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: 203

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
475-203 A Wallingford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-203 0 Wallingford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-203 1 Wallingford CT   639C ONVOY, LLC - CT 920      
475-203 2 Wallingford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-203 3 Wallingford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-203 4 Wallingford CT   639C ONVOY, LLC - CT 920      
475-203 5 Wallingford CT   639C ONVOY, LLC - CT 920      
475-203 6 Wallingford CT   639C ONVOY, LLC - CT 920      
475-203 7 Wallingford CT   639C ONVOY, LLC - CT 920      
475-203 8 Wallingford CT   639C ONVOY, LLC - CT 920      
475-203 9 Wallingford CT   639C ONVOY, LLC - CT 920      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.