLAND, INC. |
240-501 | WSHNGTNZN3 | MD | SPRINT SPECTRUM L.P. |
240-505 | WSHNGTNZN3 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
240-506 | WSNGTNZN10 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC |
240-508 | WSHNGTNZN5 | MD | NEXTEL COMMUNICATIONS, INC. |
240-509 | WSNG238Z14 | MD | AT&T LOCAL |
240-510 | WSNG236Z15 | MD | XO MARYLAND, LLC |
240-511 | MD | ||
240-512 | WSNG238Z13 | MD | CORE COMMUNICATIONS, INC. - MD |
240-514 | WSNGTNZN11 | MD | US LEC OF MARYLAND, INC. |
240-515 | WSHNGTNZN2 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC |
240-516 | WSNGTNZN12 | MD | US LEC OF MARYLAND, INC. |
240-520 | HAGERSTOWN | MD | SPRINT SPECTRUM L.P. - MD |
240-522 | CUMBERLAND | MD | SPRINT SPECTRUM L.P. - MD |
240-523 | LA PLATA | MD | XO MARYLAND, LLC |
240-524 | LAUREL236 | MD | GLOBAL NAPS SOUTH, INC. - MD |
240-525 | WSNG236Z15 | MD | GLOBAL NAPS SOUTH, INC. - MD |
240-526 | LEONARDTN | MD | GLOBAL NAPS SOUTH, INC. - MD |
240-527 | HAGERSTOWN | MD | VERIZON MARYLAND, INC. |
240-528 | HUGHESVL | MD | BROADWING COMMUNICATIONS. LLC - MD |
240-529 | FREDERICK | MD | VERIZON MARYLAND, INC. |
240-533 | WSHNGTNZN3 | MD | TELEPORT COMMUNICATIONS GROUP, INC. - DC |
240-535 | WSHNGTNZN3 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC |
240-536 | ASHTON236 | MD | GLOBAL NAPS SOUTH, INC. - MD |
240-538 | LEONARDTN | MD | XO MARYLAND, LLC |
240-539 | WSHNGTNZN4 | MD | GLOBAL NAPS SOUTH, INC. - MD |
240-542 | WSNG236Z13 | MD | US LEC OF MARYLAND, INC. |
240-543 | WSHNGTNZN2 | MD | SPRINT SPECTRUM L.P. |
240-544 | WSNG236Z14 | MD | US LEC OF MARYLAND, INC. |
240-545 | WSNG236Z15 | MD | US LEC OF MARYLAND, INC. |
240-546 | WSNGTNZN16 | MD | US LEC OF MARYLAND, INC. |
240-547 | LAUREL236 | MD | LEVEL 3 COMMUNICATIONS, LLC - MD |
240-548 | WSNG236Z14 | MD | ALLEGIANCE TELECOM, INC. - MD |
240-553 | WSNG236Z13 | MD | ALLEGIANCE TELECOM, INC. - MD |
240-554 | LAUREL236 | MD | ALLEGIANCE TELECOM, INC. - MD |
240-555 | WSHNGTNZN4 | MD | VERIZON MARYLAND, INC. |
240-556 | WSNG236Z14 | MD | PAETEC COMMUNICATIONS, INC. - MD |
240-558 | WSNGTNZN11 | MD | CAVALIER TELEPHONE MID-ATLANTIC. LLC - MD |
240-559 | ASHTON236 | MD | ALLEGIANCE TELECOM, INC. - MD |
240-560 | WSNGTNZN12 | MD | XO MARYLAND, LLC |
240-565 | LAUREL238 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
240-566 | FREDERICK | MD | VERIZON MARYLAND, INC. |
240-567 | WSNGTNZN10 | MD | VERIZON MARYLAND, INC. |
240-568 | LAUREL236 | MD | VERIZON MARYLAND, INC. |