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: 265

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
475-265 A Trumbull CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920      
475-265 0 Trumbull CT   199F BANDWIDTH.COM CLEC, LLC - CT 920   2020-04-04   
475-265 1 Trumbull CT   539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2020-04-05   
475-265 2 Trumbull CT   639C ONVOY, LLC - CT 920   2020-05-24   
475-265 3 Trumbull CT   639C ONVOY, LLC - CT 920   2020-05-24   
475-265 4 Trumbull CT   199F BANDWIDTH.COM CLEC, LLC - CT 920   2021-10-28   
475-265 5 Trumbull CT   639C ONVOY, LLC - CT 920   2020-08-20   
475-265 6 Trumbull CT   639C ONVOY, LLC - CT 920   2020-08-20   
475-265 7 Trumbull CT   639C ONVOY, LLC - CT 920   2020-11-22   
475-265 8 Trumbull CT   639C ONVOY, LLC - CT 920   2020-11-22   
475-265 9 Trumbull CT   624H ONVOY SPECTRUM, LLC 920   2021-03-12   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.