There are 800 phone number prefixes within area code 203. Additionally, there are more than 2,000 phone numbers in this area code that have received at least one user report. The location of calls from area code 203 is Connecticut, USA. Most numbers in this area code are in US Eastern time, where the time is currently 11:50:36 AM on October 4, 2024.
Choose a phone number from the list below to browse user reports for . You can also use the search box above to search for user reports about any phone number, or to file a report about any phone number.
| Prefix | City / State | Primary Telco |
|---|---|---|
| 203-300 | Danbury, CT | Omnipoint Communications, Inc. - Ct |
| 203-301 | Milford, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-302 | Greenwich, CT | Tc Systems, Inc. - Ny |
| 203-303 | Wallingford, CT | Teleport Communications America, Llc - Ct |
| 203-304 | Newtown, CT | Teleport Communications America, Llc - Ct |
| 203-305 | Ansonia-derby, CT | New Cingular Wireless Pcs, Llc - Dc |
| 203-306 | Milford, CT | Choice One Communications, Inc. - Ct |
| 203-307 | Fairfield, CT | Mcimetro Access Transmission Services Llc - Ct |
| 203-308 | Ansonia-derby, CT | Cellco Partnership Dba Verizon Wireless - Ct |
| 203-309 | Darien, CT | Sprint Spectrum, L.p. |
| 203-310 | New Canaan, CT | Mcimetro Access Transmission Services Llc - Ct |
| 203-311 | Connecticut | |
| 203-312 | Danbury, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-313 | Danbury, CT | Cellco Partnership Dba Verizon Wireless - Ct |
| 203-314 | New Haven, CT | Cellco Partnership Dba Verizon Wireless - Ct |
| 203-315 | Branford, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-316 | Stamford, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-317 | Meriden, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-318 | Madison, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-319 | Fairfield, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-320 | Darien, CT | Mcimetro Access Transmission Services Llc - Ct |
| 203-321 | Stamford, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-322 | Stamford, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-323 | Stamford, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-324 | Stamford, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-325 | Stamford, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-326 | Stamford, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-327 | Stamford, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-328 | Stamford, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-329 | Stamford, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-330 | Bridgeport, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-331 | Bridgeport, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-332 | Bridgeport, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-333 | Bridgeport, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-334 | Bridgeport, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-335 | Bridgeport, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-336 | Bridgeport, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-337 | Bridgeport, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-338 | Bridgeport, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-339 | Bridgeport, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-340 | Greenwich, CT | Cablevision Lightpath, Inc. - Ct |
| 203-341 | Westport, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-342 | Bridgeport, CT | Usa Mobility Wireless, Inc. |
| 203-343 | Ansonia-derby, CT | New Cingular Wireless Pcs, Llc - Dc |
| 203-344 | Old Greenwich, CT | Cablevision Lightpath, Inc. - Ct |
| 203-345 | Bridgeport, CT | Cablevision Lightpath, Inc. - Ct |
| 203-346 | Waterbury, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-347 | Byram, CT | Level 3 Communications, Llc - Ct |
| 203-348 | Stamford, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-349 | Westport, CT | Teleport Communications America, Llc - Ct |
| 203-350 | Madison, CT | Teleport Communications America, Llc - Ct |
| 203-351 | Stamford, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-352 | Stamford, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-353 | Stamford, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-354 | Norwalk, CT | Cablevision Lightpath, Inc. - Ct |
| 203-355 | Stamford, CT | Cablevision Lightpath, Inc. - Ct |
| 203-356 | Stamford, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-357 | Stamford, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-358 | Stamford, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-359 | Stamford, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-360 | Bridgeport, CT | Metropcs, Inc. |
| 203-361 | New Haven, CT | Level 3 Communications, Llc - Ct |
| 203-362 | Bridgeport, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-363 | Stamford, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-364 | Newtown, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-365 | Bridgeport, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-366 | Bridgeport, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-367 | Bridgeport, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-368 | Bridgeport, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-369 | Old Greenwich, CT | Mcimetro Access Transmission Services Llc - Ct |
| 203-370 | New Haven, CT | American Messaging Services, Llc |
| 203-371 | Bridgeport, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-372 | Bridgeport, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-373 | Bridgeport, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-374 | Bridgeport, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-375 | Bridgeport, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-376 | New Haven, CT | Cellco Partnership Dba Verizon Wireless - Ct |
| 203-377 | Bridgeport, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-378 | Bridgeport, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-379 | Meriden, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-380 | Bridgeport, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-381 | Bridgeport, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-382 | Bridgeport, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-383 | Bridgeport, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-384 | Bridgeport, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-385 | Bridgeport, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-386 | Bridgeport, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-387 | New Haven, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-388 | Stamford, CT | Mcimetro Access Transmission Services Llc - Ct |
| 203-389 | New Haven, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-390 | New Haven, CT | Teleport Communications America, Llc - Ct |
| 203-391 | Stamford, CT | Mcimetro Access Transmission Services Llc - Ct |
| 203-392 | New Haven, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-393 | New Haven, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-394 | Bridgeport, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-395 | Bridgeport, CT | Sprint Spectrum, L.p. |
| 203-396 | Bridgeport, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-397 | New Haven, CT | Southern New England Telco Dba Frontier Comm Of Ct |
| 203-398 | Norwalk, CT | Usa Mobility Wireless, Inc. |
| 203-399 | Stamford, CT | Mcimetro Access Transmission Services Llc - Ct |
October 1, 2024