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:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
475-348 A Danbury CT   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2020-05-17   
475-348 0 Danbury CT   539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2020-05-18   
475-348 1 Danbury CT   539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2020-06-18   
475-348 7 Danbury CT   639C ONVOY, LLC - CT 920   2020-06-21   
475-348 8 Danbury CT   639C ONVOY, LLC - CT 920   2020-06-21   
475-348 9 Danbury CT   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2020-05-17   

Last updated: Thu, 10 Sep 2020 02:15:24 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.