203 Area Code in Connecticut, United States
Description
Area code 203 is one of the original codes established in 1947 and serves southwestern Connecticut, including cities such as Bridgeport, New Haven, Stamford, and Norwalk. It was the only area code in Connecticut until 1995, when 860 was created to serve the rest of the state. In 2009, 203 was overlaid with area code 475, making ten-digit dialing mandatory across the region. The 203 area is known for its proximity to New York City and its affluent suburban communities, as well as major educational institutions like Yale University. The area is a mix of industrial history, academic prestige, and financial prosperity. Despite the overlay, 203 remains a highly recognizable and preferred area code for businesses and residents in the region.
Time & Time Zone
Time zone:
Eastern (GMT -05:00) Current time:
Map
Major Cities
| City | Prefixes |
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Counties
| County | Prefixes |
|---|---|
| Fairfield | |
| New Haven | |
| Hartford | |
| Litchfield | |
| Middlesex | |
| Westchester | |
| New York | |
| Richmond | |
| Putnam | |
| New London | |
| Nassau |
Telephone Carriers
| Carrier | Type | Prefixes (%) |
|---|---|---|
| Southern New England Telephone Co | Landline | 61% |
| Cellco Partnership Dba Verizon Wireless Ct | Wireless | 5% |
| New Cingular Wireless Pcs Llc Dc | Wireless | 5% |
| Sprint Spectrum L P | Wireless | 4% |
| Verizon New York Inc | Landline | 3% |
| Brooks Fiber Communications Of Connecticut Inc Ct | Landline | 3% |
| Cablevision Lightpath Inc Ct | Landline | 3% |
| Teleport Communications Group New York Ct | Landline | 2% |
| Level 3 Communications Llc Ct | Landline | 2% |
| Omnipoint Communications Inc Ct | Wireless | 2% |
| Global Crossing Local Services Inc Ct | Landline | 2% |
| Choice One Communications Inc Ct | Landline | 1% |
| At T Local | Landline | 1% |
| Paetec Communications Inc Ct | Landline | 1% |
| Usa Mobility Wireless Inc | Wireless | 1% |
| Global Naps Inc Ri | Landline | < 1% |
| Teleport Communications Group Ny | Landline | < 1% |
| Metro Pcs Inc | Wireless | < 1% |
| American Messaging Am Inc | Wireless | < 1% |
| Sbc Internet Services Inc | Landline | < 1% |
| Mcimetro Access Transmission Services Llc | Landline | < 1% |
| Cox Connecticut Telecom Llc | Landline | < 1% |
| Comcast Phone Of Connecticut Inc Ct | Landline | < 1% |
| Conversent Communications Of Connecticut Llc | Landline | < 1% |
| Bandwidth Com Clec Llc Ct | Landline | < 1% |
| Paetec Communications Inc Ny | Landline | < 1% |
| Broadwing Communications Llc Ct | Landline | < 1% |
| Ctc Communications Corp Ct | Landline | < 1% |
| Peerless Network Of Connecticut Llc Ct | Wireless | < 1% |
| Global Naps Inc Ct | Landline | < 1% |
Prefixes
| Prefix | City | Carrier | Type |
|---|---|---|---|
| Greenwich | Southern New England Telephone Co. | Landline | |
| Stamford | Cablevision Lightpath, Inc. - Ct | Landline | |
| Shelton | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Old Greenwich | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Weston | Southern New England Telephone Co. | Landline | |
| Danbury | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Sandy Hook | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Seymour | Southern New England Telephone Co. | Landline | |
| Norwalk | Conversent Communications of Connecticut, Llc | Landline | |
| Stamford | Usa Mobility Wireless, Inc. | Wireless | |
| Bridgeport | Choice One Communications, Inc. - Ct | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Waterbury | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| New Haven | At&t Local | Landline | |
| East Haven | Southern New England Telephone Co. | Landline | |
| Darien | Southern New England Telephone Co. | Landline | |
| Milford | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Naugatuck | Teleport Communications Group - New York - Ct | Landline | |
| Stamford | Sprint Spectrum L.p. | Wireless | |
| Bethel | Southern New England Telephone Co. | Landline | |
| Danbury | Southern New England Telephone Co. | Landline | |
| Ridgefield | Southern New England Telephone Co. | Landline | |
| Trumbull | Level 3 Communications, Llc - Ct | Landline | |
| Westport | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Ridgefield | Southern New England Telephone Co. | Landline | |
| Redding | Southern New England Telephone Co. | Landline | |
| Shelton | Choice One Communications, Inc. - Ct | Landline | |
| Wallingford | Choice One Communications, Inc. - Ct | Landline | |
| Norwalk | Sprint Spectrum L.p. | Wireless | |
| Westport | Southern New England Telephone Co. | Landline | |
| Danbury | Southern New England Telephone Co. | Landline | |
| Greenwich | Verizon New York, Inc. | Landline | |
| Darien | Southern New England Telephone Co. | Landline | |
| Easton | Southern New England Telephone Co. | Landline | |
| Weston | Southern New England Telephone Co. | Landline | |
| Madison | Southern New England Telephone Co. | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| New Haven | Usa Mobility Wireless, Inc. | Wireless | |
| Stamford | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Bridgeport | Cablevision Lightpath, Inc. - Ct | Wireless | |
| Stratford | Global Crossing Local Services, Inc.-ct | Landline | |
| Norwalk | Cablevision Lightpath, Inc. - Ct | Landline | |
| Darien | At&t Local | Landline | |
| Branford | Comcast Phone of Connecticut, Inc. - Ct | Landline | |
| Westport | Southern New England Telephone Co. | Landline | |
| Shelton | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Stamford | Level 3 Communications, Llc - Ct | Landline | |
| Waterbury | Level 3 Communications, Llc - Ct | Landline | |
| New Haven | Usa Mobility Wireless, Inc. | Wireless | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Milford | Global Crossing Local Services, Inc.-ct | Landline | |
| Greenwich | Verizon New York, Inc. | Landline | |
| Branford | Comcast Phone of Connecticut, Inc. - Ct | Landline | |
| New Haven | Global Crossing Local Services, Inc.-ct | Landline | |
| Hamden | Southern New England Telephone Co. | Landline | |
| Easton | Southern New England Telephone Co. | Landline | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Westport | Cablevision Lightpath, Inc. - Ct | Landline | |
| New Haven | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Fairfield | Southern New England Telephone Co. | Landline | |
| New Fairfield | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| North Haven | Southern New England Telephone Co. | Landline | |
| West Hartford | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Hamden | Southern New England Telephone Co. | Landline | |
| New Haven | Sprint Spectrum L.p. | Wireless | |
| Greenwich | Verizon New York, Inc. | Landline | |
| Stamford | Global Naps, Inc. - Ct | Landline | |
| Naugatuck | Global Crossing Local Services, Inc.-ct | Landline | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Darien | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Westport | Southern New England Telephone Co. | Landline | |
| Darien | Southern New England Telephone Co. | Landline | |
| Old Greenwich | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Madison | Southern New England Telephone Co. | Landline | |
| New Haven | Teleport Communications Group - New York - Ct | Landline | |
| Greenwich | Cellco Partnership Dba Verizon Wireless - Ct | Landline | |
| Danbury | Southern New England Telephone Co. | Landline | |
| Trumbull | Southern New England Telephone Co. | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Bridgeport | Sprint Spectrum L.p. | Wireless | |
| Greenwich | Cablevision Lightpath, Inc. - Ct | Landline | |
| Cheshire | Southern New England Telephone Co. | Landline | |
| Guilford | Southern New England Telephone Co. | Landline | |
| Danbury | Southern New England Telephone Co. | Landline | |
| Greenwich | Southern New England Telephone Co. | Landline | |
| Naugatuck | Southern New England Telephone Co. | Landline | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| Fairfield | Global Crossing Local Services, Inc.-ct | Landline | |
| Danbury | Southern New England Telephone Co. | Landline | |
| Middlebury | Southern New England Telephone Co. | Landline | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Milford | Southern New England Telephone Co. | Landline | |
| Norwalk | Sprint Spectrum L.p. | Wireless | |
| Madison | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Norwalk | Sprint Spectrum L.p. | Wireless | |
| Norwalk | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Wallingford | Teleport Communications Group - New York - Ct | Landline | |
| Greenwich | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Westport | Southern New England Telephone Co. | Landline | |
| Ridgefield | Southern New England Telephone Co. | Landline | |
| Darien | Southern New England Telephone Co. | Landline | |
| Danbury | Southern New England Telephone Co. | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| Seymour | Southern New England Telephone Co. | Landline | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Redding | At&t Local | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| Easton | Southern New England Telephone Co. | Landline | |
| Danbury | Omnipoint Communications, Inc. - Ct | Wireless | |
| Waterbury | Southern New England Telephone Co. | Landline | |
| New Haven | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| New Haven | At&t Local | Landline | |
| West Haven | Southern New England Telephone Co. | Landline | |
| New Fairfield | Global Crossing Local Services, Inc.-ct | Landline | |
| Orange | Southern New England Telephone Co. | Landline | |
| Waterbury | Choice One Communications, Inc. - Ct | Landline | |
| Bridgeport | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Norwalk | Cablevision Lightpath, Inc. - Ct | Wireless | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| South Windsor | Southern New England Telephone Co. | Landline | |
| Easton | Cablevision Lightpath, Inc. - Ct | Landline | |
| New Haven | Omnipoint Communications, Inc. - Ct | Wireless | |
| Shelton | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Westport | Southern New England Telephone Co. | Landline | |
| Wolcott | Level 3 Communications, Llc - Ct | Landline | |
| Danbury | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Bridgeport | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Monroe | Southern New England Telephone Co. | Landline | |
| Hamden | Southern New England Telephone Co. | Landline | |
| Redding | Cablevision Lightpath, Inc. - Ct | Landline | |
| Darien | Teleport Communications Group - New York - Ct | Landline | |
| Stamford | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| Southbury | Teleport Communications Group - New York - Ct | Landline | |
| Waterbury | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Norwalk | Cablevision Lightpath, Inc. - Ct | Landline | |
| Madison | Choice One Communications, Inc. - Ct | Landline | |
| Trumbull | Southern New England Telephone Co. | Landline | |
| Wolcott | Southern New England Telephone Co. | Landline | |
| Stratford | Southern New England Telephone Co. | Landline | |
| Westport | New Cingular Wireless Pcs, Llc - Dc | Landline | |
| Wilton | Teleport Communications Group - New York - Ct | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Trumbull | Southern New England Telephone Co. | Landline | |
| Georgetown | Southern New England Telephone Co. | Landline | |
| Greenwich | Verizon New York, Inc. | Landline | |
| Hamden | Southern New England Telephone Co. | Landline | |
| West Harrison | Verizon New York, Inc. | Landline | |
| North Haven | Southern New England Telephone Co. | Landline | |
| Norwalk | Sprint Spectrum L.p. | Wireless | |
| Hartford | Teleport Communications Group - New York - Ct | Landline | |
| Waterbury | New Cingular Wireless Pcs, Llc - Dc | Landline | |
| Bridgeport | Omnipoint Communications, Inc. - Ct | Wireless | |
| West Haven | Southern New England Telephone Co. | Landline | |
| Stamford | Cablevision Lightpath, Inc. - Ct | Landline | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| Danbury | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Bridgeport | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Westport | Southern New England Telephone Co. | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| Darien | Southern New England Telephone Co. | Landline | |
| Wallingford | Southern New England Telephone Co. | Landline | |
| Meriden | Southern New England Telephone Co. | Landline | |
| Redding | Sprint Spectrum L.p. | Wireless | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| North Branford | Southern New England Telephone Co. | Landline | |
| Wolcott | Southern New England Telephone Co. | Landline | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Darien | Southern New England Telephone Co. | Landline | |
| Stratford | Southern New England Telephone Co. | Landline | |
| Darien | Paetec Communications, Inc. - Ct | Landline | |
| Stamford | Sprint Spectrum L.p. | Wireless | |
| New Haven | Sprint Spectrum L.p. | Wireless | |
| Bridgeport | Cablevision Lightpath, Inc. - Ct | Wireless | |
| Hamden | Cablevision Lightpath, Inc. - Ct | Landline | |
| Stratford | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Greenwich | Cablevision Lightpath, Inc. - Ct | Landline | |
| Westport | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Stamford | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| West Haven | Southern New England Telephone Co. | Landline | |
| Bridgeport | Southern New England Telephone Co. | Wireless | |
| Wallingford | Global Crossing Local Services, Inc.-ct | Landline | |
| Stamford | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Greenwich | Southern New England Telephone Co. | Landline | |
| Bridgeport | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Ansonia | Southern New England Telephone Co. | Landline | |
| Shelton | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Newtown | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| New Canaan | Level 3 Communications, Llc - Ct | Landline | |
| New Fairfield | Southern New England Telephone Co. | Landline | |
| Woodbury | Sprint Spectrum L.p. | Wireless | |
| Stamford | Level 3 Communications, Llc - Ct | Wireless | |
| Oxford | Bandwidth.com Clec, Llc - Ct | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Waterbury | Southern New England Telephone Co. | Landline | |
| Danbury | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Wallingford | Southern New England Telephone Co. | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| New Haven | Teleport Communications Group - New York - Ct | Landline | |
| Ridgefield | Southern New England Telephone Co. | Landline | |
| Waterbury | Sprint Spectrum L.p. | Wireless | |
| Waterbury | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Waterbury | Southern New England Telephone Co. | Landline | |
| Bridgeport | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| West Haven | Southern New England Telephone Co. | Landline | |
| Ridgefield | Southern New England Telephone Co. | Landline | |
| Darien | Southern New England Telephone Co. | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| Waterbury | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| Danbury | Sprint Spectrum L.p. | Wireless | |
| Norwalk | Sprint Spectrum L.p. | Wireless | |
| Norwalk | At&t Local | Landline | |
| Hartford | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Fairfield | Southern New England Telephone Co. | Landline | |
| Old Greenwich | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Shelton | Global Crossing Local Services, Inc.-ct | Landline | |
| Woodbury | Paetec Communications, Inc. - Ct | Landline | |
| Prospect | Southern New England Telephone Co. | Landline | |
| Greenwich | Cablevision Lightpath, Inc. - Ct | Landline | |
| Meriden | Southern New England Telephone Co. | Landline | |
| Darien | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| New Fairfield | Paetec Communications, Inc. - Ct | Landline | |
| Newtown | Southern New England Telephone Co. | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Stamford | Ctc Communications Corp. - Ct | Landline | |
| Meriden | Teleport Communications Group - New York - Ct | Landline | |
| North Haven | Southern New England Telephone Co. | Landline | |
| Brewster | Omnipoint Communications, Inc. - Ct | Wireless | |
| Cos Cob | Verizon New York, Inc. | Landline | |
| North Salem | Global Crossing Local Services, Inc.-ct | Landline | |
| New Haven | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Waterbury | Sprint Spectrum L.p. | Wireless | |
| Stratford | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Brookfield | Southern New England Telephone Co. | Landline | |
| Norwalk | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Ridgefield | Southern New England Telephone Co. | Landline | |
| Wolcott | Broadwing Communications, Llc - Ct | Landline | |
| Darien | Southern New England Telephone Co. | Landline | |
| Danbury | Teleport Communications Group - New York - Ct | Landline | |
| Shelton | Southern New England Telephone Co. | Landline | |
| New Haven | Sprint Spectrum L.p. | Wireless | |
| Norwalk | Omnipoint Communications, Inc. - Ct | Wireless | |
| Darien | Southern New England Telephone Co. | Landline | |
| Ridgefield | Southern New England Telephone Co. | Landline | |
| Stamford | Global Crossing Local Services, Inc.-ct | Landline | |
| Wallingford | Southern New England Telephone Co. | Landline | |
| Naugatuck | Southern New England Telephone Co. | Landline | |
| Danbury | Omnipoint Communications, Inc. - Ct | Wireless | |
| Branford | Global Crossing Local Services, Inc.-ct | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| New Haven | Comcast Phone of Connecticut, Inc. - Ct | Landline | |
| Waterbury | Omnipoint Communications, Inc. - Ct | Wireless | |
| Shelton | Global Crossing Local Services, Inc.-ct | Landline | |
| Southbury | Southern New England Telephone Co. | Landline | |
| Bridgeport | Sprint Spectrum L.p. | Wireless | |
| West Haven | Southern New England Telephone Co. | Landline | |
| Newtown | Southern New England Telephone Co. | Landline | |
| West Haven | Southern New England Telephone Co. | Landline | |
| Cos Cob | Verizon New York, Inc. | Landline | |
| Bridgeport | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Cos Cob | Verizon New York, Inc. | Landline | |
| Hamden | Southern New England Telephone Co. | Landline | |
| Norwalk | Level 3 Communications, Llc - Ct | Landline | |
| Bridgeport | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Wallingford | Southern New England Telephone Co. | Landline | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Waterbury | Sprint Spectrum L.p. | Wireless | |
| Greenwich | Cablevision Lightpath, Inc. - Ct | Landline | |
| New Haven | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Westport | Southern New England Telephone Co. | Landline | |
| New Haven | Sprint Spectrum L.p. | Wireless | |
| Cheshire | Teleport Communications Group - New York - Ct | Landline | |
| Cos Cob | Sprint Spectrum L.p. | Landline | |
| Northford | Southern New England Telephone Co. | Landline | |
| Meriden | Southern New England Telephone Co. | Landline | |
| Danbury | Southern New England Telephone Co. | Landline | |
| Norwalk | Level 3 Communications, Llc - Ct | Landline | |
| Norwalk | Cablevision Lightpath, Inc. - Ct | Landline | |
| New Haven | Southern New England Telephone Co. | Landline | |
| North Branford | Southern New England Telephone Co. | Landline | |
| New Haven | At&t Local | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| Greenwich | At&t Local | Landline | |
| Redding | Southern New England Telephone Co. | Landline | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| Middlebury | Southern New England Telephone Co. | Landline | |
| Brookfield | Southern New England Telephone Co. | Landline | |
| Fairfield | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| North Branford | Southern New England Telephone Co. | Landline | |
| East Haven | Southern New England Telephone Co. | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| West Haven | Southern New England Telephone Co. | Landline | |
| Cos Cob | Verizon New York, Inc. | Landline | |
| Bethel | Southern New England Telephone Co. | Landline | |
| New Haven | Broadwing Communications, Llc - Ct | Landline | |
| Norwalk | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Old Greenwich | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Middletown | Paetec Communications, Inc. - Ct | Landline | |
| Stamford | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| West Haven | Southern New England Telephone Co. | Landline | |
| Shelton | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Meriden | Omnipoint Communications, Inc. - Ct | Wireless | |
| Hamden | Southern New England Telephone Co. | Landline | |
| New Haven | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| New Fairfield | Usa Mobility Wireless, Inc. | Wireless | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Middlebury | Southern New England Telephone Co. | Landline | |
| Greenwich | Verizon New York, Inc. | Landline | |
| Westport | Southern New England Telephone Co. | Landline | |
| Shelton | Paetec Communications, Inc. - Ct | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Hamden | Southern New England Telephone Co. | Landline | |
| Meriden | At&t Local | Landline | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| New Fairfield | At&t Local | Landline | |
| Norwalk | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| New Haven | Teleport Communications Group - New York - Ct | Landline | |
| North Haven | Southern New England Telephone Co. | Landline | |
| Westport | At&t Local | Landline | |
| Darien | Southern New England Telephone Co. | Landline | |
| Darien | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Danbury | Southern New England Telephone Co. | Landline | |
| Bridgeport | Omnipoint Communications, Inc. - Ct | Wireless | |
| Meriden | Southern New England Telephone Co. | Landline | |
| Hamden | Southern New England Telephone Co. | Landline | |
| Ridgefield | Cablevision Lightpath, Inc. - Ct | Landline | |
| North Branford | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Danbury | Southern New England Telephone Co. | Landline | |
| Fairfield | Southern New England Telephone Co. | Landline | |
| Waterbury | Southern New England Telephone Co. | Landline | |
| Naugatuck | Southern New England Telephone Co. | Landline | |
| Bridgeport | Teleport Communications Group - New York - Ct | Landline | |
| Greenwich | Southern New England Telephone Co. | Landline | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Bridgeport | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Ridgefield | Southern New England Telephone Co. | Landline | |
| Wallingford | Paetec Communications, Inc. - Ct | Landline | |
| Stamford | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Waterbury | Southern New England Telephone Co. | Landline | |
| Waterbury | American Messaging (am), Inc. | Wireless | |
| Hamden | Southern New England Telephone Co. | Landline | |
| Danbury | Southern New England Telephone Co. | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| Westport | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| New Haven | Metro Pcs, Inc. | Wireless | |
| East Haven | Southern New England Telephone Co. | Landline | |
| Danbury | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Derby | Southern New England Telephone Co. | Landline | |
| Greenwich | Paetec Communications, Inc. - Ny | Landline | |
| Wilton | At&t Local | Landline | |
| Waterbury | Southern New England Telephone Co. | Landline | |
| Greenwich | Verizon New York, Inc. | Landline | |
| New Fairfield | Level 3 Communications, Llc - Ct | Landline | |
| Riverside | Teleport Communications Group - Ny | Landline | |
| Oxford | Southern New England Telephone Co. | Landline | |
| Greenwich | Cablevision Lightpath, Inc. - Ct | Landline | |
| Monroe | Cellco Partnership Dba Verizon Wireless - Ct | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Hamden | Southern New England Telephone Co. | Landline | |
| Norwalk | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Danbury | Southern New England Telephone Co. | Landline | |
| Hamden | Southern New England Telephone Co. | Landline | |
| Bridgeport | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Danbury | Southern New England Telephone Co. | Landline | |
| Trumbull | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Greenwich | Cablevision Lightpath, Inc. - Ct | Landline | |
| Hamden | Southern New England Telephone Co. | Landline | |
| Easton | Southern New England Telephone Co. | Landline | |
| New Haven | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| New Haven | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Derby | Southern New England Telephone Co. | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Shelton | Choice One Communications, Inc. - Ct | Landline | |
| New Haven | Paetec Communications, Inc. - Ct | Landline | |
| Stamford | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Bridgeport | Usa Mobility Wireless, Inc. | Wireless | |
| Bridgeport | Omnipoint Communications, Inc. - Ct | Wireless | |
| Woodbury | Southern New England Telephone Co. | Landline | |
| Meriden | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Bridgeport | Omnipoint Communications, Inc. - Ct | Wireless | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| Wallingford | Southern New England Telephone Co. | Landline | |
| Derby | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Danbury | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Norwalk | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Hamden | Southern New England Telephone Co. | Landline | |
| Stamford | Omnipoint Communications, Inc. - Ct | Wireless | |
| New Milford | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| West Haven | Southern New England Telephone Co. | Landline | |
| Waterbury | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Waterbury | Southern New England Telephone Co. | Landline | |
| Greenwich | Cox Connecticut Telecom, Llc | Landline | |
| New Haven | At&t Local | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Greenwich | Teleport Communications Group - Ny | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Norwalk | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Killingworth | Sprint Spectrum L.p. | Wireless | |
| New Haven | Sprint Spectrum L.p. | Wireless | |
| Redding | Southern New England Telephone Co. | Landline | |
| Meriden | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| New Canaan | Southern New England Telephone Co. | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| Milldale | Sprint Spectrum L.p. | Wireless | |
| Stratford | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Stamford | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Stratford | Sprint Spectrum L.p. | Wireless | |
| Stamford | Sprint Spectrum L.p. | Wireless | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| Meriden | Mcimetro Access Transmission Services Llc | Landline | |
| New Haven | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Stamford | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| New Canaan | Southern New England Telephone Co. | Landline | |
| Bethel | Southern New England Telephone Co. | Landline | |
| Meriden | Southern New England Telephone Co. | Landline | |
| Trumbull | Southern New England Telephone Co. | Landline | |
| Milford | Southern New England Telephone Co. | Landline | |
| Norwalk | Cablevision Lightpath, Inc. - Ct | Landline | |
| Sandy Hook | Southern New England Telephone Co. | Landline | |
| New Haven | American Messaging (am), Inc. | Wireless | |
| Hamden | Southern New England Telephone Co. | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Shelton | Southern New England Telephone Co. | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| Monroe | Southern New England Telephone Co. | Landline | |
| Darien | Southern New England Telephone Co. | Landline | |
| Bridgeport | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Cheshire | Omnipoint Communications, Inc. - Ct | Wireless | |
| Bridgeport | Usa Mobility Wireless, Inc. | Wireless | |
| Fairfield | Cablevision Lightpath, Inc. - Ct | Landline | |
| New Haven | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Trumbull | Teleport Communications Group - New York - Ct | Landline | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| Darien | Cablevision Lightpath, Inc. - Ct | Landline | |
| New Haven | Southern New England Telephone Co. | Landline | |
| West Haven | Southern New England Telephone Co. | Landline | |
| New Fairfield | Sprint Spectrum L.p. | Landline | |
| Shelton | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Westport | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Hamden | Southern New England Telephone Co. | Landline | |
| Stamford | Broadwing Communications, Llc - Ct | Landline | |
| Cos Cob | Verizon New York, Inc. | Landline | |
| New Canaan | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| New Haven | American Messaging (am), Inc. | Wireless | |
| New Fairfield | New Cingular Wireless Pcs, Llc - Dc | Landline | |
| Brookfield | Southern New England Telephone Co. | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Meriden | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| New Haven | Bandwidth.com Clec, Llc - Ct | Wireless | |
| Bridgeport | Sprint Spectrum L.p. | Wireless | |
| Oxford | Southern New England Telephone Co. | Landline | |
| New Haven | At&t Local | Landline | |
| Westport | Southern New England Telephone Co. | Landline | |
| Old Greenwich | Teleport Communications Group - New York - Ct | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| New Haven | Comcast Phone of Connecticut, Inc. - Ct | Landline | |
| Newtown | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Wilton | Level 3 Communications, Llc - Ct | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Danbury | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| New Fairfield | Teleport Communications Group - New York - Ct | Landline | |
| Danbury | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Norwalk | Omnipoint Communications, Inc. - Ct | Wireless | |
| Milford | Cablevision Lightpath, Inc. - Ct | Landline | |
| New Haven | Omnipoint Communications, Inc. - Ct | Wireless | |
| Hamden | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| New Haven | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| West Haven | Southern New England Telephone Co. | Landline | |
| Old Greenwich | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Meriden | Southern New England Telephone Co. | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Wilton | Southern New England Telephone Co. | Landline | |
| Southbury | Southern New England Telephone Co. | Landline | |
| Norwalk | Usa Mobility Wireless, Inc. | Wireless | |
| Greenwich | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Bridgeport | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Greenwich | Verizon New York, Inc. | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Stamford | Paetec Communications, Inc. - Ct | Landline | |
| Trumbull | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Waterbury | Omnipoint Communications, Inc. - Ct | Wireless | |
| New Haven | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Easton | Southern New England Telephone Co. | Landline | |
| Hamden | Southern New England Telephone Co. | Landline | |
| New Haven | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| New Haven | Sprint Spectrum L.p. | Wireless | |
| New Haven | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| New Haven | Omnipoint Communications, Inc. - Ct | Wireless | |
| New Fairfield | Sprint Spectrum L.p. | Wireless | |
| New Haven | Conversent Communications of Connecticut, Llc | Landline | |
| Darien | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Shelton | Southern New England Telephone Co. | Landline | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Stamford | Level 3 Communications, Llc - Ct | Landline | |
| Waterbury | Southern New England Telephone Co. | Landline | |
| Waterbury | Southern New England Telephone Co. | Wireless | |
| New Haven | Sprint Spectrum L.p. | Wireless | |
| Stamford | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Middletown | Sprint Spectrum L.p. | Wireless | |
| Avon | At&t Local | Landline | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Waterbury | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Stamford | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Waterbury | Southern New England Telephone Co. | Landline | |
| Shelton | Southern New England Telephone Co. | Landline | |
| Ansonia | Omnipoint Communications, Inc. - Ct | Wireless | |
| Stamford | Level 3 Communications, Llc - Ct | Landline | |
| Bridgeport | Sprint Spectrum L.p. | Wireless | |
| Wilton | Cablevision Lightpath, Inc. - Ct | Landline | |
| Wallingford | Southern New England Telephone Co. | Landline | |
| Easton | Southern New England Telephone Co. | Landline | |
| North Haven | Southern New England Telephone Co. | Landline | |
| Cheshire | Southern New England Telephone Co. | Landline | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Meriden | Southern New England Telephone Co. | Landline | |
| Hamden | Sprint Spectrum L.p. | Wireless | |
| Stamford | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Glastonbury | Teleport Communications Group - New York - Ct | Landline | |
| New Haven | Metro Pcs, Inc. | Wireless | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| New Haven | Cablevision Lightpath, Inc. - Ct | Landline | |
| Bridgeport | Global Crossing Local Services, Inc.-ct | Landline | |
| Ridgefield | Teleport Communications Group - New York - Ct | Landline | |
| Stamford | Usa Mobility Wireless, Inc. | Wireless | |
| Stamford | Paetec Communications, Inc. - Ct | Landline | |
| Bridgeport | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| New Haven | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Norwalk | Peerless Network of Connecticut, Llc - Ct | Wireless | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Darien | Southern New England Telephone Co. | Landline | |
| Greenwich | Omnipoint Communications, Inc. - Ct | Wireless | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Norwalk | Cablevision Lightpath, Inc. - Ct | Landline | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| Hamden | Southern New England Telephone Co. | Landline | |
| Meriden | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Cos Cob | Verizon New York, Inc. | Landline | |
| Stamford | At&t Local | Landline | |
| Stamford | Cablevision Lightpath, Inc. - Ct | Landline | |
| Waterbury | Sprint Spectrum L.p. | Wireless | |
| Oakdale | Choice One Communications, Inc. - Ct | Landline | |
| New Haven | Sprint Spectrum L.p. | Wireless | |
| Norwalk | Paetec Communications, Inc. - Ct | Landline | |
| New Haven | Bandwidth.com Clec, Llc - Ct | Landline | |
| Westport | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Waterbury | Sprint Spectrum L.p. | Wireless | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| Derby | Southern New England Telephone Co. | Landline | |
| Branford | Choice One Communications, Inc. - Ct | Landline | |
| Middlebury | Southern New England Telephone Co. | Landline | |
| Hamden | Southern New England Telephone Co. | Landline | |
| Waterbury | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Norwalk | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Guilford | Teleport Communications Group - New York - Ct | Landline | |
| New Haven | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Bridgeport | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Granby | Paetec Communications, Inc. - Ct | Landline | |
| Wolcott | Teleport Communications Group - New York - Ct | Landline | |
| Shelton | Southern New England Telephone Co. | Landline | |
| West Haven | Southern New England Telephone Co. | Landline | |
| Monroe | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Norwalk | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Middlebury | Southern New England Telephone Co. | Landline | |
| Milford | Choice One Communications, Inc. - Ct | Landline | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| Madison | Global Crossing Local Services, Inc.-ct | Landline | |
| Greenwich | Verizon New York, Inc. | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| Naugatuck | Choice One Communications, Inc. - Ct | Landline | |
| New Haven | Sprint Spectrum L.p. | Wireless | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| West Haven | Southern New England Telephone Co. | Landline | |
| Bridgeport | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| New Haven | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Trumbull | Global Crossing Local Services, Inc.-ct | Landline | |
| New Haven | Ctc Communications Corp. - Ct | Landline | |
| Waterbury | Southern New England Telephone Co. | Landline | |
| Trumbull | Southern New England Telephone Co. | Landline | |
| Hamden | Southern New England Telephone Co. | Landline | |
| Trumbull | Southern New England Telephone Co. | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| New Haven | Cellco Partnership Dba Verizon Wireless - Ct | Landline | |
| New Haven | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Meriden | Cox Connecticut Telecom, Llc | Landline | |
| Bethlehem | Southern New England Telephone Co. | Landline | |
| New Fairfield | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| North Haven | Teleport Communications Group - New York - Ct | Landline | |
| Wallingford | Southern New England Telephone Co. | Landline | |
| Monroe | Southern New England Telephone Co. | Landline | |
| New Haven | At&t Local | Landline | |
| West Haven | Southern New England Telephone Co. | Landline | |
| New Haven | Level 3 Communications, Llc - Ct | Landline | |
| Trumbull | Southern New England Telephone Co. | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| Meriden | Metro Pcs, Inc. | Wireless | |
| Meriden | Southern New England Telephone Co. | Landline | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| Wallingford | Southern New England Telephone Co. | Landline | |
| Southbury | Southern New England Telephone Co. | Landline | |
| Stamford | Cablevision Lightpath, Inc. - Ct | Wireless | |
| New Canaan | Southern New England Telephone Co. | Landline | |
| Shelton | Teleport Communications Group - New York - Ct | Landline | |
| Stamford | Choice One Communications, Inc. - Ct | Landline | |
| Old Greenwich | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Meriden | Paetec Communications, Inc. - Ct | Landline | |
| Cheshire | Cox Connecticut Telecom, Llc | Landline | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Fairfield | Paetec Communications, Inc. - Ct | Landline | |
| Norwalk | Cablevision Lightpath, Inc. - Ct | Landline | |
| New Canaan | Cablevision Lightpath, Inc. - Ct | Landline | |
| New Haven | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Greenwich | Global Crossing Local Services, Inc.-ct | Landline | |
| Milford | Southern New England Telephone Co. | Landline | |
| North Haven | Southern New England Telephone Co. | Landline | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Bridgeport | Omnipoint Communications, Inc. - Ct | Wireless | |
| Stamford | Level 3 Communications, Llc - Ct | Landline | |
| Stamford | Level 3 Communications, Llc - Ct | Landline | |
| Guilford | Southern New England Telephone Co. | Landline | |
| Westport | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Waterbury | Teleport Communications Group - New York - Ct | Landline | |
| Wilton | Southern New England Telephone Co. | Landline | |
| Stamford | Global Crossing Local Services, Inc.-ct | Landline | |
| Staten Island | Conversent Communications of Connecticut, Llc | Landline | |
| Hamden | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| New Haven | American Messaging (am), Inc. | Wireless | |
| Greenwich | Global Naps, Inc. - Ri | Landline | |
| Bethel | Peerless Network of Connecticut, Llc - Ct | Wireless | |
| Stamford | Teleport Communications Group - New York - Ct | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| Waterbury | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Darien | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Waterbury | Southern New England Telephone Co. | Landline | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| Shelton | Southern New England Telephone Co. | Landline | |
| Bridgeport | Metro Pcs, Inc. | Wireless | |
| Stamford | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| Stamford | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Wilton | Southern New England Telephone Co. | Landline | |
| Stamford | Teleport Communications Group - New York - Ct | Landline | |
| Milford | Southern New England Telephone Co. | Landline | |
| Trumbull | Teleport Communications Group - New York - Ct | Landline | |
| Waterbury | Ctc Communications Corp. - Ct | Landline | |
| Norwalk | Usa Mobility Wireless, Inc. | Wireless | |
| Greenwich | Sprint Spectrum L.p. | Wireless | |
| Stamford | Paetec Communications, Inc. - Ct | Landline | |
| Danbury | Sprint Spectrum L.p. | Wireless | |
| Shelton | Southern New England Telephone Co. | Landline | |
| Guilford | Choice One Communications, Inc. - Ct | Landline | |
| Stratford | Cablevision Lightpath, Inc. - Ct | Landline | |
| Milford | Southern New England Telephone Co. | Landline | |
| Bridgeport | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| New Canaan | Teleport Communications Group - New York - Ct | Landline | |
| Woodbury | Southern New England Telephone Co. | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| North Branford | Southern New England Telephone Co. | Landline | |
| Shelton | Southern New England Telephone Co. | Landline | |
| Waterbury | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Stamford | Level 3 Communications, Llc - Ct | Landline | |
| Stamford | Global Crossing Local Services, Inc.-ct | Landline | |
| Newtown | Teleport Communications Group - New York - Ct | Landline | |
| Greenwich | Global Crossing Local Services, Inc.-ct | Landline | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Meriden | Southern New England Telephone Co. | Landline | |
| New Haven | Sprint Spectrum L.p. | Wireless | |
| Stamford | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Stamford | Sprint Spectrum L.p. | Wireless | |
| Stamford | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Cheshire | Paetec Communications, Inc. - Ct | Landline | |
| New Haven | Cellco Partnership Dba Verizon Wireless - Ct | Landline | |
| Greenwich | Level 3 Communications, Llc - Ct | Landline | |
| Cheshire | Southern New England Telephone Co. | Landline | |
| Norwalk | Sprint Spectrum L.p. | Wireless | |
| North Branford | Teleport Communications Group - New York - Ct | Landline | |
| Waterbury | Southern New England Telephone Co. | Landline | |
| North Haven | Southern New England Telephone Co. | Landline | |
| Wilton | Cablevision Lightpath, Inc. - Ct | Landline | |
| Meriden | Southern New England Telephone Co. | Landline | |
| Fairfield | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| New Haven | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Waterbury | At&t Local | Landline | |
| Greenwich | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Milford | Teleport Communications Group - New York - Ct | Landline | |
| New Haven | Sbc Internet Services, Inc. | Landline | |
| Norwalk | Usa Mobility Wireless, Inc. | Wireless | |
| Stamford | Cablevision Lightpath, Inc. - Ct | Landline | |
| Waterbury | Southern New England Telephone Co. | Landline | |
| Norwalk | Usa Mobility Wireless, Inc. | Wireless | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| Bridgeport | Conversent Communications of Connecticut, Llc | Landline | |
| Norwalk | Sprint Spectrum L.p. | Wireless | |
| Bridgeport | Sprint Spectrum L.p. | Wireless | |
| Bridgeport | Cellco Partnership Dba Verizon Wireless - Ct | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| Wilton | Southern New England Telephone Co. | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| Waterbury | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Stamford | Paetec Communications, Inc. - Ct | Landline | |
| New Haven | Choice One Communications, Inc. - Ct | Landline | |
| Stamford | Level 3 Communications, Llc - Ct | Landline | |
| New Haven | Usa Mobility Wireless, Inc. | Wireless | |
| Norwalk | Cellco Partnership Dba Verizon Wireless - Ct | Landline | |
| Oxford | Global Crossing Local Services, Inc.-ct | Landline | |
| Wallingford | Southern New England Telephone Co. | Landline | |
| Fairfield | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| Stamford | Broadwing Communications, Llc - Ct | Landline | |
| Shelton | Cablevision Lightpath, Inc. - Ct | Landline | |
| Stamford | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| Waterbury | Peerless Network of Connecticut, Llc - Ct | Wireless | |
| New Haven | At&t Local | Landline | |
| Bridgeport | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Norwalk | Cablevision Lightpath, Inc. - Ct | Landline | |
| Waterbury | Metro Pcs, Inc. | Wireless | |
| Norwalk | Teleport Communications Group - New York - Ct | Landline | |
| Waterbury | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| New Haven | Global Naps, Inc. - Ct | Landline | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| Waterbury | Paetec Communications, Inc. - Ct | Landline | |
| Greenwich | Global Crossing Local Services, Inc.-ct | Landline | |
| Milford | Paetec Communications, Inc. - Ct | Landline | |
| Guilford | Global Crossing Local Services, Inc.-ct | Landline | |
| Oxford | Teleport Communications Group - New York - Ct | Landline | |
| Waterbury | Southern New England Telephone Co. | Landline | |
| New Haven | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Milford | Cablevision Lightpath, Inc. - Ct | Landline | |
| Guilford | Southern New England Telephone Co. | Landline | |
| Waterbury | Southern New England Telephone Co. | Landline | |
| Stamford | Cablevision Lightpath, Inc. - Ct | Landline | |
| Cheshire | Choice One Communications, Inc. - Ct | Landline | |
| Trumbull | Cablevision Lightpath, Inc. - Ct | Landline | |
| Wolcott | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Madison | Southern New England Telephone Co. | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Cos Cob | Southern New England Telephone Co. | Landline | |
| Milford | Southern New England Telephone Co. | Landline | |
| Fairfield | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| New Haven | Level 3 Communications, Llc - Ct | Landline | |
| Waterbury | Southern New England Telephone Co. | Landline | |
| Old Greenwich | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| New Haven | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Stamford | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Milford | Southern New England Telephone Co. | Landline | |
| New Haven | American Messaging (am), Inc. | Wireless | |
| Cheshire | Southern New England Telephone Co. | Landline |