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 |
|---|---|---|---|
| 203-971 | Greenwich | CT | CABLEVISION LIGHTPATH, INC. - CT |
| 203-972 | New Canaan | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-973 | Stamford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-974 | New Haven | CT | TELEPORT COMMUNICATIONS AMERICA, LLC - CT |
| 203-975 | Stamford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-977 | Stamford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-978 | Stamford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-979 | Stamford | CT | NEW CINGULAR WIRELESS PCS, LLC - DC |
| 203-980 | New Haven | CT | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
| 203-981 | Norwalk | CT | METROPCS, INC. |
| 203-982 | Waterbury | CT | METROPCS, INC. |
| 203-983 | Greenwich | CT | PAETEC ITEL, LLC |
| 203-984 | Norwalk | CT | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
| 203-985 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-986 | Old Greenwich | CT | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT |
| 203-987 | Greenwich | CT | LEVEL 3 COMMUNICATIONS, LLC - CT |
| 203-988 | New Haven | CT | NEW CINGULAR WIRELESS PCS, LLC - DC |
| 203-989 | Stamford | CT | LEVEL 3 COMMUNICATIONS, LLC - CT |
| 203-990 | Old Greenwich | CT | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT |
| 203-991 | Norwalk | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-992 | Greenwich | CT | CSC VOICE, LLC |
| 203-993 | Bridgeport | CT | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
| 203-994 | Danbury | CT | OMNIPOINT COMMUNICATIONS, INC. - CT |
| 203-995 | Bridgeport | CT | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT |
| 203-996 | New Haven | CT | OMNIPOINT COMMUNICATIONS, INC. - CT |
| 203-997 | Ansonia-Derby | CT | OMNIPOINT COMMUNICATIONS, INC. - CT |
| 203-998 | Stamford | CT | LEVEL 3 COMMUNICATIONS, LLC - CT |
| 203-999 | New Haven | CT | OMNIPOINT COMMUNICATIONS, INC. - CT |
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