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% |
| Brooks Fiber Communications Of Connecticut Inc Ct | Landline | 3% |
| Verizon New York Inc | Landline | 3% |
| Cablevision Lightpath Inc Ct | Landline | 3% |
| Omnipoint Communications Inc Ct | Wireless | 2% |
| Global Crossing Local Services Inc Ct | Landline | 2% |
| Teleport Communications Group New York Ct | Landline | 2% |
| Level 3 Communications Llc Ct | Landline | 2% |
| At T Local | Landline | 1% |
| Usa Mobility Wireless Inc | Wireless | 1% |
| Choice One Communications Inc Ct | Landline | 1% |
| Paetec Communications Inc Ct | Landline | 1% |
| Peerless Network Of Connecticut Llc Ct | Wireless | < 1% |
| American Messaging Am Inc | Wireless | < 1% |
| Metro Pcs Inc | Wireless | < 1% |
| Broadwing Communications Llc Ct | Landline | < 1% |
| Teleport Communications Group Ny | Landline | < 1% |
| Global Naps Inc Ri | Landline | < 1% |
| Conversent Communications Of Connecticut Llc | Landline | < 1% |
| Mcimetro Access Transmission Services Llc | Landline | < 1% |
| Comcast Phone Of Connecticut Inc Ct | Landline | < 1% |
| Sbc Internet Services Inc | Landline | < 1% |
| Ctc Communications Corp Ct | Landline | < 1% |
| Cox Connecticut Telecom Llc | Landline | < 1% |
| Paetec Communications Inc Ny | Landline | < 1% |
| Global Naps Inc Ct | Landline | < 1% |
| Bandwidth Com Clec Llc Ct | Wireless | < 1% |
Prefixes
| Prefix | City | Carrier | Type |
|---|---|---|---|
| Bridgeport | Southern New England Telephone Co. | Landline | |
| Cos Cob | Verizon New York, Inc. | Landline | |
| Darien | Southern New England Telephone Co. | Landline | |
| Avon | At&t Local | Landline | |
| New Haven | Omnipoint Communications, Inc. - Ct | Wireless | |
| Shelton | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Shelton | Global Crossing Local Services, Inc.-ct | Landline | |
| North Haven | Southern New England Telephone Co. | Landline | |
| New Haven | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Woodbury | Southern New England Telephone Co. | Landline | |
| Naugatuck | Southern New England Telephone Co. | Landline | |
| New Haven | American Messaging (am), Inc. | Wireless | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| Easton | Cablevision Lightpath, Inc. - Ct | Landline | |
| New Haven | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Naugatuck | Teleport Communications Group - New York - Ct | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| Stamford | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Norwalk | Cellco Partnership Dba Verizon Wireless - Ct | Landline | |
| North Branford | Southern New England Telephone Co. | Landline | |
| New Haven | Sprint Spectrum L.p. | Wireless | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| Norwalk | Sprint Spectrum L.p. | Wireless | |
| Waterbury | Metro Pcs, Inc. | Wireless | |
| Old Greenwich | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Norwalk | Sprint Spectrum L.p. | Wireless | |
| Danbury | Southern New England Telephone Co. | Landline | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Westport | Southern New England Telephone Co. | Landline | |
| Darien | Southern New England Telephone Co. | Landline | |
| Bridgeport | Omnipoint Communications, Inc. - Ct | Wireless | |
| Hamden | Southern New England Telephone Co. | Landline | |
| Meriden | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Branford | Global Crossing Local Services, Inc.-ct | Landline | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Waterbury | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Danbury | Southern New England Telephone Co. | Landline | |
| Danbury | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Norwalk | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| New Fairfield | Southern New England Telephone Co. | Landline | |
| Greenwich | Paetec Communications, Inc. - Ny | Landline | |
| Milldale | Sprint Spectrum L.p. | Wireless | |
| Sandy Hook | Southern New England Telephone Co. | Landline | |
| Shelton | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| New Fairfield | Level 3 Communications, Llc - Ct | Landline | |
| Redding | Southern New England Telephone Co. | Landline | |
| Fairfield | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Trumbull | Southern New England Telephone Co. | Landline | |
| Stamford | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Wolcott | Southern New England Telephone Co. | Landline | |
| Shelton | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Weston | Cablevision Lightpath, Inc. - Ct | Landline | |
| Darien | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Stamford | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Newtown | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Meriden | Southern New England Telephone Co. | Landline | |
| Wolcott | Level 3 Communications, Llc - Ct | Landline | |
| New Haven | Teleport Communications Group - New York - Ct | Landline | |
| Shelton | Global Crossing Local Services, Inc.-ct | Landline | |
| Waterbury | New Cingular Wireless Pcs, Llc - Dc | Landline | |
| Shelton | Global Crossing Local Services, Inc.-ct | Landline | |
| Trumbull | Southern New England Telephone Co. | Landline | |
| Norwalk | Sprint Spectrum L.p. | Wireless | |
| Trumbull | Southern New England Telephone Co. | Landline | |
| Seymour | Southern New England Telephone Co. | Landline | |
| Greenwich | At&t Local | Landline | |
| Hartford | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| North Branford | Southern New England Telephone Co. | Landline | |
| Norwalk | Teleport Communications Group - New York - Ct | Landline | |
| Bridgeport | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Oxford | Teleport Communications Group - New York - Ct | Landline | |
| West Haven | Southern New England Telephone Co. | Landline | |
| Greenwich | Sprint Spectrum L.p. | Landline | |
| North Haven | Southern New England Telephone Co. | Landline | |
| New Haven | Global Crossing Local Services, Inc.-ct | Landline | |
| Greenwich | Verizon New York, Inc. | Landline | |
| Hamden | Southern New England Telephone Co. | Landline | |
| Waterbury | Sprint Spectrum L.p. | Wireless | |
| New Haven | Sprint Spectrum L.p. | Wireless | |
| Danbury | Omnipoint Communications, Inc. - Ct | Wireless | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Waterbury | Southern New England Telephone Co. | Landline | |
| Bethel | Southern New England Telephone Co. | Landline | |
| New Haven | Sprint Spectrum L.p. | Wireless | |
| Middlebury | Southern New England Telephone Co. | Landline | |
| Waterbury | Level 3 Communications, Llc - Ct | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Greenwich | Southern New England Telephone Co. | Landline | |
| New Haven | Bandwidth.com Clec, Llc - Ct | Wireless | |
| Darien | Southern New England Telephone Co. | Landline | |
| West Haven | Southern New England Telephone Co. | Landline | |
| Shelton | Southern New England Telephone Co. | Landline | |
| Norwalk | Cablevision Lightpath, Inc. - Ct | Landline | |
| Westport | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Ansonia | Choice One Communications, Inc. - Ct | Landline | |
| Old Greenwich | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Wallingford | Southern New England Telephone Co. | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| West Haven | Southern New England Telephone Co. | Landline | |
| Danbury | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| New Haven | Ctc Communications Corp. - Ct | Landline | |
| Fairfield | Global Crossing Local Services, Inc.-ct | Landline | |
| Guilford | Global Crossing Local Services, Inc.-ct | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| New Fairfield | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Darien | Southern New England Telephone Co. | Landline | |
| Hamden | Southern New England Telephone Co. | Landline | |
| North Haven | Southern New England Telephone Co. | Landline | |
| New Haven | Global Naps, Inc. - Ct | Landline | |
| Waterbury | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Meriden | Cox Connecticut Telecom, Llc | Landline | |
| Darien | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| New Haven | Omnipoint Communications, Inc. - Ct | Wireless | |
| Darien | Southern New England Telephone Co. | Landline | |
| Norwalk | Level 3 Communications, Llc - Ct | Landline | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| Bridgeport | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Darien | Southern New England Telephone Co. | Landline | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| Meriden | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Woodbury | Paetec Communications, Inc. - Ct | Landline | |
| Bridgeport | Choice One Communications, Inc. - Ct | Landline | |
| Bridgeport | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| New Haven | Paetec Communications, Inc. - Ct | Landline | |
| Stratford | Southern New England Telephone Co. | Landline | |
| Trumbull | Cablevision Lightpath, Inc. - Ct | Landline | |
| Stamford | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Oxford | Southern New England Telephone Co. | Landline | |
| West Haven | Southern New England Telephone Co. | Landline | |
| Stamford | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Stamford | Cablevision Lightpath, Inc. - Ct | Landline | |
| Trumbull | Global Crossing Local Services, Inc.-ct | Landline | |
| Westport | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Brookfield | Sprint Spectrum L.p. | Wireless | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| West Haven | Southern New England Telephone Co. | Landline | |
| Westport | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Norwalk | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Shelton | Southern New England Telephone Co. | Landline | |
| Trumbull | Southern New England Telephone Co. | Landline | |
| Darien | Southern New England Telephone Co. | Landline | |
| Bethel | Southern New England Telephone Co. | Landline | |
| Guilford | Choice One Communications, Inc. - Ct | Landline | |
| Stratford | Southern New England Telephone Co. | Landline | |
| Stamford | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Oxford | Southern New England Telephone Co. | Landline | |
| Weston | Southern New England Telephone Co. | Landline | |
| Norwalk | Cablevision Lightpath, Inc. - Ct | Landline | |
| Meriden | Southern New England Telephone Co. | Landline | |
| Wilton | Southern New England Telephone Co. | Landline | |
| Meriden | Southern New England Telephone Co. | Landline | |
| New York | Usa Mobility Wireless, Inc. | Wireless | |
| Cheshire | Southern New England Telephone Co. | Landline | |
| Stamford | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| New Haven | Cablevision Lightpath, Inc. - Ct | Landline | |
| Danbury | Usa Mobility Wireless, Inc. | Wireless | |
| Stamford | Southern New England Telephone Co. | Landline | |
| New Haven | Choice One Communications, Inc. - Ct | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Redding | At&t Local | Landline | |
| East Haven | Southern New England Telephone Co. | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| Westport | Southern New England Telephone Co. | Landline | |
| Beacon Falls | Southern New England Telephone Co. | Landline | |
| Wallingford | Southern New England Telephone Co. | Landline | |
| Bethel | Southern New England Telephone Co. | Landline | |
| Branford | Southern New England Telephone Co. | Landline | |
| Wallingford | Southern New England Telephone Co. | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| Danbury | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| Ansonia | Southern New England Telephone Co. | Landline | |
| Stratford | Cablevision Lightpath, Inc. - Ct | Landline | |
| Stamford | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Bethel | Southern New England Telephone Co. | Landline | |
| Norwalk | Cablevision Lightpath, Inc. - Ct | Landline | |
| Weston | Southern New England Telephone Co. | Landline | |
| Bridgeport | Omnipoint Communications, Inc. - Ct | Wireless | |
| Trumbull | Southern New England Telephone Co. | Landline | |
| Hamden | Southern New England Telephone Co. | Landline | |
| Stamford | Broadwing Communications, Llc - Ct | Landline | |
| Norwalk | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Trumbull | Southern New England Telephone Co. | Landline | |
| Ansonia | Omnipoint Communications, Inc. - Ct | Wireless | |
| Waterbury | Southern New England Telephone Co. | Landline | |
| Hamden | Southern New England Telephone Co. | Landline | |
| New Fairfield | Teleport Communications Group - New York - Ct | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Darien | Southern New England Telephone Co. | Landline | |
| Greenwich | Cablevision Lightpath, Inc. - Ct | Landline | |
| Orange | Southern New England Telephone Co. | Landline | |
| Shelton | Southern New England Telephone Co. | Landline | |
| Waterbury | Southern New England Telephone Co. | Wireless | |
| Trumbull | Southern New England Telephone Co. | Landline | |
| North Branford | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Easton | Southern New England Telephone Co. | Landline | |
| Danbury | Sprint Spectrum L.p. | Wireless | |
| Beacon Falls | Southern New England Telephone Co. | Landline | |
| Norwalk | Cablevision Lightpath, Inc. - Ct | Landline | |
| Bethel | Southern New England Telephone Co. | Landline | |
| Old Greenwich | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Ridgefield | Southern New England Telephone Co. | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Cos Cob | Verizon New York, Inc. | Landline | |
| Valhalla | Verizon New York, Inc. | Landline | |
| Fairfield | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| New Haven | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| New Haven | Metro Pcs, Inc. | Wireless | |
| Norwalk | Paetec Communications, Inc. - Ct | Landline | |
| Easton | Southern New England Telephone Co. | Landline | |
| Waterbury | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Shelton | Southern New England Telephone Co. | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Cos Cob | Verizon New York, Inc. | Landline | |
| New Canaan | Southern New England Telephone Co. | Landline | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| New Haven | Metro Pcs, Inc. | Wireless | |
| New Canaan | Southern New England Telephone Co. | Landline | |
| Madison | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| Stamford | Level 3 Communications, Llc - Ct | Wireless | |
| Shelton | Teleport Communications Group - New York - Ct | Landline | |
| North Haven | Southern New England Telephone Co. | Landline | |
| Milford | Southern New England Telephone Co. | Landline | |
| Darien | Southern New England Telephone Co. | Landline | |
| Stamford | Ctc Communications Corp. - Ct | Landline | |
| Bethel | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| White Plains | Verizon New York, Inc. | Landline | |
| New Haven | Level 3 Communications, Llc - Ct | Landline | |
| Guilford | Southern New England Telephone Co. | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| New Haven | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Ridgefield | Southern New England Telephone Co. | Landline | |
| Greenwich | Cablevision Lightpath, Inc. - Ct | Landline | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Waterbury | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Stamford | Usa Mobility Wireless, Inc. | Wireless | |
| Greenwich | Verizon New York, Inc. | Landline | |
| Derby | Southern New England Telephone Co. | Landline | |
| Darien | Southern New England Telephone Co. | Landline | |
| Bethel | Southern New England Telephone Co. | Landline | |
| Hamden | Southern New England Telephone Co. | Landline | |
| Stratford | Sprint Spectrum L.p. | Wireless | |
| Bridgeport | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Danbury | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| New Haven | Teleport Communications Group - New York - Ct | Landline | |
| West Haven | Southern New England Telephone Co. | Landline | |
| Stamford | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Weston | Southern New England Telephone Co. | Landline | |
| Bethel | Southern New England Telephone Co. | Landline | |
| Greenwich | Teleport Communications Group - Ny | Landline | |
| East Haven | Southern New England Telephone Co. | Landline | |
| Greenwich | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| Naugatuck | Southern New England Telephone Co. | Landline | |
| Darien | Southern New England Telephone Co. | Landline | |
| Woodbury | Southern New England Telephone Co. | Landline | |
| Weston | Southern New England Telephone Co. | Landline | |
| Greenwich | Global Crossing Local Services, Inc.-ct | Landline | |
| Trumbull | Southern New England Telephone Co. | Landline | |
| Milford | Southern New England Telephone Co. | Landline | |
| Bridgeport | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Waterbury | Southern New England Telephone Co. | Landline | |
| Norwalk | Omnipoint Communications, Inc. - Ct | Wireless | |
| Hamden | Southern New England Telephone Co. | Landline | |
| Norwalk | Conversent Communications of Connecticut, Llc | Landline | |
| New Haven | Sprint Spectrum L.p. | Wireless | |
| Milford | Southern New England Telephone Co. | Landline | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Greenwich | Omnipoint Communications, Inc. - Ct | Wireless | |
| Newtown | Southern New England Telephone Co. | Landline | |
| Milford | Choice One Communications, Inc. - Ct | Landline | |
| Waterbury | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Norwalk | Cablevision Lightpath, Inc. - Ct | Landline | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| Hamden | Southern New England Telephone Co. | Landline | |
| Redding | Southern New England Telephone Co. | Landline | |
| Stamford | Global Crossing Local Services, Inc.-ct | Landline | |
| New Haven | Sprint Spectrum L.p. | Wireless | |
| New Haven | American Messaging (am), Inc. | Wireless | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Westport | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Middletown | Sprint Spectrum L.p. | Wireless | |
| Cheshire | Teleport Communications Group - New York - Ct | Landline | |
| New Haven | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| New Haven | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Danbury | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Greenwich | Verizon New York, Inc. | Landline | |
| Ridgefield | Southern New England Telephone Co. | Landline | |
| Darien | Teleport Communications Group - New York - Ct | Landline | |
| Darien | Southern New England Telephone Co. | Landline | |
| Greenwich | Verizon New York, Inc. | Landline | |
| Wilton | Cablevision Lightpath, Inc. - Ct | Landline | |
| Bridgeport | Sprint Spectrum L.p. | Wireless | |
| Danbury | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Waterbury | Sprint Spectrum L.p. | Wireless | |
| Darien | Southern New England Telephone Co. | Landline | |
| New Fairfield | Sprint Spectrum L.p. | Landline | |
| Greenwich | Verizon New York, Inc. | Landline | |
| Greenwich | Global Crossing Local Services, Inc.-ct | Landline | |
| New Canaan | Southern New England Telephone Co. | Landline | |
| New Haven | Teleport Communications Group - New York - Ct | Landline | |
| Ridgefield | Southern New England Telephone Co. | Landline | |
| Greenwich | Verizon New York, Inc. | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Stamford | Level 3 Communications, Llc - Ct | Landline | |
| New Haven | At&t Local | Landline | |
| Bridgeport | Usa Mobility Wireless, Inc. | Wireless | |
| Waterbury | Southern New England Telephone Co. | Landline | |
| New Haven | Usa Mobility Wireless, Inc. | Wireless | |
| Darien | Southern New England Telephone Co. | Landline | |
| Waterbury | At&t Local | Landline | |
| Stamford | Teleport Communications Group - New York - Ct | Landline | |
| Staten Island | Conversent Communications of Connecticut, Llc | Landline | |
| Riverside | Southern New England Telephone Co. | Landline | |
| Darien | Southern New England Telephone Co. | Landline | |
| Milford | Paetec Communications, Inc. - Ct | Landline | |
| Norwalk | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Branford | Comcast Phone of Connecticut, Inc. - Ct | Landline | |
| Stamford | At&t Local | Landline | |
| Newtown | Southern New England Telephone Co. | Landline | |
| New Haven | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Bethel | Southern New England Telephone Co. | Landline | |
| Milford | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Shelton | Southern New England Telephone Co. | Landline | |
| Ridgefield | Southern New England Telephone Co. | Landline | |
| New Fairfield | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| New Haven | Sprint Spectrum L.p. | Wireless | |
| Old Greenwich | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Stamford | Cablevision Lightpath, Inc. - Ct | Landline | |
| Stamford | Broadwing Communications, Llc - Ct | Landline | |
| Waterbury | Southern New England Telephone Co. | Landline | |
| New Haven | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Ridgefield | Southern New England Telephone Co. | Landline | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Darien | Southern New England Telephone Co. | Landline | |
| Greenwich | Southern New England Telephone Co. | Landline | |
| Waterbury | Southern New England Telephone Co. | Landline | |
| Waterbury | Southern New England Telephone Co. | Landline | |
| Norwalk | Peerless Network of Connecticut, Llc - Ct | Wireless | |
| Trumbull | Southern New England Telephone Co. | Landline | |
| Darien | Southern New England Telephone Co. | Landline | |
| Bridgeport | Omnipoint Communications, Inc. - Ct | Wireless | |
| New Fairfield | Southern New England Telephone Co. | Landline | |
| West Hartford | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Orange | Southern New England Telephone Co. | Landline | |
| Waterbury | Southern New England Telephone Co. | Landline | |
| Stamford | Level 3 Communications, Llc - Ct | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Stamford | 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 | |
| Stamford | Cablevision Lightpath, Inc. - Ct | Wireless | |
| Newtown | Teleport Communications Group - New York - Ct | Landline | |
| Hartford | Teleport Communications Group - New York - Ct | Landline | |
| Branford | Choice One Communications, Inc. - Ct | Landline | |
| Norwalk | Sprint Spectrum L.p. | Wireless | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Wolcott | Southern New England Telephone Co. | Landline | |
| Greenwich | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| New Haven | Sprint Spectrum L.p. | Wireless | |
| Wilton | Level 3 Communications, Llc - Ct | Landline | |
| Stratford | Southern New England Telephone Co. | Landline | |
| Danbury | Level 3 Communications, Llc - Ct | Landline | |
| Waterbury | Ctc Communications Corp. - Ct | Landline | |
| New Canaan | Teleport Communications Group - New York - Ct | Landline | |
| Greenwich | Cellco Partnership Dba Verizon Wireless - Ct | Landline | |
| New Fairfield | Omnipoint Communications, Inc. - Ct | Wireless | |
| Ridgefield | Cablevision Lightpath, Inc. - Ct | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| Greenwich | Verizon New York, Inc. | Landline | |
| Hamden | Omnipoint Communications, Inc. - Ct | Wireless | |
| Waterbury | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Bridgeport | Omnipoint Communications, Inc. - Ct | Wireless | |
| Carmel | Omnipoint Communications, Inc. - Ct | Wireless | |
| Darien | Southern New England Telephone Co. | Landline | |
| Norwalk | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Danbury | Southern New England Telephone Co. | Landline | |
| New Haven | At&t Local | Landline | |
| Woodbury | Southern New England Telephone Co. | Landline | |
| Waterbury | Choice One Communications, Inc. - Ct | Landline | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| Norwalk | Sprint Spectrum L.p. | Wireless | |
| Westport | Southern New England Telephone Co. | Landline | |
| New Haven | Conversent Communications of Connecticut, Llc | Landline | |
| New Haven | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Greenwich | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Bridgeport | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Bridgeport | Omnipoint Communications, Inc. - Ct | Wireless | |
| Southbury | Southern New England Telephone Co. | Landline | |
| Waterbury | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Wilton | Southern New England Telephone Co. | Landline | |
| Danbury | Southern New England Telephone Co. | Landline | |
| Waterbury | Omnipoint Communications, Inc. - Ct | Wireless | |
| Norwalk | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Fairfield | Southern New England Telephone Co. | Landline | |
| Hamden | Southern New England Telephone Co. | Landline | |
| Orange | Southern New England Telephone Co. | Landline | |
| Westport | New Cingular Wireless Pcs, Llc - Dc | Landline | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| Bridgeport | Cablevision Lightpath, Inc. - Ct | Wireless | |
| Hamden | Cablevision Lightpath, Inc. - Ct | Landline | |
| Hamden | Southern New England Telephone Co. | Landline | |
| Hamden | Southern New England Telephone Co. | Landline | |
| New Haven | Southern New England Telephone Co. | Landline | |
| North Salem | Global Crossing Local Services, Inc.-ct | Landline | |
| New Haven | American Messaging (am), Inc. | Wireless | |
| New Haven | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Madison | Southern New England Telephone Co. | Landline | |
| Meriden | Omnipoint Communications, Inc. - Ct | Wireless | |
| Greenwich | Cablevision Lightpath, Inc. - Ct | Landline | |
| Bridgeport | Sprint Spectrum L.p. | Wireless | |
| Stamford | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Stamford | Sprint Spectrum L.p. | Wireless | |
| Oxford | Southern New England Telephone Co. | Landline | |
| Norwalk | Usa Mobility Wireless, Inc. | Wireless | |
| New Canaan | Cablevision Lightpath, Inc. - Ct | Landline | |
| New Haven | American Messaging (am), Inc. | Wireless | |
| Wallingford | Southern New England Telephone Co. | Landline | |
| Stamford | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Trumbull | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Wilton | Southern New England Telephone Co. | Landline | |
| Greenwich | Verizon New York, Inc. | Landline | |
| Waterbury | Sprint Spectrum L.p. | Wireless | |
| Bristol | Cablevision Lightpath, Inc. - Ct | Landline | |
| Trumbull | Teleport Communications Group - New York - Ct | Landline | |
| New Haven | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Norwalk | Level 3 Communications, Llc - Ct | Landline | |
| Waterbury | Southern New England Telephone Co. | Landline | |
| Darien | Southern New England Telephone Co. | Landline | |
| Southbury | Southern New England Telephone Co. | Landline | |
| Stamford | Level 3 Communications, Llc - Ct | Landline | |
| Wallingford | Southern New England Telephone Co. | Landline | |
| Stamford | Cablevision Lightpath, Inc. - Ct | Landline | |
| Waterbury | Southern New England Telephone Co. | Landline | |
| Stamford | Sprint Spectrum L.p. | Wireless | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| Bridgeport | Global Crossing Local Services, Inc.-ct | Landline | |
| Bethel | Southern New England Telephone Co. | Landline | |
| New Haven | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Greenwich | Global Naps, Inc. - Ri | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Cheshire | Choice One Communications, Inc. - Ct | Landline | |
| Ridgefield | Southern New England Telephone Co. | Landline | |
| Derby | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Old Greenwich | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Cheshire | Southern New England Telephone Co. | Landline | |
| Waterbury | Southern New England Telephone Co. | Landline | |
| Waterbury | Omnipoint Communications, Inc. - Ct | Wireless | |
| Meriden | Paetec Communications, Inc. - Ct | Landline | |
| New Haven | Sprint Spectrum L.p. | Wireless | |
| Fairfield | Cablevision Lightpath, Inc. - Ct | Landline | |
| Shelton | Cablevision Lightpath, Inc. - Ct | Landline | |
| New Fairfield | Global Crossing Local Services, Inc.-ct | Landline | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Stamford | Teleport Communications Group - New York - Ct | Landline | |
| Southbury | Southern New England Telephone Co. | Landline | |
| Monroe | Southern New England Telephone Co. | Landline | |
| Meriden | Southern New England Telephone Co. | Landline | |
| New Fairfield | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Greenwich | Verizon New York, Inc. | Landline | |
| New Haven | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| Trumbull | Southern New England Telephone Co. | Landline | |
| Darien | Southern New England Telephone Co. | Landline | |
| New Fairfield | Sprint Spectrum L.p. | Wireless | |
| Shelton | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| West Haven | Southern New England Telephone Co. | Landline | |
| Hamden | Southern New England Telephone Co. | Landline | |
| Prospect | Southern New England Telephone Co. | Landline | |
| Stamford | Global Naps, Inc. - Ct | Landline | |
| Madison | Choice One Communications, Inc. - Ct | Landline | |
| Darien | Southern New England Telephone Co. | Landline | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Bridgeport | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Ridgefield | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Stamford | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| New Haven | At&t Local | Landline | |
| Hamden | Southern New England Telephone Co. | Landline | |
| Weston | Southern New England Telephone Co. | Landline | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Westport | Southern New England Telephone Co. | Landline | |
| Madison | Southern New England Telephone Co. | Landline | |
| Trumbull | Southern New England Telephone Co. | Landline | |
| Old Greenwich | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Milford | Southern New England Telephone Co. | Landline | |
| Trumbull | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Waterbury | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Weston | Southern New England Telephone Co. | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| Waterbury | Southern New England Telephone Co. | Landline | |
| Hamden | Southern New England Telephone Co. | Landline | |
| Meriden | Southern New England Telephone Co. | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| Meriden | Southern New England Telephone Co. | Landline | |
| Milford | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Milford | Global Crossing Local Services, Inc.-ct | Landline | |
| Shelton | Southern New England Telephone Co. | Landline | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Wallingford | Southern New England Telephone Co. | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| North Branford | Southern New England Telephone Co. | Landline | |
| Danbury | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Hamden | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Darien | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Milford | Cablevision Lightpath, Inc. - Ct | Landline | |
| New Haven | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Waterbury | Southern New England Telephone Co. | Landline | |
| Stamford | Paetec Communications, Inc. - Ct | Landline | |
| Bethel | Peerless Network of Connecticut, Llc - Ct | Wireless | |
| New Haven | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| New Fairfield | At&t Local | Landline | |
| New Haven | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Guilford | Southern New England Telephone Co. | Landline | |
| Fairfield | Paetec Communications, Inc. - Ct | Landline | |
| Trumbull | Southern New England Telephone Co. | Landline | |
| Old Greenwich | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Bridgeport | Teleport Communications Group - New York - Ct | Landline | |
| Shelton | Choice One Communications, Inc. - Ct | Landline | |
| Madison | Southern New England Telephone Co. | Landline | |
| Waterbury | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Orange | Southern New England Telephone Co. | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Ridgefield | Teleport Communications Group - New York - Ct | Landline | |
| Stamford | Level 3 Communications, Llc - Ct | Landline | |
| Hamden | Southern New England Telephone Co. | Landline | |
| New Fairfield | New Cingular Wireless Pcs, Llc - Dc | Landline | |
| Hamden | Southern New England Telephone Co. | Landline | |
| New Haven | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Old Greenwich | Teleport Communications Group - New York - Ct | Landline | |
| Darien | Southern New England Telephone Co. | Landline | |
| Stamford | Usa Mobility Wireless, Inc. | Wireless | |
| Norwalk | Cablevision Lightpath, Inc. - Ct | Wireless | |
| New Haven | Cellco Partnership Dba Verizon Wireless - Ct | Landline | |
| Naugatuck | Choice One Communications, Inc. - Ct | Landline | |
| Middletown | Paetec Communications, Inc. - Ct | Landline | |
| Danbury | Sprint Spectrum L.p. | Wireless | |
| New Haven | Broadwing Communications, Llc - Ct | Landline | |
| Cheshire | Paetec Communications, Inc. - Ct | Landline | |
| Waterbury | Sprint Spectrum L.p. | Wireless | |
| New Haven | At&t Local | Landline | |
| Sandy Hook | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Wilton | Teleport Communications Group - New York - Ct | Landline | |
| West Haven | Southern New England Telephone Co. | Landline | |
| Shelton | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Greenwich | Cablevision Lightpath, Inc. - Ct | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| New Fairfield | Paetec Communications, Inc. - Ct | Landline | |
| Shelton | Southern New England Telephone Co. | Landline | |
| New Haven | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| North Haven | Southern New England Telephone Co. | Landline | |
| Waterbury | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Greenwich | Verizon New York, Inc. | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| Wallingford | Paetec Communications, Inc. - Ct | Landline | |
| Bridgeport | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| New Haven | Sprint Spectrum L.p. | Wireless | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| Cheshire | Cox Connecticut Telecom, Llc | Landline | |
| Redding | Southern New England Telephone Co. | Landline | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| New Fairfield | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Redding | Sprint Spectrum L.p. | Wireless | |
| Darien | Cablevision Lightpath, Inc. - Ct | Landline | |
| Granby | Paetec Communications, Inc. - Ct | Landline | |
| Meriden | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Bridgeport | Metro Pcs, Inc. | Wireless | |
| North Branford | Southern New England Telephone Co. | Landline | |
| Darien | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Milford | Teleport Communications Group - New York - Ct | Landline | |
| Stamford | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| New Haven | Usa Mobility Wireless, Inc. | Wireless | |
| North Haven | Teleport Communications Group - New York - Ct | Landline | |
| Stamford | Cablevision Lightpath, Inc. - Ct | Landline | |
| New Haven | Level 3 Communications, Llc - Ct | Landline | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Weston | Southern New England Telephone Co. | Landline | |
| Stamford | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Hamden | Sprint Spectrum L.p. | Wireless | |
| Hamden | Southern New England Telephone Co. | Landline | |
| Redding | Cablevision Lightpath, Inc. - Ct | Landline | |
| Guilford | Teleport Communications Group - New York - Ct | Landline | |
| Wilton | Cablevision Lightpath, Inc. - Ct | Landline | |
| Cheshire | Southern New England Telephone Co. | Landline | |
| Stamford | Omnipoint Communications, Inc. - Ct | Wireless | |
| New Haven | Bandwidth.com Clec, Llc - Ct | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Greenwich | Global Crossing Local Services, Inc.-ct | Landline | |
| Stamford | Global Crossing Local Services, Inc.-ct | Landline | |
| New Haven | Southern New England Telephone Co. | Landline | |
| New Fairfield | Southern New England Telephone Co. | Landline | |
| Bridgeport | Sprint Spectrum L.p. | Wireless | |
| Bridgeport | Cablevision Lightpath, Inc. - Ct | Wireless | |
| Bridgeport | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Bridgeport | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Greenwich | Cablevision Lightpath, Inc. - Ct | Landline | |
| Monroe | Cellco Partnership Dba Verizon Wireless - Ct | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Stamford | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Bridgeport | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Bridgeport | Southern New England Telephone Co. | Wireless | |
| West Haven | Teleport Communications Group - New York - Ct | Landline | |
| Norwalk | Usa Mobility Wireless, Inc. | Wireless | |
| Darien | Paetec Communications, Inc. - Ct | Landline | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| New Haven | At&t Local | Landline | |
| Stamford | Sprint Spectrum L.p. | Wireless | |
| Waterbury | Sprint Spectrum L.p. | Wireless | |
| Oxford | Global Crossing Local Services, Inc.-ct | Landline | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| West Haven | Southern New England Telephone Co. | Landline | |
| North Haven | Southern New England Telephone Co. | Landline | |
| Stamford | Paetec Communications, Inc. - Ct | Landline | |
| New Haven | Cellco Partnership Dba Verizon Wireless - Ct | Landline | |
| Ridgefield | Southern New England Telephone Co. | Landline | |
| Bridgeport | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Madison | Global Crossing Local Services, Inc.-ct | Landline | |
| Darien | At&t Local | Landline | |
| Cheshire | Southern New England Telephone Co. | Landline | |
| Greenwich | Sprint Spectrum L.p. | Wireless | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| New Haven | Usa Mobility Wireless, Inc. | Wireless | |
| Stratford | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| New Haven | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Stamford | Level 3 Communications, Llc - Ct | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| Danbury | Southern New England Telephone Co. | Landline | |
| Norwalk | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Westport | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Shelton | Southern New England Telephone Co. | Landline | |
| Stamford | Teleport Communications Group - New York - Ct | Landline | |
| Stamford | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Stamford | Sprint Spectrum L.p. | Wireless | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Killingworth | Sprint Spectrum L.p. | Wireless | |
| Waterbury | Southern New England Telephone Co. | Landline | |
| Guilford | Southern New England Telephone Co. | Landline | |
| Greenwich | Cablevision Lightpath, Inc. - Ct | Landline | |
| Bridgeport | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Oakdale | Choice One Communications, Inc. - Ct | Landline | |
| Meriden | Southern New England Telephone Co. | Landline | |
| Shelton | Southern New England Telephone Co. | Landline | |
| Norwalk | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Meriden | Southern New England Telephone Co. | Landline | |
| Ridgefield | Southern New England Telephone Co. | Landline | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Westport | At&t Local | Landline | |
| Milford | Southern New England Telephone Co. | Landline | |
| New Haven | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Stratford | Southern New England Telephone Co. | Landline | |
| Stratford | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| New Haven | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Greenwich | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Shelton | Paetec Communications, Inc. - Ct | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Waterbury | Southern New England Telephone Co. | Landline | |
| Wallingford | Global Crossing Local Services, Inc.-ct | Landline | |
| North Branford | Southern New England Telephone Co. | Landline | |
| New Haven | Choice One Communications, Inc. - Ct | Landline | |
| Cheshire | Teleport Communications Group - New York - Ct | Landline | |
| Ansonia | Southern New England Telephone Co. | Landline | |
| New Haven | Sbc Internet Services, Inc. | Landline | |
| Oxford | Bandwidth.com Clec, Llc - Ct | Landline | |
| Darien | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| Waterbury | Peerless Network of Connecticut, Llc - Ct | Wireless | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| Wolcott | Broadwing Communications, Llc - Ct | Landline | |
| Norwalk | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Meriden | At&t Local | Landline | |
| Norwalk | Usa Mobility Wireless, Inc. | Wireless | |
| Norwalk | Usa Mobility Wireless, Inc. | Wireless | |
| Wilton | At&t Local | Landline | |
| Stamford | Level 3 Communications, Llc - Ct | Landline | |
| Southbury | Teleport Communications Group - New York - Ct | Landline | |
| Waterbury | Southern New England Telephone Co. | Landline | |
| Norwalk | Omnipoint Communications, Inc. - Ct | Wireless | |
| Stamford | Paetec Communications, Inc. - Ct | Landline | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Stamford | Level 3 Communications, Llc - Ct | Landline | |
| Norwalk | Sprint Spectrum L.p. | Wireless | |
| Norwalk | Cablevision Lightpath, Inc. - Ct | Landline | |
| New Haven | At&t Local | Landline | |
| Bridgeport | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Bridgeport | Cellco Partnership Dba Verizon Wireless - Ct | Landline | |
| Greenwich | Cox Connecticut Telecom, Llc | Landline | |
| Wolcott | Teleport Communications Group - New York - Ct | Landline | |
| Stamford | Global Crossing Local Services, Inc.-ct | Landline | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| Naugatuck | Global Crossing Local Services, Inc.-ct | Landline | |
| Waterbury | Southern New England Telephone Co. | Landline | |
| Waterbury | Paetec Communications, Inc. - Ct | Landline | |
| Redding | Southern New England Telephone Co. | Landline | |
| Waterbury | Teleport Communications Group - New York - Ct | Landline | |
| New Haven | At&t Local | Landline | |
| Fairfield | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Middlebury | Southern New England Telephone Co. | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Greenwich | Level 3 Communications, Llc - Ct | Landline | |
| Meriden | Paetec Communications, Inc. - Ct | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| Wolcott | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| North Branford | Teleport Communications Group - New York - Ct | Landline | |
| Meriden | Mcimetro Access Transmission Services Llc | Landline | |
| Stratford | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| New Haven | Comcast Phone of Connecticut, Inc. - Ct | Landline | |
| Westport | Southern New England Telephone Co. | Landline | |
| Meriden | Teleport Communications Group - New York - Ct | Landline | |
| Westport | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Norwalk | Sprint Spectrum L.p. | Wireless | |
| Wallingford | Southern New England Telephone Co. | Landline | |
| Bridgeport | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| New Haven | Southern New England Telephone Co. | Landline | |
| Waterbury | Southern New England Telephone Co. | Landline | |
| Norwalk | At&t Local | Landline | |
| Meriden | Southern New England Telephone Co. | Landline | |
| Trumbull | Teleport Communications Group - New York - Ct | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Fairfield | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| New Haven | Southern New England Telephone Co. | Landline | |
| New Haven | Sprint Spectrum L.p. | Wireless | |
| Wallingford | Southern New England Telephone Co. | Landline | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| Norwalk | Cablevision Lightpath, Inc. - Ct | Landline | |
| Norwalk | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Bridgeport | Conversent Communications of Connecticut, Llc | Landline | |
| Bridgeport | Sprint Spectrum L.p. | Wireless | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| Wilton | Southern New England Telephone Co. | Landline | |
| Bridgeport | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Milford | Southern New England Telephone Co. | Landline | |
| Bridgeport | Sprint Spectrum L.p. | Wireless | |
| New Haven | Omnipoint Communications, Inc. - Ct | Wireless | |
| West Haven | Southern New England Telephone Co. | Landline | |
| Meriden | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| West Haven | Southern New England Telephone Co. | Landline | |
| Stamford | Southern New England Telephone Co. | Landline | |
| Branford | Comcast Phone of Connecticut, Inc. - Ct | Landline | |
| Westport | Southern New England Telephone Co. | Landline | |
| Wallingford | Southern New England Telephone Co. | Landline | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| New Haven | Comcast Phone of Connecticut, Inc. - Ct | Landline | |
| Cos Cob | Southern New England Telephone Co. | Landline | |
| Milford | Cablevision Lightpath, Inc. - Ct | Landline | |
| New Haven | Cellco Partnership Dba Verizon Wireless - Ct | Wireless | |
| Milford | Southern New England Telephone Co. | Landline | |
| Darien | Southern New England Telephone Co. | Landline | |
| Waterbury | American Messaging (am), Inc. | Wireless | |
| Waterbury | Southern New England Telephone Co. | Landline | |
| Wallingford | Choice One Communications, Inc. - Ct | Landline | |
| New Canaan | Brooks Fiber Communications of Connecticut Inc-ct | Landline | |
| Wallingford | Southern New England Telephone Co. | Landline | |
| Norwalk | Southern New England Telephone Co. | Landline | |
| Waterbury | New Cingular Wireless Pcs, Llc - Dc | Wireless | |
| Bridgeport | Southern New England Telephone Co. | Landline | |
| Greenwich | Teleport Communications Group - Ny | Landline | |
| Trumbull | Level 3 Communications, Llc - Ct | Landline | |
| Meriden | Metro Pcs, Inc. | Wireless |