There are 800 phone number prefixes within area code 203. Additionally, there are more than 2,000 phone numbers in this area code that have received at least one user report. The location of calls from area code 203 is Connecticut, USA. Most numbers in this area code are in US Eastern time, where the time is currently 2:03:18 PM on April 25, 2024.
Choose a phone number from the list below to browse user reports for . You can also use the search box above to search for user reports about any phone number, or to file a report about any phone number.
| Prefix | City / State | Primary Telco |
|---|---|---|
| 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 Communications, Llc - Ct |
| 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 | At&t - Local |
| 203-409 | Old Greenwich, CT | Teleport Communications America, Llc - Ct |
| 203-410 | New Haven, CT | Sprint Spectrum, L.p. |
| 203-411 | Connecticut | |
| 203-412 | New Haven, CT | American Messaging Services, Llc |
| 203-413 | Greenwich, CT | Paetec Communications, Inc. - Ny |
| 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 | Sprint Spectrum, L.p. |
| 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 | Southern New England Telco Dba Frontier Comm Of 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 | Sprint Spectrum, L.p. |
| 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 | At&t - Local |
| 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 |
| 203-471 | Connecticut | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-472 | Connecticut | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-473 | Connecticut | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-474 | Connecticut | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-475 | Connecticut | Multiple Ocn Listing |
| 203-476 | Connecticut | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-477 | New Haven, CT | Usa Mobility Wireless, Inc. |
| 203-478 | Connecticut | Southern New England Telco Dba Frontier Comm Of Ct |
| 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 | Global Crossing Local Services, Inc. - 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 | Sprint Spectrum, L.p. |
| 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 |
April 24, 2024