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Area Codes > 410 > Central Office Codes

Exchange Rate Center State Operating Company
410-400 BALTIMORE MD CAVALIER TELEPHONE MID-ATLANTIC. LLC - MD
410-401 BRYNPKLNCM MD MCIMETRO, ATS, INC.
410-402 CATONSVL MD MCIMETRO, ATS, INC.
410-403 COCKEYSVL MD MCIMETRO, ATS, INC.
410-404 BALTIMORE MD CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
410-405 FORK MD VERIZON MARYLAND, INC.
410-406 ESSEX MD MCIMETRO, ATS, INC.
410-407 ELKRIDGE MD VERIZON MARYLAND, INC.
410-408 TOWSON MD ARCH WIRELESS HOLDINGS, INC.
410-409 BALTIMORE MD CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
410-410 MD
410-411 MD
410-412 GLENBURNIE MD MCIMETRO, ATS, INC.
410-413 PIKESVILLE MD MCIMETRO, ATS, INC.
410-414 PRINCEFRCK MD VERIZON MARYLAND, INC.
410-415 PIKESVILLE MD VERIZON MARYLAND, INC.
410-416 WATERLO236 MD VERIZON MARYLAND, INC.
410-417 EDGEWOOD MD VERIZON MARYLAND, INC.
410-418 ELLICOTTCY MD VERIZON MARYLAND, INC.
410-419 BALTIMORE MD SPRINT SPECTRUM L.P.
410-420 BEL AIR MD VERIZON MARYLAND, INC.
410-421 SEVERNA PK MD VERIZON MARYLAND, INC.
410-422 SALISBURY MD NEW CINGULAR WIRELESS PCS, LLC - DC
410-423 COLUMBIA MD TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD
410-424 GLENBURNIE MD VERIZON MARYLAND, INC.
410-425 SMITH IS MD VERIZON MARYLAND, INC.
410-426 BALTIMORE MD VERIZON MARYLAND, INC.
410-427 TOWSON MD TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD
410-428 CATONSVL MD NEW CINGULAR WIRELESS PCS, LLC - DC
410-429 WORTHINGTN MD VERIZON MARYLAND, INC.
410-430 SALISBURY MD CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
410-431 SEVERNA PK MD VERIZON MARYLAND, INC.
410-432 SEVERNA PK MD VERIZON MARYLAND, INC.
410-433 BALTIMORE MD VERIZON MARYLAND, INC.
410-434 TOWSON MD ARCH WIRELESS HOLDINGS, INC.
410-435 BALTIMORE MD VERIZON MARYLAND, INC.
410-436 EDGEWOOD MD VERIZON MARYLAND, INC.
410-437 ARGRGBSNIS MD VERIZON MARYLAND, INC.
410-438 SUDLERSVL MD VERIZON MARYLAND, INC.
410-439 ARGRGBSNIS MD VERIZON MARYLAND, INC.
410-440 CATONSVL MD NEW CINGULAR WIRELESS PCS, LLC - DC
410-441 ELKTON MD NEW CINGULAR WIRELESS PCS, LLC - PA
410-442 ELLICOTTCY MD VERIZON MARYLAND, INC.
410-443 EASTON MD LEVEL 3 COMMUNICATIONS, LLC - MD
410-444 BALTIMORE MD VERIZON MARYLAND, INC.
410-445 BALTIMORE MD ARCH WIRELESS HOLDINGS, INC.
410-446 CATONSVL MD NEW CINGULAR WIRELESS PCS, LLC - DC
410-447 COLUMBIA MD ARCH WIRELESS HOLDINGS, INC.
410-448 BALTIMORE MD VERIZON MARYLAND, INC.
410-449 PIKESVILLE MD WEBLINK WIRELESS, INC.
410-450 BALTIMORE MD VERIZON MARYLAND, INC.
410-451 CROFTON MD VERIZON MARYLAND, INC.
410-452 CARDIFF MD VERIZON MARYLAND, INC.
410-453 TOWSON MD VERIZON MARYLAND, INC.
410-454 BALTIMORE MD MCIMETRO, ATS, INC.
410-455 CATONSVL MD VERIZON MARYLAND, INC.
410-456 BALTIMORE MD CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
410-457 DARLINGTON MD VERIZON MARYLAND, INC.
410-458 BALTIMORE MD CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
410-459 FALLSTON MD CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
410-460 ELKRIDGE MD ARCH WIRELESS HOLDINGS, INC.
410-461 ELLICOTTCY MD VERIZON MARYLAND, INC.
410-462 BALTIMORE MD VERIZON MARYLAND, INC.
410-463 TRAPPE MD CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
410-464 BALTIMORE MD VERIZON MARYLAND, INC.
410-465 ELLICOTTCY MD VERIZON MARYLAND, INC.
410-466 BALTIMORE MD VERIZON MARYLAND, INC.
410-467 BALTIMORE MD VERIZON MARYLAND, INC.
410-468 BALTIMORE MD VERIZON MARYLAND, INC.
410-469 BALTIMORE MD VERIZON MARYLAND, INC.
410-470 BALTIMORE MD VERIZON MARYLAND, INC.
410-471 ELKRIDGE MD VERIZON MARYLAND, INC.
410-472 SPARKSGLNC MD VERIZON MARYLAND, INC.
410-473 TOWSON MD ARCH WIRELESS HOLDINGS, INC.
410-474 PRINCEFRCK MD CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
410-475 TOWSON MD ARCH WIRELESS HOLDINGS, INC.
410-476 TRAPPE MD VERIZON MARYLAND, INC.
410-477 SPARROWSPT MD VERIZON MARYLAND, INC.
410-478 ELKRIDGE MD ARCH WIRELESS HOLDINGS, INC.
410-479 DENTON MD VERIZON MARYLAND, INC.
410-480 ELLICOTTCY MD VERIZON MARYLAND, INC.
410-481 BALTIMORE MD VERIZON MARYLAND, INC.
410-482 GREENSBORO MD VERIZON MARYLAND, INC.
410-483 BALTIMORE MD VERIZON MARYLAND, INC.
410-484 PIKESVILLE MD VERIZON MARYLAND, INC.
410-485 BALTIMORE MD VERIZON MARYLAND, INC.
410-486 PIKESVILLE MD VERIZON MARYLAND, INC.
410-487 GLENBURNIE MD MCI WORLDCOM COMMUNICATIONS, INC. - MD
410-488 BALTIMORE MD VERIZON MARYLAND, INC.
410-489 GLENWOOD MD VERIZON MARYLAND, INC.
410-490 CENTREVL MD CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
410-491 CATONSVL MD NEW CINGULAR WIRELESS PCS, LLC - DC
410-492 TOWSON MD ARCH WIRELESS HOLDINGS, INC.
410-493 BALTIMORE MD SPRINT SPECTRUM L.P.
410-494 TOWSON MD VERIZON MARYLAND, INC.
410-495 PRINCEFRCK MD VERIZON MARYLAND, INC.
410-496 RANDALLSTN MD VERIZON MARYLAND, INC.
410-497 PARKVILLE MD COMCAST BUSINESS COMMUNICATIONS, INC. - MD
410-498 COCKEYSVL MD CAVALIER TELEPHONE MID-ATLANTIC. LLC - MD
410-499 BALTIMORE MD SPRINT SPECTRUM L.P.