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 |
|---|---|---|---|
| 203-352 | Stamford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-353 | Stamford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-354 | Norwalk | CT | CABLEVISION LIGHTPATH, INC. - CT |
| 203-355 | Stamford | CT | CABLEVISION LIGHTPATH, INC. - CT |
| 203-356 | Stamford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-357 | Stamford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-358 | Stamford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-359 | Stamford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-360 | Bridgeport | CT | METROPCS, INC. |
| 203-361 | New Haven | CT | LEVEL 3 COMMUNICATIONS, LLC - CT |
| 203-362 | Bridgeport | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-363 | Stamford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-364 | Newtown | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-365 | Bridgeport | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-366 | Bridgeport | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-367 | Bridgeport | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-368 | Bridgeport | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-369 | Old Greenwich | CT | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT |
| 203-370 | New Haven | CT | AMERICAN MESSAGING SERVICES, LLC |
| 203-371 | Bridgeport | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-372 | Bridgeport | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-373 | Bridgeport | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-374 | Bridgeport | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-375 | Bridgeport | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-376 | New Haven | CT | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
| 203-377 | Bridgeport | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-378 | Bridgeport | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-379 | Meriden | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-380 | Bridgeport | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-381 | Bridgeport | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-382 | Bridgeport | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-383 | Bridgeport | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-384 | Bridgeport | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-385 | Bridgeport | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-386 | Bridgeport | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-387 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-388 | Stamford | CT | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT |
| 203-389 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-390 | New Haven | CT | TELEPORT COMMUNICATIONS AMERICA, LLC - CT |
| 203-391 | Stamford | CT | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT |
| 203-392 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-393 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-394 | Bridgeport | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-395 | Bridgeport | CT | METROPCS, INC. |
| 203-396 | Bridgeport | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-397 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-398 | Norwalk | CT | SPOK, INC. |
| 203-399 | Stamford | CT | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT |
| 203-400 | Trumbull | CT | NEW CINGULAR WIRELESS PCS, LLC - DC |
| 203-401 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-402 | Huntington | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-403 | Ridgefield | CT | TELEPORT COMMUNICATIONS AMERICA, LLC - CT |
| 203-404 | New Haven | CT | LEVEL 3 COMMUNICATIONS, LLC - CT |
| 203-405 | Woodbury | CT | PAETEC ITEL, LLC |
| 203-406 | Stamford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-407 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-408 | Redding | CT | BANDWIDTH.COM CLEC, LLC - CT |
| 203-409 | Old Greenwich | CT | TELEPORT COMMUNICATIONS AMERICA, LLC - CT |
| 203-410 | New Haven | CT | OMNIPOINT COMMUNICATIONS, INC. - CT |
| 203-412 | New Haven | CT | AMERICAN MESSAGING SERVICES, LLC |
| 203-413 | Greenwich | CT | PAETEC ITEL, LLC |
| 203-414 | Bridgeport | CT | NEW CINGULAR WIRELESS PCS, LLC - DC |
| 203-415 | New Haven | CT | NEW CINGULAR WIRELESS PCS, LLC - DC |
| 203-416 | Bridgeport | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-417 | Danbury | CT | NEW CINGULAR WIRELESS PCS, LLC - DC |
| 203-418 | Fairfield | CT | TELEPORT COMMUNICATIONS AMERICA, LLC - CT |
| 203-419 | Waterbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-420 | Meriden | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-421 | Madison | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-422 | Greenwich | CT | VERIZON NEW YORK, INC. |
| 203-423 | Wilton | CT | TELEPORT COMMUNICATIONS AMERICA, LLC - CT |
| 203-424 | Darien | CT | METROPCS, INC. |
| 203-425 | Stamford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-426 | Newtown | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-427 | Meriden | CT | MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
| 203-428 | Stamford | CT | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT |
| 203-429 | Westport | CT | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT |
| 203-430 | New Haven | CT | NEW CINGULAR WIRELESS PCS, LLC - DC |
| 203-431 | Ridgefield | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-432 | New Haven | CT | BANDWIDTH.COM CLEC, LLC - CT |
| 203-433 | Branford | CT | COMCAST IP PHONE, LLC |
| 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 TELCO DBA FRONTIER COMM OF CT |
| 203-437 | Waterbury | CT | MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
| 203-438 | Ridgefield | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-439 | Cheshire | CT | COMCAST IP PHONE, LLC |
| 203-440 | Meriden | CT | COMCAST IP PHONE, LLC |
| 203-441 | Wolcott | CT | TELEPORT COMMUNICATIONS AMERICA, LLC - CT |
| 203-442 | New Canaan | CT | TELEPORT COMMUNICATIONS AMERICA, LLC - CT |
| 203-443 | Meriden | CT | MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
| 203-444 | New Haven | CT | NEW CINGULAR WIRELESS PCS, LLC - DC |
| 203-445 | Trumbull | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-446 | Ansonia-Derby | CT | TELEPORT COMMUNICATIONS AMERICA, LLC - CT |
| 203-447 | Huntington | CT | TELEPORT COMMUNICATIONS AMERICA, LLC - CT |
| 203-448 | Danbury | CT | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT |
| 203-449 | Bridgeport | CT | METROPCS, INC. |
| 203-450 | Bridgeport | CT | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
| 203-451 | Westport | CT | NEW CINGULAR WIRELESS PCS, LLC - DC |
| 203-452 | Trumbull | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-453 | Guilford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-454 | Westport | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-455 | Bridgeport | CT | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT |
| 203-456 | Danbury | CT | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
| 203-457 | Guilford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-458 | Guilford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-459 | Trumbull | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-460 | Danbury | CT | METROPCS, INC. |
| 203-461 | Stamford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-462 | Stamford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-463 | Seymour | CT | TELEPORT COMMUNICATIONS AMERICA, LLC - CT |
| 203-464 | New Haven | CT | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
| 203-465 | Waterbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-466 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-467 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-468 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-469 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-470 | Danbury | CT | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
| 203-477 | New Haven | CT | SPOK, INC. |
| 203-479 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-480 | Fairfield | CT | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT |
| 203-481 | Branford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-482 | Danbury | CT | NEW CINGULAR WIRELESS PCS, LLC - DC |
| 203-483 | Branford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-484 | Branford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-485 | Greenwich | CT | CABLEVISION LIGHTPATH, INC. - CT |
| 203-486 | Woodbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-487 | Stamford | CT | LEVEL 3 COMMUNICATIONS, LLC - CT |
| 203-488 | Branford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-489 | Greenwich | CT | CABLEVISION LIGHTPATH, INC. - CT |
| 203-490 | Naugatuck | CT | TELEPORT COMMUNICATIONS AMERICA, LLC - CT |
| 203-491 | Newtown | CT | BANDWIDTH.COM CLEC, LLC - CT |
| 203-492 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 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 TELCO DBA FRONTIER COMM OF CT |
| 203-496 | Greenwich | CT | METROPCS, INC. |
| 203-497 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-498 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-499 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-500 | New Haven | CT | NEW CINGULAR WIRELESS PCS, LLC - DC |
| 203-501 | Danbury | CT | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
| 203-502 | Bridgeport | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-503 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-504 | Stamford | CT | PAETEC ITEL, LLC |
| 203-505 | Norwalk | CT | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
| 203-506 | New Haven | CT | NEW CINGULAR WIRELESS PCS, LLC - DC |
| 203-507 | New Haven | CT | OMNIPOINT COMMUNICATIONS, INC. - CT |
| 203-508 | New Haven | CT | PAETEC ITEL, LLC |
| 203-509 | Waterbury | CT | METROPCS, INC. |
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