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]

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
475-472 4 Wilton CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2021-03-04   
475-472 5 Wilton CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2021-03-04   
475-472 6 Wilton CT NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920   2022-02-03   
475-472 7 Wilton CT   6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2025-04-10   
475-472 8 Wilton CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2020-07-05   
475-472 9 Wilton CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2020-07-05   
475-473 A Woodbury CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-473 0 Woodbury CT HRFRCT0380Z  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2020-04-10   
475-473 1 Woodbury CT HRFRCTBC2MD  073H TELNYX LLC 920   2020-10-01   
475-473 2 Woodbury CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2019-09-13   
475-473 3 Woodbury CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2019-09-13   
475-473 4 Woodbury CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2019-10-12   
475-473 5 Woodbury CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2020-11-22   
475-473 6 Woodbury CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2020-11-22   
475-473 7 Woodbury CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2020-11-22   
475-473 8 Woodbury CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2020-07-06   
475-473 9 Woodbury CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2020-07-06   
475-474 A Trumbull CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-474 0 Trumbull CT NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920   2022-01-07   
475-474 1 Trumbull CT NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920   2021-11-08   
475-474 2 Trumbull CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2025-01-09   
475-474 3 Trumbull CT NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920   2021-11-08   
475-474 4 Trumbull CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2021-04-05   
475-474 5 Trumbull CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2021-04-05   
475-474 6 Trumbull CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2021-04-05   
475-474 7 Trumbull CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2021-04-05   
475-474 8 Trumbull CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2021-04-05   
475-474 9 Trumbull CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2021-10-28   
475-476 A Bridgeport CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-476 0 Bridgeport CT   145J TERRA NOVA TELECOM INC. 920   2026-02-06   
475-476 1 Bridgeport CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2020-07-05   
475-476 2 Bridgeport CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2020-07-05   
475-476 3 Bridgeport CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2020-02-24   
475-476 4 Bridgeport CT HRFRCT0380Z  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2020-03-13   
475-476 5 Bridgeport CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2020-07-18   
475-476 6 Bridgeport CT HRFRCT0383Z  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920   2019-06-08   
475-476 7 Bridgeport CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2019-04-25   
475-476 8 Bridgeport CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2019-04-25   
475-476 9 Bridgeport CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2020-02-24   
475-477 A Stamford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-477 0 Stamford CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2020-02-24   
475-477 1 Stamford CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2020-01-17   
475-477 2 Stamford CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2020-02-24   
475-477 3 Stamford CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2020-02-24   
475-477 4 Stamford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2020-01-16   
475-477 5 Stamford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2020-01-16   
475-477 6 Stamford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2020-01-16   
475-477 7 Stamford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2020-01-16   
475-477 8 Stamford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2020-03-02   
475-477 9 Stamford CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2020-02-24   
475-480 A New Haven CT HRFRCT0344Z  866H BARR TEL USA, INC. - CT 920      
475-480 0 New Haven CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2022-08-20   
475-480 1 New Haven CT HRFRCT0344Z  866H BARR TEL USA, INC. - CT 920   2022-04-22   
475-480 2 New Haven CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2022-08-20   
475-480 3 New Haven CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2022-08-20   
475-480 4 New Haven CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2022-08-20   
475-480 5 New Haven CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2022-08-20   
475-480 6 New Haven CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2022-08-20   
475-480 7 New Haven CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2022-08-20   
475-480 8 New Haven CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2022-09-25   
475-480 9 New Haven CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2022-09-25   
475-489 A Norwalk CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
475-489 0 Norwalk CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2016-01-16   
475-489 1 Norwalk CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2016-01-16   
475-489 2 Norwalk CT   145J TERRA NOVA TELECOM INC. 920   2026-02-05   
475-489 3 Norwalk CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2016-01-16   
475-489 4 Norwalk CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2016-01-16   
475-489 5 Norwalk CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2017-01-13   
475-489 6 Norwalk CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2016-03-29   
475-489 7 Norwalk CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2016-03-29   
475-489 8 Norwalk CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2016-03-29   
475-489 9 Norwalk CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2019-03-29   
475-500 A Greenwich CT NYCMNYBXDSL  639C ONVOY, LLC - CT 132      
475-500 0 Greenwich CT NYCMNYBXDSL  639C ONVOY, LLC - CT 132   2019-09-12   
475-500 1 Greenwich CT NYCMNYZRDBS  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 132   2019-09-13   
475-500 2 Greenwich CT NYCMNYBXDSL  639C ONVOY, LLC - CT 132   2020-03-02   
475-500 3 Greenwich CT NYCMNYBXDSL  639C ONVOY, LLC - CT 132   2020-03-02   
475-500 4 Greenwich CT NYCMNYZRDBS  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 132   2020-04-10   
475-500 5 Greenwich CT NYCMNYBXDSL  639C ONVOY, LLC - CT 132   2019-09-12   
475-500 6 Greenwich CT NYCMNYBXDSL  639C ONVOY, LLC - CT 132   2024-08-14   
475-500 7 Greenwich CT NYCMNYBXDSL  639C ONVOY, LLC - CT 132   2020-07-06   
475-500 8 Greenwich CT NYCMNYBXDSL  639C ONVOY, LLC - CT 132   2020-07-06   
475-500 9 Greenwich CT NYCMNYBXDSL  639C ONVOY, LLC - CT 132   2020-07-06   
475-501 A Georgetown CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-501 0 Georgetown CT NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920   2021-03-12   
475-501 1 Georgetown CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2020-08-10   
475-501 2 Georgetown CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2020-08-10   
475-501 3 Georgetown CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2021-03-04   
475-501 4 Georgetown CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2021-03-04   
475-501 6 Georgetown CT   5562 METROPCS, INC. 920   2021-12-31   
475-501 7 Georgetown CT NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920   2022-02-20   
475-501 8 Georgetown CT NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920   2022-02-20   
475-501 9 Georgetown CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2023-11-10   
475-522 A Madison CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920      
475-522 0 Madison CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2015-06-21   
475-522 1 Madison CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2015-06-21   
475-522 2 Madison CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2019-08-09   
475-522 3 Madison CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2020-07-05   
475-522 4 Madison CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2021-03-04   
475-522 5 Madison CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2021-03-04   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 >>

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.