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 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
475-399 0 Stamford CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2015-11-15   
475-399 1 Stamford CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2015-11-15   
475-399 2 Stamford CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2015-11-15   
475-399 3 Stamford CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2015-12-01   
475-399 4 Stamford CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2015-12-01   
475-399 5 Stamford CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2015-12-01   
475-399 6 Stamford CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2015-11-18   
475-399 7 Stamford CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2015-11-18   
475-399 8 Stamford CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2015-11-18   
475-399 9 Stamford CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2015-11-18   
475-400 A Stamford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-400 0 Stamford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2018-01-22   
475-400 1 Stamford CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2018-01-25   
475-400 2 Stamford CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2018-01-25   
475-400 3 Stamford CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2018-01-25   
475-400 4 Stamford CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2018-01-25   
475-400 5 Stamford CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2018-01-25   
475-400 6 Stamford CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2018-01-25   
475-400 7 Stamford CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2019-05-15   
475-400 8 Stamford CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2020-02-10   
475-400 9 Stamford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2020-03-02   
475-405 A Cheshire CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-405 0 Cheshire CT NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920   2021-03-12   
475-405 1 Cheshire CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2020-07-26   
475-405 2 Cheshire CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2020-07-26   
475-405 3 Cheshire CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2020-07-26   
475-405 4 Cheshire CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2021-03-04   
475-405 5 Cheshire CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2021-03-04   
475-405 6 Cheshire CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2021-05-15   
475-405 7 Cheshire CT HRFRCTBC7MD  506J TWILIO INTERNATIONAL, INC. 920   2021-03-28   
475-405 8 Cheshire CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2021-05-15   
475-405 9 Cheshire CT HRFRCT0380Z  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2020-09-26   
475-410 A Woodbury CT NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920      
475-410 0 Woodbury CT NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920   2021-04-16   
475-410 1 Woodbury CT   515J IP HORIZON LLC 920   2022-07-23   
475-410 2 Woodbury CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2023-08-18   
475-410 3 Woodbury CT NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920   2022-01-28   
475-410 4 Woodbury CT HRFRCTBC7MD  506J TWILIO INTERNATIONAL, INC. 920   2021-04-18   
475-410 5 Woodbury CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2021-04-17   
475-410 6 Woodbury CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2021-04-17   
475-410 7 Woodbury CT NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920   2022-01-28   
475-410 8 Woodbury CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2023-08-18   
475-410 9 Woodbury CT HRFRCT0380Z  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2022-07-27   
475-414 A New Haven CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
475-414 0 New Haven CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2015-11-15   
475-414 1 New Haven CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2016-08-01   
475-414 2 New Haven CT HRFRCT0370Z  2706 CHOICE ONE COMMUNICATIONS, INC. - CT 920   2017-06-12   
475-414 3 New Haven CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2017-12-27   
475-414 4 New Haven CT MDTWCTNIGT1  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2016-10-16   
475-414 5 New Haven CT MDTWCTNIGT1  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2016-10-16   

<< 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 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 >>

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.