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]

NXX: 480

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
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   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.