Telephone Area 203. Page 4.
Prefix: +1203
This prefix is distributed within the state Connecticut
The largest city in the region is New Haven
Time Zone: Eastern
Winter time: UTC-5
Summer time: UTC-4
Below on the map, there is indicated the largest city in the telephone area +1-203-...-.... Connecticut New Haven.
Phone numbers +1-203-YYY-YYYY
| Company | District | Major City | Prefix |
|---|---|---|---|
| Verizon New York | Fairfield | Greenwich, CT | +1-203532-SSSS |
| Level 3 Communications | New Haven | Guilford, CT | +1-203533-SSSS |
| Southern New England Telephone Co. | Fairfield | Bridgeport, CT | +1-203534-SSSS |
| Comcast Phone Of Connecticut | New Haven | New Haven, CT | +1-203535-SSSS |
| Cellco Partnership DBA Verizon Wireless | Fairfield | Stamford, CT | +1-203536-SSSS |
| Nextel Communications | New Haven | Meriden, CT | +1-203537-SSSS |
| Choice One Communications | Fairfield | Huntington, CT | +1-203538-SSSS |
| Southern New England Telephone Co. | Fairfield | Stamford, CT | +1-203539-SSSS |
| New Cingular Wireless PCS - DC | Fairfield | Bridgeport, CT | +1-203540-SSSS |
| Southern New England Telephone Co. | Fairfield | Stamford, CT | +1-203541-SSSS |
| AT&T Local | Fairfield | Greenwich, CT | +1-203542-SSSS |
| Omnipoint Communications | Fairfield | Bridgeport, CT | +1-203543-SSSS |
| Southern New England Telephone Co. | Fairfield | Redding, CT | +1-203544-SSSS |
| Sprint Spectrum L.p. | Fairfield | Bridgeport, CT | +1-203545-SSSS |
| Teleport Communications Group - New York | Fairfield | Danbury, CT | +1-203546-SSSS |
| Global Naps | Fairfield | Stamford, CT | +1-203547-SSSS |
| Broadwing Communications | Fairfield | Stamford, CT | +1-203548-SSSS |
| Choice One Communications | Fairfield | Bridgeport, CT | +1-203549-SSSS |
| Omnipoint Communications | Fairfield | Stamford, CT | +1-203550-SSSS |
| Teleport Communications Group - New York | Fairfield | Bridgeport, CT | +1-203551-SSSS |
| Verizon New York | Fairfield | Greenwich, CT | +1-203552-SSSS |
| Southern New England Telephone Co. | New Haven | New Haven, CT | +1-203553-SSSS |
| New Cingular Wireless PCS - DC | Fairfield | Stamford, CT | +1-203554-SSSS |
| New Cingular Wireless PCS - DC | Fairfield | Bridgeport, CT | +1-203556-SSSS |
| Cablevision Lightpath | Fairfield | Westport, CT | +1-203557-SSSS |
| New Cingular Wireless PCS - DC | New Haven | Waterbury, CT | +1-203558-SSSS |
| Teleport Communications Group - New York | Fairfield | Darien, CT | +1-203559-SSSS |
| New Cingular Wireless PCS - DC | New Haven | Waterbury, CT | +1-203560-SSSS |
| Cellco Partnership DBA Verizon Wireless | Fairfield | Stamford, CT | +1-203561-SSSS |
| Southern New England Telephone Co. | New Haven | New Haven, CT | +1-203562-SSSS |
| Southern New England Telephone Co. | Fairfield | Wilton, CT | +1-203563-SSSS |
| AT&T Local | Fairfield | Stamford, CT | +1-203564-SSSS |
| Sprint Spectrum L.p. | New Haven | Waterbury, CT | +1-203565-SSSS |
| Brooks Fiber Communications Of Connecticut Inc-ct | Fairfield | Stamford, CT | +1-203566-SSSS |
| Paetec Communications | Fairfield | Huntington, CT | +1-203567-SSSS |
| Paetec Communications | New Haven | Waterbury, CT | +1-203568-SSSS |
| Cablevision Lightpath | Fairfield | Stamford, CT | +1-203569-SSSS |
| Omnipoint Communications | Fairfield | Stamford, CT | +1-203570-SSSS |
| AT&T Local | Fairfield | Westport, CT | +1-203571-SSSS |
| Sprint Spectrum L.p. | Fairfield | Bridgeport, CT | +1-203572-SSSS |
| Southern New England Telephone Co. | New Haven | Waterbury, CT | +1-203573-SSSS |
| Southern New England Telephone Co. | New Haven | Waterbury, CT | +1-203574-SSSS |
| Southern New England Telephone Co. | New Haven | Waterbury, CT | +1-203575-SSSS |
| Southern New England Telephone Co. | Fairfield | Bridgeport, CT | +1-203576-SSSS |
| Southern New England Telephone Co. | New Haven | Waterbury, CT | +1-203577-SSSS |
| Southern New England Telephone Co. | New Haven | Waterbury, CT | +1-203578-SSSS |
| Southern New England Telephone Co. | Fairfield | Bridgeport, CT | +1-203579-SSSS |
| Usa Mobility Wireless | New Haven | Waterbury, CT | +1-203580-SSSS |
| Southern New England Telephone Co. | Fairfield | Bridgeport, CT | +1-203581-SSSS |
| Southern New England Telephone Co. | New Haven | New Haven, CT | +1-203582-SSSS |
| Level 3 Communications | Fairfield | Bridgeport, CT | +1-203583-SSSS |
| Cellco Partnership DBA Verizon Wireless | New Haven | New Haven, CT | +1-203584-SSSS |
| Southern New England Telephone Co. | Fairfield | Stamford, CT | +1-203585-SSSS |
| Teleport Communications Group - New York | Litchfield | Woodbury, CT | +1-203586-SSSS |
| Cablevision Lightpath | Fairfield | Redding, CT | +1-203587-SSSS |
| Cablevision Lightpath | Fairfield | Stamford, CT | +1-203588-SSSS |
| Sprint Spectrum L.p. | New Haven | New Haven, CT | +1-203589-SSSS |
| Level 3 Communications | Trumbull, CT | +1-203590-SSSS | |
| Southern New England Telephone Co. | New Haven | Waterbury, CT | +1-203591-SSSS |
| New Cingular Wireless PCS - DC | New Haven | Waterbury, CT | +1-203592-SSSS |
| Usa Mobility Wireless | Fairfield | Norwalk, CT | +1-203593-SSSS |
| Cablevision Lightpath | Fairfield | New Canaan, CT | +1-203594-SSSS |
| Southern New England Telephone Co. | Fairfield | Stamford, CT | +1-203595-SSSS |
| Southern New England Telephone Co. | New Haven | Waterbury, CT | +1-203596-SSSS |
| Southern New England Telephone Co. | New Haven | Waterbury, CT | +1-203597-SSSS |
| Southern New England Telephone Co. | New Haven | Waterbury, CT | +1-203598-SSSS |
| AT&T Local | New Haven | Meriden, CT | +1-203599-SSSS |
| Metro PCS | Meriden, CT | +1-203600-SSSS | |
| Teleport Communications Group - New York | Fairfield | Trumbull, CT | +1-203601-SSSS |
| Southern New England Telephone Co. | Fairfield | Stamford, CT | +1-203602-SSSS |
| Southern New England Telephone Co. | New Haven | New Haven, CT | +1-203603-SSSS |
| Broadwing Communications | Fairfield | Stamford, CT | +1-203604-SSSS |
| Cellco Partnership DBA Verizon Wireless | New Haven | New Haven, CT | +1-203605-SSSS |
| Omnipoint Communications | New Haven | New Haven, CT | +1-203606-SSSS |
| Brooks Fiber Communications Of Connecticut Inc-ct | Fairfield | Stamford, CT | +1-203607-SSSS |
| Paetec Communications | New Haven | Meriden, CT | +1-203608-SSSS |
| Southern New England Telephone Co. | Fairfield | Stamford, CT | +1-203609-SSSS |
| Conversent Communications Of Connecticut | Fairfield | Bridgeport, CT | +1-203610-SSSS |
| Global Crossing Local Services-ct | Fairfield | Bridgeport, CT | +1-203612-SSSS |
| Sprint Spectrum L.p. | Fairfield | Norwalk, CT | +1-203613-SSSS |
