Area Code 203 - Connecticut
Every 203 prefix with its city and carrier. Got a specific number? Search it here.
Area code 203 serves Connecticut (Eastern time zone) with 778 assigned prefixes. Major rate centers include New Haven, Stamford, Bridgeport, Norwalk, Danbury, Waterbury, Greenwich, Meriden. Received a call from a 203 number? Type the full number into the search box above to see its city, carrier, and community reports.
Prefixes in area code 203
| Prefix | City | State | Carrier |
|---|---|---|---|
| 203-510 | Waterbury | CT | METROPCS, INC. |
| 203-512 | Danbury | CT | OMNIPOINT COMMUNICATIONS, INC. - CT |
| 203-513 | Huntington | CT | AT&T - LOCAL |
| 203-514 | Meriden | CT | TELEPORT COMMUNICATIONS AMERICA, LLC - CT |
| 203-515 | Norwalk | CT | OMNIPOINT COMMUNICATIONS, INC. - CT |
| 203-516 | Ansonia-Derby | CT | LEVEL 3 COMMUNICATIONS, LLC - CT |
| 203-517 | Stamford | CT | LEVEL 3 COMMUNICATIONS, LLC - CT |
| 203-518 | Waterbury | CT | NEW CINGULAR WIRELESS PCS, LLC - DC |
| 203-519 | Waterbury | CT | METROPCS, 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 - DC |
| 203-523 | Norwalk | CT | TELEPORT COMMUNICATIONS AMERICA, LLC - CT |
| 203-524 | Stamford | CT | NEW CINGULAR WIRELESS PCS, LLC - DC |
| 203-525 | Waterbury | CT | NEW CINGULAR WIRELESS PCS, LLC - DC |
| 203-526 | Bridgeport | CT | METROPCS, INC. |
| 203-527 | Waterbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 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 TELCO DBA FRONTIER COMM OF CT |
| 203-535 | New Haven | CT | COMCAST IP PHONE, LLC |
| 203-536 | Stamford | CT | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
| 203-537 | Meriden | CT | METROPCS, INC. |
| 203-538 | Huntington | CT | PAETEC ITEL, LLC |
| 203-539 | Stamford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-540 | Bridgeport | CT | NEW CINGULAR WIRELESS PCS, LLC - DC |
| 203-541 | Stamford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-542 | Greenwich | CT | AT&T - LOCAL |
| 203-543 | Bridgeport | CT | OMNIPOINT COMMUNICATIONS, INC. - CT |
| 203-544 | Georgetown | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-545 | Bridgeport | CT | METROPCS, INC. |
| 203-546 | Danbury | CT | TELEPORT COMMUNICATIONS AMERICA, LLC - CT |
| 203-547 | Stamford | CT | ONVOY, LLC - CT |
| 203-548 | Stamford | CT | LEVEL 3 COMMUNICATIONS, LLC - CT |
| 203-549 | Bridgeport | CT | PAETEC ITEL, LLC |
| 203-550 | Stamford | CT | OMNIPOINT COMMUNICATIONS, INC. - CT |
| 203-551 | Bridgeport | CT | TELEPORT COMMUNICATIONS AMERICA, LLC - CT |
| 203-552 | Byram | CT | VERIZON NEW YORK, INC. |
| 203-553 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-554 | Stamford | CT | NEW CINGULAR WIRELESS PCS, LLC - DC |
| 203-556 | Bridgeport | CT | NEW CINGULAR WIRELESS PCS, LLC - DC |
| 203-557 | Westport | CT | CABLEVISION LIGHTPATH, INC. - CT |
| 203-558 | Waterbury | CT | NEW CINGULAR WIRELESS PCS, LLC - DC |
| 203-559 | Darien | CT | TELEPORT COMMUNICATIONS AMERICA, LLC - CT |
| 203-560 | Waterbury | CT | NEW CINGULAR WIRELESS PCS, LLC - DC |
| 203-561 | Stamford | CT | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
| 203-562 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-563 | Wilton | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-564 | Stamford | CT | AT&T - LOCAL |
| 203-565 | Waterbury | CT | METROPCS, INC. |
| 203-566 | Stamford | CT | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT |
| 203-567 | Huntington | CT | PAETEC ITEL, LLC |
| 203-568 | Waterbury | CT | PAETEC ITEL, LLC |
| 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 | OMNIPOINT COMMUNICATIONS, INC. - CT |
| 203-573 | Waterbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-574 | Waterbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-575 | Waterbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-576 | Bridgeport | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-577 | Waterbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-578 | Waterbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-579 | Bridgeport | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-580 | Byram | CT | PEERLESS NETWORK OF CONNECTICUT, LLC - CT |
| 203-581 | Bridgeport | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-582 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-583 | Bridgeport | CT | LEVEL 3 COMMUNICATIONS, LLC - CT |
| 203-584 | New Haven | CT | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
| 203-585 | Stamford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-586 | Woodbury | CT | TELEPORT COMMUNICATIONS AMERICA, LLC - CT |
| 203-587 | Georgetown | CT | CSC VOICE, LLC |
| 203-588 | Stamford | CT | CABLEVISION LIGHTPATH, INC. - CT |
| 203-589 | New Haven | CT | OMNIPOINT COMMUNICATIONS, INC. - CT |
| 203-590 | Trumbull | CT | LEVEL 3 COMMUNICATIONS, LLC - CT |
| 203-591 | Waterbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-592 | Waterbury | CT | NEW CINGULAR WIRELESS PCS, LLC - DC |
| 203-593 | Norwalk | CT | SPOK, INC. |
| 203-594 | New Canaan | CT | CABLEVISION LIGHTPATH, INC. - CT |
| 203-595 | Stamford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-596 | Waterbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-597 | Waterbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-598 | Waterbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-599 | Meriden | CT | LEVEL 3 COMMUNICATIONS, LLC - CT |
| 203-600 | Meriden | CT | METROPCS, INC. |
| 203-601 | Trumbull | CT | TELEPORT COMMUNICATIONS AMERICA, LLC - CT |
| 203-602 | Stamford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-603 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-604 | Norwalk | CT | LEVEL 3 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 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT |
| 203-608 | Meriden | CT | PAETEC ITEL, LLC |
| 203-609 | Stamford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-610 | Bridgeport | CT | PAETEC ITEL, LLC |
| 203-612 | Bridgeport | CT | LEVEL 3 COMMUNICATIONS, LLC - CT |
| 203-613 | Norwalk | CT | METROPCS, INC. |
| 203-614 | Stamford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-615 | Bridgeport | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-616 | Danbury | CT | LEVEL 3 COMMUNICATIONS, LLC - CT |
| 203-617 | Danbury | CT | OMNIPOINT COMMUNICATIONS, INC. - CT |
| 203-618 | Greenwich | CT | VERIZON NEW YORK, INC. |
| 203-619 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-620 | Darien | CT | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT |
| 203-621 | Darien | CT | PAETEC ITEL, LLC |
| 203-622 | Greenwich | CT | VERIZON NEW YORK, INC. |
| 203-623 | New Haven | CT | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
| 203-624 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-625 | Greenwich | CT | VERIZON NEW YORK, INC. |
| 203-626 | Wallingford | CT | AT&T - LOCAL |
| 203-627 | New Haven | CT | OMNIPOINT COMMUNICATIONS, INC. - CT |
| 203-628 | Danbury | CT | CABLEVISION LIGHTPATH, INC. - CT |
| 203-629 | Greenwich | CT | VERIZON NEW YORK, INC. |
| 203-630 | Meriden | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-631 | Meriden | CT | NEW CINGULAR WIRELESS PCS, LLC - DC |
| 203-632 | Naugatuck | CT | PAETEC ITEL, LLC |
| 203-633 | Wolcott | CT | LEVEL 3 COMMUNICATIONS, LLC - CT |
| 203-634 | Meriden | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-635 | Westport | CT | LEVEL 3 COMMUNICATIONS, LLC - CT |
| 203-636 | Darien | CT | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT |
| 203-637 | Old Greenwich | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-638 | Trumbull | CT | PAETEC ITEL, LLC |
| 203-639 | Meriden | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-640 | New Haven | CT | NEW CINGULAR WIRELESS PCS, LLC - DC |
| 203-641 | New Haven | CT | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
| 203-642 | Norwalk | CT | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT |
| 203-643 | Branford | CT | PAETEC ITEL, LLC |
| 203-644 | Norwalk | CT | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
| 203-645 | New Haven | CT | NEW CINGULAR WIRELESS PCS, LLC - DC |
| 203-646 | Branford | CT | ONVOY, LLC - CT |
| 203-647 | Milford | CT | PAETEC ITEL, LLC |
| 203-648 | Danbury | CT | LEVEL 3 COMMUNICATIONS, LLC - CT |
| 203-649 | Cheshire | CT | PAETEC ITEL, LLC |
| 203-650 | Bridgeport | CT | METROPCS, INC. |
| 203-651 | Cheshire | CT | PAETEC ITEL, LLC |
| 203-652 | New Canaan | CT | PAETEC ITEL, LLC |
| 203-653 | Stamford | CT | PAETEC ITEL, LLC |
| 203-654 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-655 | Darien | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-656 | Darien | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-657 | New Haven | CT | AMERICAN MESSAGING SERVICES, LLC |
| 203-658 | Stamford | CT | TELEPORT COMMUNICATIONS AMERICA, LLC - CT |
| 203-659 | Fairfield | CT | PAETEC ITEL, LLC |
| 203-660 | Byram | CT | ONVOY, LLC - CT |
| 203-661 | Greenwich | CT | VERIZON NEW YORK, INC. |
| 203-662 | Darien | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
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