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
475-410 A Woodbury CT NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920      
475-414 A New Haven CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
475-419 A Stamford CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
475-422 A Bridgeport CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
475-426 A Ridgefield CT HRFRCT03XSX  516J TON80 COMMUNICATIONS, LLC 920      
475-434 A New Haven CT BLFDCTAP2MD  5562 METROPCS, INC. 920      
475-439 A Ansonia-Derby CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920      
475-441 A New Haven CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
475-444 A Newtown CT HRFRCT0380Z  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920      
475-445 A Newtown CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-447 A Byram CT NYCMNY37TMD  624H ONVOY SPECTRUM, LLC 132      
475-449 A Bridgeport CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
475-450 A Bridgeport CT HRFRCT0344Z  866H BARR TEL USA, INC. - CT 920      
475-454 A Danbury CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-455 A Ansonia-Derby CT HRFRCT03XOX  965H FRACTEL, LLC 920      
475-459 A Norwalk CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
475-463 A Seymour CT HRFRCT03XSX  516J TON80 COMMUNICATIONS, LLC 920      
475-465 A Old Greenwich CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-466 A Madison CT HRFRCT03XSX  516J TON80 COMMUNICATIONS, LLC 920      
475-467 A Trumbull CT HRFRCT03XSX  516J TON80 COMMUNICATIONS, LLC 920      
475-470 A Norwalk CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-471 A Westport CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-472 A Wilton CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-473 A Woodbury CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-474 A Trumbull CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-476 A Bridgeport CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-477 A Stamford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-480 A New Haven CT HRFRCT0344Z  866H BARR TEL USA, INC. - CT 920      
475-489 A Norwalk CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
475-500 A Greenwich CT NYCMNYBXDSL  639C ONVOY, LLC - CT 132      
475-501 A Georgetown CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-522 A Madison CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920      
475-529 A Danbury CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
475-544 A Norwalk CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
475-548 A Meriden CT HRFRCT03XSX  516J TON80 COMMUNICATIONS, LLC 920      
475-549 A Milford CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920      
475-550 A Stamford CT HRFRCT0344Z  866H BARR TEL USA, INC. - CT 920      
475-557 A Waterbury CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
475-558 A New Canaan CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920      
475-559 A Waterbury CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
475-575 A Ridgefield CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-600 A Seymour CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-619 A Stamford CT SMFRCTCTDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
475-622 A Wolcott CT HRFRCT03XSX  516J TON80 COMMUNICATIONS, LLC 920      
475-639 A Redding CT HRFRCT03XSX  516J TON80 COMMUNICATIONS, LLC 920      
475-644 A Georgetown CT HRFRCT03XSX  516J TON80 COMMUNICATIONS, LLC 920      
475-655 A New Haven CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
475-666 A Westport CT HRFRCT0380Z  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920      
475-673 A Norwalk CT HRFRCT03XSX  516J TON80 COMMUNICATIONS, LLC 920      
475-675 A Seymour CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - 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.