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NDC: 203

This is the National Destination Code(NDC):203 page list. Its detail is as below.
Area code 203 is one of the original 86 area codes created by AT&T and the Bell System in 1947. It originally served the entire state of Connecticut. In 1995, area code 860 was created as an overlay to area code 203. In 2009, area code 475 was created as an overlay to area code 203. Currently, the largest city it serves is Bridgeport, CT, and it overlaps coverage areas with area code 475.
Prefix State Primary city Usage Carrier
(203) 200- Connecticut New Haven Landline Bandwidth.com Clec
(203) 201- Connecticut New Haven Wireless Usa Mobility Wireless
(203) 202- Connecticut Darien Landline Cablevision Lightpath
(203) 204- Connecticut Guilford Landline Teleport Communications America
(203) 205- Connecticut Danbury Landline Southern New England Telephone Co.
(203) 206- Connecticut Waterbury Wireless New Cingular Wireless PCS - DC
(203) 207- Connecticut Danbury Landline Southern New England Telephone Co.
(203) 208- Connecticut Branford Landline Comcast Phone Of Connecticut
(203) 209- Connecticut Bridgeport Landline Cellco Partnership DBA Verizon Wireless
(203) 210- Connecticut Wilton Landline Cablevision Lightpath
(203) 212- Connecticut Bridgeport Wireless New Cingular Wireless PCS - DC
(203) 213- Connecticut Meriden Wireless New Cingular Wireless PCS - DC
(203) 214- Connecticut New Haven Wireless New Cingular Wireless PCS - DC
(203) 215- Connecticut New Haven Wireless New Cingular Wireless PCS - DC
(203) 216- Connecticut Westport Wireless New Cingular Wireless PCS - DC
(203) 217- Connecticut Waterbury Wireless New Cingular Wireless PCS - DC
(203) 218- Connecticut Bridgeport Wireless New Cingular Wireless PCS - DC
(203) 219- Connecticut Stamford Wireless New Cingular Wireless PCS - DC
(203) 220- Connecticut Trumbull Landline Cablevision Lightpath
(203) 221- Connecticut Westport Landline Southern New England Telephone Co.
(203) 222- Connecticut Westport Landline Southern New England Telephone Co.
(203) 223- Connecticut Stamford Wireless Sprint Spectrum L.p.
(203) 224- Connecticut Bridgeport Landline Southern New England Telephone Co.
(203) 225- Connecticut Huntington Landline Southern New England Telephone Co.
(203) 226- Connecticut Westport Landline Southern New England Telephone Co.
(203) 227- Connecticut Westport Landline Southern New England Telephone Co.
(203) 228- Connecticut Waterbury Wireless Cellco Partnership DBA Verizon Wireless
(203) 229- Connecticut Norwalk Landline Southern New England Telephone Co.
(203) 230- Connecticut New Haven Landline Southern New England Telephone Co.
(203) 231- Connecticut Derby Wireless Cellco Partnership DBA Verizon Wireless
(203) 232- Connecticut Waterbury Wireless Cellco Partnership DBA Verizon Wireless
(203) 233- Connecticut Waterbury Wireless Cellco Partnership DBA Verizon Wireless
(203) 234- Connecticut New Haven Landline Southern New England Telephone Co.
(203) 235- Connecticut Meriden Landline Southern New England Telephone Co.
(203) 236- Connecticut Waterbury Landline Southern New England Telephone Co.
(203) 237- Connecticut Meriden Landline Southern New England Telephone Co.
(203) 238- Connecticut Meriden Landline Southern New England Telephone Co.
(203) 239- Connecticut New Haven Landline Southern New England Telephone Co.
(203) 240- Connecticut Danbury Wireless Cellco Partnership DBA Verizon Wireless
(203) 241- Connecticut Danbury Wireless Cellco Partnership DBA Verizon Wireless
(203) 242- Connecticut Huntington Landline Cablevision Lightpath
(203) 243- Connecticut Bridgeport Wireless Omnipoint Communications
(203) 244- Connecticut Ridgefield Landline Cablevision Lightpath
(203) 245- Connecticut Madison Landline Southern New England Telephone Co.
(203) 246- Connecticut Norwalk Wireless Cellco Partnership DBA Verizon Wireless
(203) 247- Connecticut Norwalk Wireless Cellco Partnership DBA Verizon Wireless
(203) 248- Connecticut New Haven Landline Southern New England Telephone Co.
(203) 249- Connecticut Stamford Wireless Cellco Partnership DBA Verizon Wireless
(203) 250- Connecticut Cheshire Landline Southern New England Telephone Co.
(203) 251- Connecticut Stamford Landline Southern New England Telephone Co.
(203) 252- Connecticut Stamford Landline Cablevision Lightpath
(203) 253- Connecticut Stamford Wireless Cellco Partnership DBA Verizon Wireless
(203) 254- Connecticut Fairfield Landline Southern New England Telephone Co.
(203) 255- Connecticut Fairfield Landline Southern New England Telephone Co.
(203) 256- Connecticut Fairfield Landline Southern New England Telephone Co.
(203) 257- Connecticut Bridgeport Wireless Cellco Partnership DBA Verizon Wireless
(203) 258- Connecticut Bridgeport Wireless Cellco Partnership DBA Verizon Wireless
(203) 259- Connecticut Fairfield Landline Southern New England Telephone Co.
(203) 260- Connecticut Bridgeport Wireless New Cingular Wireless PCS - DC
(203) 261- Connecticut Trumbull Landline Southern New England Telephone Co.
(203) 262- Connecticut Southbury Landline Southern New England Telephone Co.
(203) 263- Connecticut Woodbury Landline Southern New England Telephone Co.
(203) 264- Connecticut Southbury Landline Southern New England Telephone Co.
(203) 265- Connecticut Wallingford Landline Southern New England Telephone Co.
(203) 266- Connecticut Woodbury Landline Southern New England Telephone Co.
(203) 267- Connecticut Southbury Landline Southern New England Telephone Co.
(203) 268- Connecticut Trumbull Landline Southern New England Telephone Co.
(203) 269- Connecticut Wallingford Landline Southern New England Telephone Co.
(203) 270- Connecticut Newtown Landline Southern New England Telephone Co.
(203) 271- Connecticut Cheshire Landline Southern New England Telephone Co.
(203) 272- Connecticut Cheshire Landline Southern New England Telephone Co.
(203) 273- Connecticut Stamford Wireless Cellco Partnership DBA Verizon Wireless
(203) 274- Connecticut Stamford Wireless New Cingular Wireless PCS - DC
(203) 275- Connecticut Bridgeport Landline Southern New England Telephone Co.
(203) 276- Connecticut Stamford Landline Cablevision Lightpath
(203) 277- Connecticut Old Greenwich Landline Brooks Fiber Communications Of Connecticut Inc-ct
(203) 278- Connecticut Derby Wireless Omnipoint Communications
(203) 279- Connecticut Bridgeport Wireless Usa Mobility Wireless
(203) 280- Connecticut Darien Landline Brooks Fiber Communications Of Connecticut Inc-ct
(203) 281- Connecticut New Haven Landline Southern New England Telephone Co.
(203) 282- Connecticut Stamford Wireless Usa Mobility Wireless
(203) 283- Connecticut Milford Landline Cablevision Lightpath
(203) 284- Connecticut Wallingford Landline Southern New England Telephone Co.
(203) 285- Connecticut New Haven Landline Teleport Communications America
(203) 286- Connecticut Norwalk Landline Conversent Communications Of Connecticut
(203) 287- Connecticut New Haven Landline Southern New England Telephone Co.
(203) 288- Connecticut New Haven Landline Southern New England Telephone Co.
(203) 289- Connecticut Danbury Wireless Usa Mobility Wireless
(203) 290- Connecticut Bridgeport Wireless Omnipoint Communications
(203) 291- Connecticut Westport Landline Southern New England Telephone Co.
(203) 292- Connecticut Fairfield Landline Cablevision Lightpath
(203) 293- Connecticut Stamford Landline Brooks Fiber Communications Of Connecticut Inc-ct
(203) 294- Connecticut Wallingford Landline Southern New England Telephone Co.
(203) 295- Connecticut Stamford Landline Brooks Fiber Communications Of Connecticut Inc-ct
(203) 296- Connecticut Bridgeport Landline Brooks Fiber Communications Of Connecticut Inc-ct
(203) 297- Connecticut Danbury Landline Brooks Fiber Communications Of Connecticut Inc-ct
(203) 298- Connecticut New Haven Landline Cablevision Lightpath
(203) 299- Connecticut Norwalk Landline Southern New England Telephone Co.
(203) 300- Connecticut Danbury Wireless Omnipoint Communications
(203) 301- Connecticut Milford Landline Southern New England Telephone Co.