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Area Codes > 203 > Central Office Codes

Exchange Rate Center State Operating Company
203-405 WOODBURY CT PAETEC COMMUNICATIONS, INC. - CT
203-406 STAMFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-407 NEW HAVEN CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-408 REDDING CT AT&T LOCAL
203-409 OLDGRNWICH CT TELEPORT COMMUNICATIONS GROUP - NEW YORK - CT
203-410 NEW HAVEN CT NEXTEL COMMUNICATIONS, INC.
203-411 CT
203-412 NEW HAVEN CT AMERICAN MESSAGING (AM), INC.
203-413 GREENWICH CT PAETEC COMMUNICATIONS, INC. - NY
203-414 BRIDGEPORT CT NEW CINGULAR WIRELESS PCS, LLC - MA
203-415 NEW HAVEN CT NEW CINGULAR WIRELESS PCS, LLC - MA
203-416 BRIDGEPORT CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-417 DANBURY CT NEW CINGULAR WIRELESS PCS, LLC - MA
203-418 FAIRFIELD CT TELEPORT COMMUNICATIONS GROUP - NEW YORK - CT
203-419 WATERBURY CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-420 MERIDEN CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-421 MADISON CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-422 GREENWICH CT VERIZON NEW YORK, INC.
203-423 WILTON CT TELEPORT COMMUNICATIONS GROUP - NEW YORK - CT
203-424 DARIEN CT SPRINT SPECTRUM L.P.
203-425 STAMFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-426 NEWTOWN CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-427 MERIDEN CT MCIMETRO, ATS, INC.
203-428 STAMFORD CT BROOKS FIBER COMMUNICATIONS - CONNECTICUT
203-429 WESTPORT CT BROOKS FIBER COMMUNICATIONS - CONNECTICUT
203-430 NEW HAVEN CT NEW CINGULAR WIRELESS PCS, LLC - MA
203-431 RIDGEFIELD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-432 NEW HAVEN CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-433 BRANFORD CT COMCAST PHONE OF CONNECTICUT, INC. - CT
203-434 NORWALK CT OMNIPOINT COMMUNICATIONS, INC. - CT
203-435 NEW HAVEN CT OMNIPOINT COMMUNICATIONS, INC. - CT
203-436 NEW HAVEN CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-437 WATERBURY CT BROOKS FIBER COMMUNICATIONS - CONNECTICUT
203-438 RIDGEFIELD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-439 CHESHIRE CT COX CONNECTICUT TELECOM, LLC
203-440 MERIDEN CT COX CONNECTICUT TELECOM, LLC
203-441 WOLCOTT CT TELEPORT COMMUNICATIONS GROUP - NEW YORK - CT
203-442 NEW CANAAN CT TELEPORT COMMUNICATIONS GROUP - NEW YORK - CT
203-443 MERIDEN CT BROOKS FIBER COMMUNICATIONS - CONNECTICUT
203-444 NEW HAVEN CT NEW CINGULAR WIRELESS PCS, LLC - MA
203-445 TRUMBULL CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-446 ANSONIDRBY CT TELEPORT COMMUNICATIONS GROUP - NEW YORK - CT
203-447 HUNTINGTON CT TELEPORT COMMUNICATIONS GROUP - NEW YORK - CT
203-448 DANBURY CT BROOKS FIBER COMMUNICATIONS - CONNECTICUT
203-449 BRIDGEPORT CT SPRINT SPECTRUM L.P.
203-450 BRIDGEPORT CT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT
203-451 WESTPORT CT NEW CINGULAR WIRELESS PCS, LLC - MA
203-452 TRUMBULL CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-453 GUILFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-454 WESTPORT CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-455 BRIDGEPORT CT BROOKS FIBER COMMUNICATIONS - CONNECTICUT
203-456 MERIDEN CT ARCH WIRELESS HOLDINGS, INC.
203-457 GUILFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-458 GUILFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-459 TRUMBULL CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-460 DANBURY CT AT&T LOCAL
203-461 STAMFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-462 STAMFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-463 SEYMOUR CT TELEPORT COMMUNICATIONS GROUP - NEW YORK - CT
203-464 NEW HAVEN CT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT
203-465 WATERBURY CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-466 NEW HAVEN CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-467 NEW HAVEN CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-468 NEW HAVEN CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-469 NEW HAVEN CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-470 DANBURY CT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT
203-471 XXXXXXXXXX CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-472 XXXXXXXXXX CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-473 XXXXXXXXXX CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-474 XXXXXXXXXX CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-475 XXXXXXXXXX CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-476 XXXXXXXXXX CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-477 NEW HAVEN CT ARCH WIRELESS HOLDINGS, INC.
203-478 XXXXXXXXXX CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-479 NEW HAVEN CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-480 FAIRFIELD CT BROOKS FIBER COMMUNICATIONS - CONNECTICUT
203-481 BRANFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-482 DANBURY CT NEW CINGULAR WIRELESS PCS, LLC - MA
203-483 BRANFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-484 BRANFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-485 GREENWICH CT CABLEVISION LIGHTPATH, INC. - CT
203-486 WOODBURY CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-487 STAMFORD CT GLOBAL CROSSING LOCAL SERVICES, INC.-CT
203-488 BRANFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-489 NORWALK CT ARCH WIRELESS HOLDINGS, INC.
203-490 NAUGATUCK CT TELEPORT COMMUNICATIONS GROUP - NEW YORK - CT
203-491 NEW HAVEN CT ARCH WIRELESS HOLDINGS, INC.
203-492 NEW HAVEN CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-493 GEORGETOWN CT LEVEL 3 COMMUNICATIONS, LLC - CT
203-494 NEW HAVEN CT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT
203-495 NEW HAVEN CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-496 GREENWICH CT NEXTEL COMMUNICATIONS, INC.
203-497 NEW HAVEN CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-498 NEW HAVEN CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-499 NEW HAVEN CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-500 NEW HAVEN CT NEW CINGULAR WIRELESS PCS, LLC - MA
203-501 NEW HAVEN CT ARCH WIRELESS HOLDINGS, INC.
203-502 BRIDGEPORT CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-503 NEW HAVEN CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-504 STAMFORD CT CTC COMMUNICATIONS - CT