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 1:20:36 AM on December 22, 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 |
|---|---|---|
| 203-500 | 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 | Ctc Communications Corp. - Ct |
| 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 | Sprint Spectrum, L.p. |
| 203-508 | New Haven, CT | Ctc Communications Corp. - Ct |
| 203-509 | Waterbury, CT | Sprint Spectrum, L.p. |
| 203-510 | Waterbury, CT | Sprint Spectrum, L.p. |
| 203-511 | Connecticut | |
| 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 | Sprint Spectrum, L.p. |
| 203-516 | Ansonia-derby, 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 - Dc |
| 203-519 | Waterbury, CT | Sprint Spectrum, L.p. |
| 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 | Sprint Spectrum, L.p. |
| 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 | Sprint Spectrum, L.p. |
| 203-538 | Huntington, CT | Choice One Communications, Inc. - Ct |
| 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 | Sprint Spectrum, L.p. |
| 203-546 | Danbury, CT | Teleport Communications America, Llc - Ct |
| 203-547 | Stamford, CT | Choice One Communications, Inc. - Ct |
| 203-548 | Stamford, CT | Level 3 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 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 |
| 203-555 | Connecticut | Multiple Ocn Listing |
| 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 | Sprint Spectrum, L.p. |
| 203-566 | Stamford, CT | Mcimetro Access Transmission Services Llc - Ct |
| 203-567 | Huntington, CT | Paetec Communications, Llc - Ct |
| 203-568 | Waterbury, CT | Paetec Communications, Llc - 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 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 | Cablevision Lightpath, Inc. - Ct |
| 203-588 | Stamford, CT | Cablevision Lightpath, Inc. - Ct |
| 203-589 | New Haven, CT | Sprint Spectrum, L.p. |
| 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 | Usa Mobility Wireless, 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 | At&t - Local |
December 20, 2024