The 203 Area Code (or Area Code 203) is located in the state of CT. Area Code 203 is one of the 269 3-digit telephone area codes in the USA. It covers roughly 2.85 million unique phone numbers and 10.3 million individuals near the city of New Haven
Area code 203 was put into service 01/01/1947. In 1995 Area code 203 was split to form area code 860. In 2009 area code 203 was overlaid with area code 475.
Ansonia, Branford, Bridgeport, Cheshire, Danbury, Darien, Derby, Fairfield, Greenwich, Guilford, Huntington, Madison, Meriden, Milford, Naugatuck, New Canaan, New Haven, Newtown, Northford, Norwalk, Old Greenwich, Redding, Ridgefield, Seymour, Southbury, Stamford, Trumbull, Wallingford, Waterbury, Westport, Wilton, Wolcott, Woodbury.
| PREFIX | COUNTY | CITY | CARRIER | TYPE |
|---|---|---|---|---|
| 203-485 | Fairfield | Greenwich | Cablevision Lightpath, Inc. - CT | Landline |
| 203-486 | New Haven | Southbury | Southern New England Telco Dba Frontier Comm Of CT | Landline |
| 203-487 | Fairfield | Stamford | Global Crossing Local Services, Inc.-Ct | Landline |
| 203-488 | New Haven | Branford | Southern New England Telco Dba Frontier Comm Of CT | Landline |
| 203-489 | Fairfield | Greenwich | Cablevision Lightpath, Inc. - CT | Landline |
| 203-490 | New Haven | Naugatuck | Teleport Communications America, Llc - CT | Landline |
| 203-491 | Fairfield | Newtown | Bandwidth.com Clec, Llc - CT | Landline |
| 203-492 | New Haven | New Haven | Southern New England Telco Dba Frontier Comm Of CT | Landline |
| 203-493 | Fairfield | Redding | Level 3 Communications, Llc - CT | Landline |
| 203-494 | New Haven | New Haven | Cellco Partnership Dba Verizon Wireless - CT | Wireless |
| 203-495 | New Haven | New Haven | Southern New England Telco Dba Frontier Comm Of CT | Landline |
| 203-496 | Fairfield | Greenwich | Sprint Spectrum L.p. | Wireless |
| 203-497 | New Haven | New Haven | Southern New England Telco Dba Frontier Comm Of CT | Landline |
| 203-498 | New Haven | New Haven | Southern New England Telco Dba Frontier Comm Of CT | Landline |
| 203-499 | New Haven | New Haven | Southern New England Telco Dba Frontier Comm Of CT | Landline |
| 203-500 | New Haven | New Haven | New Cingular Wireless Pcs, Llc - DC | Wireless |
| 203-501 | Fairfield | Danbury | Cellco Partnership Dba Verizon Wireless - CT | Wireless |
| 203-502 | Fairfield | Bridgeport | Southern New England Telco Dba Frontier Comm Of CT | Landline |
| 203-503 | New Haven | New Haven | Southern New England Telco Dba Frontier Comm Of CT | Landline |
| 203-504 | Fairfield | Stamford | Ctc Communications Corp. - CT | Landline |
| 203-505 | Fairfield | Norwalk | Cellco Partnership Dba Verizon Wireless - CT | Landline |
| 203-506 | New Haven | New Haven | New Cingular Wireless Pcs, Llc - DC | Wireless |
| 203-507 | New Haven | New Haven | Sprint Spectrum L.p. | Wireless |
| 203-508 | New Haven | New Haven | Ctc Communications Corp. - CT | Landline |
| 203-509 | New Haven | Waterbury | Sprint Spectrum L.p. | Wireless |
| 203-510 | New Haven | Waterbury | Sprint Spectrum L.p. | Wireless |
| 203-512 | Fairfield | Danbury | Omnipoint Communications, Inc. - CT | Wireless |
| 203-513 | Fairfield | Huntington | At&t Local | Landline |
| 203-514 | New Haven | Meriden | Teleport Communications America, Llc - CT | Landline |
| 203-515 | Fairfield | Norwalk | Sprint Spectrum L.p. | Wireless |
| 203-516 | New Haven | Ansonia-Derby | Global Crossing Local Services, Inc.-Ct | Landline |
| 203-517 | Fairfield | Stamford | Level 3 Communications, Llc - CT | Landline |
| 203-518 | New Haven | Waterbury | New Cingular Wireless Pcs, Llc - DC | Wireless |
| 203-519 | New Haven | Waterbury | Sprint Spectrum L.p. | Wireless |
| 203-520 | Fairfield | Bridgeport | Cellco Partnership Dba Verizon Wireless - CT | Wireless |
| 203-521 | Fairfield | Bridgeport | Cellco Partnership Dba Verizon Wireless - CT | Wireless |
| 203-522 | Fairfield | Bridgeport | New Cingular Wireless Pcs, Llc - DC | Wireless |
| 203-523 | Fairfield | Norwalk | Teleport Communications America, Llc - CT | Landline |
| 203-524 | Fairfield | Stamford | New Cingular Wireless Pcs, Llc - DC | Wireless |
| 203-525 | New Haven | Waterbury | New Cingular Wireless Pcs, Llc - DC | Wireless |
| 203-526 | Fairfield | Bridgeport | Sprint Spectrum L.p. | Wireless |
| 203-527 | New Haven | Waterbury | Southern New England Telco Dba Frontier Comm Of CT | Landline |
| 203-528 | New Haven | Waterbury | Level 3 Communications, Llc - CT | Landline |
| 203-529 | Fairfield | Wilton | At&t Local | Landline |
| 203-530 | New Haven | New Haven | Cellco Partnership Dba Verizon Wireless - CT | Wireless |
| 203-531 | Fairfield | Greenwich | Verizon New York Inc. | Landline |
| 203-532 | Fairfield | Greenwich | Verizon New York Inc. | Landline |
| 203-533 | New Haven | Guilford | Level 3 Communications, Llc - CT | Landline |
| 203-534 | Fairfield | Bridgeport | Southern New England Telco Dba Frontier Comm Of CT | Wireless |
| 203-535 | New Haven | New Haven | Comcast Phone Of Connecticut, Inc. - CT | Landline |
| 203-536 | Fairfield | Stamford | Cellco Partnership Dba Verizon Wireless - CT | Wireless |
| 203-537 | New Haven | Meriden | Sprint Spectrum L.p. | Wireless |
| 203-538 | Fairfield | Huntington | Choice One Communications, Inc. - CT | Landline |
| 203-539 | Fairfield | Stamford | Southern New England Telco Dba Frontier Comm Of CT | Landline |
| 203-540 | Fairfield | Bridgeport | New Cingular Wireless Pcs, Llc - DC | Wireless |
| 203-541 | Fairfield | Stamford | Southern New England Telco Dba Frontier Comm Of CT | Landline |
| 203-542 | Fairfield | Greenwich | At&t Local | Landline |
| 203-543 | Fairfield | Bridgeport | Omnipoint Communications, Inc. - CT | Wireless |
| 203-544 | Fairfield | Redding | Southern New England Telco Dba Frontier Comm Of CT | Landline |
| 203-545 | Fairfield | Bridgeport | Sprint Spectrum L.p. | Wireless |
| 203-546 | Fairfield | Danbury | Teleport Communications America, Llc - CT | Landline |
| 203-547 | Fairfield | Stamford | Global Naps, Inc. - CT | Landline |
| 203-548 | Fairfield | Stamford | Broadwing Communications, Llc - CT | Landline |
| 203-549 | Fairfield | Bridgeport | Choice One Communications, Inc. - CT | Landline |
| 203-550 | Fairfield | Stamford | Omnipoint Communications, Inc. - CT | Wireless |
| 203-551 | Fairfield | Bridgeport | Teleport Communications America, Llc - CT | Landline |
| 203-552 | Fairfield | Greenwich | Verizon New York Inc. | Landline |
| 203-553 | New Haven | New Haven | Southern New England Telco Dba Frontier Comm Of CT | Landline |
| 203-554 | Fairfield | Stamford | New Cingular Wireless Pcs, Llc - DC | Wireless |
| 203-556 | Fairfield | Bridgeport | New Cingular Wireless Pcs, Llc - DC | Wireless |
| Phone Number 203-543-5229 |
USAGE Wireless |
City Bridgeport |
Operate Read more about who called from 2035435229 |
Update Time Mar-31-2025 |
| Phone Number 203-212-9222 |
USAGE Wireless |
City Bridgeport |
Operate Read more about who called from 2032129222 |
Update Time Mar-31-2025 |
| Phone Number 203-689-0259 |
USAGE Landline |
City New Haven |
Operate Read more about who called from 2036890259 |
Update Time Mar-31-2025 |
| Phone Number 203-368-2077 |
USAGE Landline |
City Bridgeport |
Operate Read more about who called from 2033682077 |
Update Time Mar-31-2025 |
| Phone Number 203-793-6162 |
USAGE Landline |
City Wallingford |
Operate Read more about who called from 2037936162 |
Update Time Mar-31-2025 |
| Phone Number 203-635-2496 |
USAGE Landline |
City Stamford |
Operate Read more about who called from 2036352496 |
Update Time Mar-31-2025 |
| Phone Number 203-300-7842 |
USAGE Wireless |
City Danbury |
Operate Read more about who called from 2033007842 |
Update Time Mar-31-2025 |
| Phone Number 203-606-6019 |
USAGE Wireless |
City New Haven |
Operate Read more about who called from 2036066019 |
Update Time Mar-31-2025 |
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