Area Codes > 203 > Central Office Codes
Exchange | Rate Center | State | Operating Company |
---|---|---|---|
203-505 | NORWALK | CT | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
203-506 | NEW HAVEN | CT | NEW CINGULAR WIRELESS PCS, LLC - MA |
203-507 | NEW HAVEN | CT | SPRINT SPECTRUM L.P. |
203-508 | NEW HAVEN | CT | CTC COMMUNICATIONS - CT |
203-509 | WATERBURY | CT | NEXTEL COMMUNICATIONS, INC. |
203-510 | WATERBURY | CT | SPRINT SPECTRUM L.P. |
203-511 | CT | ||
203-512 | DANBURY | CT | OMNIPOINT COMMUNICATIONS, INC. - CT |
203-513 | HUNTINGTON | CT | AT&T LOCAL |
203-514 | MERIDEN | CT | TELEPORT COMMUNICATIONS GROUP - NEW YORK - CT |
203-515 | NORWALK | CT | NEXTEL COMMUNICATIONS, INC. |
203-516 | ANSONIDRBY | CT | GLOBAL CROSSING LOCAL SERVICES, INC.-CT |
203-517 | STAMFORD | CT | LEVEL 3 COMMUNICATIONS, LLC - CT |
203-518 | WATERBURY | CT | NEW CINGULAR WIRELESS PCS, LLC - MA |
203-519 | WATERBURY | CT | ARCH WIRELESS HOLDINGS, INC. |
203-520 | BRIDGEPORT | CT | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
203-521 | BRIDGEPORT | CT | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
203-522 | BRIDGEPORT | CT | NEW CINGULAR WIRELESS PCS, LLC - MA |
203-523 | NORWALK | CT | TELEPORT COMMUNICATIONS GROUP - NEW YORK - CT |
203-524 | STAMFORD | CT | NEW CINGULAR WIRELESS PCS, LLC - MA |
203-525 | WATERBURY | CT | NEW CINGULAR WIRELESS PCS, LLC - MA |
203-526 | BRIDGEPORT | CT | SPRINT SPECTRUM L.P. |
203-527 | WATERBURY | CT | SOUTHERN NEW ENGLAND TELEPHONE CO. |
203-528 | WATERBURY | CT | LEVEL 3 COMMUNICATIONS, LLC - CT |
203-529 | WILTON | CT | AT&T LOCAL |
203-530 | NEW HAVEN | CT | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
203-531 | BYRAM | CT | VERIZON NEW YORK, INC. |
203-532 | BYRAM | CT | VERIZON NEW YORK, INC. |
203-533 | GUILFORD | CT | LEVEL 3 COMMUNICATIONS, LLC - CT |
203-534 | BRIDGEPORT | CT | SOUTHERN NEW ENGLAND TELEPHONE CO. |
203-535 | NEW HAVEN | CT | COMCAST PHONE OF CONNECTICUT, INC. - CT |
203-536 | STAMFORD | CT | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
203-537 | MERIDEN | CT | NEXTEL COMMUNICATIONS, INC. |
203-538 | HUNTINGTON | CT | CHOICE ONE COMMUNICATIONS, INC. - CT |
203-539 | STAMFORD | CT | SOUTHERN NEW ENGLAND TELEPHONE CO. |
203-540 | BRIDGEPORT | CT | NEW CINGULAR WIRELESS PCS, LLC - MA |
203-541 | STAMFORD | CT | SOUTHERN NEW ENGLAND TELEPHONE CO. |
203-542 | GREENWICH | CT | AT&T LOCAL |
203-543 | BRIDGEPORT | CT | OMNIPOINT COMMUNICATIONS, INC. - CT |
203-544 | GEORGETOWN | CT | SOUTHERN NEW ENGLAND TELEPHONE CO. |
203-545 | BRIDGEPORT | CT | SPRINT SPECTRUM L.P. |
203-546 | DANBURY | CT | TELEPORT COMMUNICATIONS GROUP - NEW YORK - CT |
203-547 | STAMFORD | CT | GLOBAL NAPS, INC. - CT |
203-548 | STAMFORD | CT | BROADWING COMMUNICATIONS, LLC - CT |
203-549 | BRIDGEPORT | CT | CHOICE ONE COMMUNICATIONS, INC. - CT |
203-550 | STAMFORD | CT | OMNIPOINT COMMUNICATIONS, INC. - CT |
203-551 | BRIDGEPORT | CT | TELEPORT COMMUNICATIONS GROUP - NEW YORK - CT |
203-552 | BYRAM | CT | VERIZON NEW YORK, INC. |
203-553 | NEW HAVEN | CT | SOUTHERN NEW ENGLAND TELEPHONE CO. |
203-554 | STAMFORD | CT | NEW CINGULAR WIRELESS PCS, LLC - MA |
203-555 | NEW HAVEN | CT | SOUTHERN NEW ENGLAND TELEPHONE CO. |
203-556 | BRIDGEPORT | CT | NEW CINGULAR WIRELESS PCS, LLC - MA |
203-557 | WESTPORT | CT | CABLEVISION LIGHTPATH, INC. - CT |
203-558 | WATERBURY | CT | NEW CINGULAR WIRELESS PCS, LLC - MA |
203-559 | DARIEN | CT | TELEPORT COMMUNICATIONS GROUP - NEW YORK - CT |
203-560 | WATERBURY | CT | NEW CINGULAR WIRELESS PCS, LLC - MA |
203-561 | STAMFORD | CT | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
203-562 | NEW HAVEN | CT | SOUTHERN NEW ENGLAND TELEPHONE CO. |
203-563 | WILTON | CT | SOUTHERN NEW ENGLAND TELEPHONE CO. |
203-564 | STAMFORD | CT | AT&T LOCAL |
203-565 | WATERBURY | CT | SPRINT SPECTRUM L.P. |
203-566 | STAMFORD | CT | BROOKS FIBER COMMUNICATIONS - CONNECTICUT |
203-567 | HUNTINGTON | CT | PAETEC COMMUNICATIONS, INC. - CT |
203-568 | WATERBURY | CT | PAETEC COMMUNICATIONS, INC. - CT |
203-569 | STAMFORD | CT | CABLEVISION LIGHTPATH, INC. - CT |
203-570 | STAMFORD | CT | OMNIPOINT COMMUNICATIONS, INC. - CT |
203-571 | WESTPORT | CT | AT&T LOCAL |
203-572 | BRIDGEPORT | CT | SPRINT SPECTRUM L.P. |
203-573 | WATERBURY | CT | SOUTHERN NEW ENGLAND TELEPHONE CO. |
203-574 | WATERBURY | CT | SOUTHERN NEW ENGLAND TELEPHONE CO. |
203-575 | WATERBURY | CT | SOUTHERN NEW ENGLAND TELEPHONE CO. |
203-576 | BRIDGEPORT | CT | SOUTHERN NEW ENGLAND TELEPHONE CO. |
203-577 | WATERBURY | CT | SOUTHERN NEW ENGLAND TELEPHONE CO. |
203-578 | WATERBURY | CT | SOUTHERN NEW ENGLAND TELEPHONE CO. |
203-579 | BRIDGEPORT | CT | SOUTHERN NEW ENGLAND TELEPHONE CO. |
203-580 | WATERBURY | CT | ARCH WIRELESS HOLDINGS, INC. |
203-581 | BRIDGEPORT | CT | SOUTHERN NEW ENGLAND TELEPHONE CO. |
203-582 | NEW HAVEN | CT | SOUTHERN NEW ENGLAND TELEPHONE CO. |
203-583 | BRIDGEPORT | CT | LEVEL 3 COMMUNICATIONS, LLC - CT |
203-585 | STAMFORD | CT | SOUTHERN NEW ENGLAND TELEPHONE CO. |
203-586 | WOODBURY | CT | TELEPORT COMMUNICATIONS GROUP - NEW YORK - CT |
203-587 | GEORGETOWN | CT | CABLEVISION LIGHTPATH, INC. - CT |
203-588 | STAMFORD | CT | CABLEVISION LIGHTPATH, INC. - CT |
203-589 | NEW HAVEN | CT | SPRINT SPECTRUM L.P. |
203-591 | WATERBURY | CT | SOUTHERN NEW ENGLAND TELEPHONE CO. |
203-592 | WATERBURY | CT | NEW CINGULAR WIRELESS PCS, LLC - MA |
203-593 | NORWALK | CT | ARCH WIRELESS HOLDINGS, INC. |
203-594 | NEW CANAAN | CT | CABLEVISION LIGHTPATH, INC. - CT |
203-595 | STAMFORD | CT | SOUTHERN NEW ENGLAND TELEPHONE CO. |
203-596 | WATERBURY | CT | SOUTHERN NEW ENGLAND TELEPHONE CO. |
203-597 | WATERBURY | CT | SOUTHERN NEW ENGLAND TELEPHONE CO. |
203-598 | WATERBURY | CT | SOUTHERN NEW ENGLAND TELEPHONE CO. |
203-599 | MERIDEN | CT | AT&T LOCAL |
203-601 | TRUMBULL | CT | TELEPORT COMMUNICATIONS GROUP - NEW YORK - CT |
203-602 | STAMFORD | CT | SOUTHERN NEW ENGLAND TELEPHONE CO. |
203-603 | NEW HAVEN | CT | SOUTHERN NEW ENGLAND TELEPHONE CO. |
203-604 | NORWALK | CT | BROADWING COMMUNICATIONS, LLC - CT |
203-605 | NEW HAVEN | CT | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
203-606 | NEW HAVEN | CT | OMNIPOINT COMMUNICATIONS, INC. - CT |
203-607 | STAMFORD | CT | BROOKS FIBER COMMUNICATIONS - CONNECTICUT |