Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 475 [Rate centres in NPA 475] [Dial plan for NPA 475]

Block: A

<< 1 2 3 4 5 6 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
475-301 A New Haven CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
475-302 A Bridgeport CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-303 A Greenwich CT NYCMNY13XJX  478J NUSO, LLC 132      
475-304 A Huntington CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-305 A Waterbury CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
475-306 A New Haven CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
475-307 A Meriden CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
475-308 A New Haven CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
475-309 A Ansonia-Derby CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
475-310 A Wallingford CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920      
475-312 A Bridgeport CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
475-313 A Waterbury CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
475-314 A Huntington CT HRFRCT0300Z  321J HD CARRIER LLC 920      
475-315 A Cheshire CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920      
475-316 A Waterbury CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
475-317 A New Haven CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
475-318 A New Haven CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
475-319 A Bridgeport CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
475-320 A Ansonia-Derby CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
475-321 A New Haven CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
475-322 A Norwalk CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
475-323 A Newtown CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
475-324 A Trumbull CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-325 A Georgetown CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920      
475-326 A Waterbury CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
475-327 A Milford CT HRFRCT03XSX  516J TON80 COMMUNICATIONS, LLC 920      
475-328 A Darien CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920      
475-329 A Danbury CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920      
475-330 A Fairfield CT   612K CSC VOICE, LLC 920      
475-331 A New Haven CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
475-332 A Bridgeport CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
475-333 A Stamford CT HRFRCT03HMD  073H TELNYX LLC 920      
475-334 A Stamford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-335 A Greenwich CT NYCMNYBXDSL  639C ONVOY, LLC - CT 132      
475-336 A Darien CT HRFRCT03XOX  965H FRACTEL, LLC 920      
475-337 A Waterbury CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
475-338 A Branford CT HRFRCTCR3MD  318J COMCAST IP PHONE, LLC 920      
475-339 A Ansonia-Derby CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
475-340 A Old Greenwich CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-341 A Waterbury CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
475-342 A Ansonia-Derby CT HRFRCT03XSX  516J TON80 COMMUNICATIONS, LLC 920      
475-343 A Meriden CT BLFDCTAP2MD  5562 METROPCS, INC. 920      
475-344 A Bridgeport CT HRFRCTCR3MD  318J COMCAST IP PHONE, LLC 920      
475-345 A Bridgeport CT HRFRCT03XOX  965H FRACTEL, LLC 920      
475-346 A Stamford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2024-02-11   
475-347 A Meriden CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2024-02-11   
475-348 A Danbury CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920      
475-349 A Bridgeport CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2024-02-25   
475-350 A Stamford CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
475-351 A Bridgeport CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      

<< 1 2 3 4 5 6 >>

Last updated: Sat, 02 May 2026 12:20:53 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.