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: 361

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
475-361 A Cheshire CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2024-04-07   
475-361 0 Cheshire CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2024-04-07   
475-361 1 Cheshire CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2024-04-07   
475-361 3 Cheshire CT   6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2025-06-19   
475-361 5 Cheshire CT HRFRCT0389Z  490J DISH WIRELESS, LLC 920   2025-01-09   
475-361 6 Cheshire CT HRFRCT0389Z  490J DISH WIRELESS, LLC 920   2024-11-21   
475-361 8 Cheshire CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2024-05-11   
475-361 9 Cheshire CT   639C ONVOY, LLC - CT 920   2025-05-02   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.