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: 473

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
475-473 A Woodbury CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-473 0 Woodbury CT   539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2020-04-10   
475-473 1 Woodbury CT   073H TELNYX LLC 920   2020-10-01   
475-473 2 Woodbury CT   639C ONVOY, LLC - CT 920   2019-09-13   
475-473 3 Woodbury CT   639C ONVOY, LLC - CT 920   2019-09-13   
475-473 4 Woodbury CT   4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2019-10-12   
475-473 5 Woodbury CT   639C ONVOY, LLC - CT 920   2020-11-22   
475-473 6 Woodbury CT   639C ONVOY, LLC - CT 920   2020-11-22   
475-473 7 Woodbury CT   639C ONVOY, LLC - CT 920   2020-11-22   
475-473 8 Woodbury CT   639C ONVOY, LLC - CT 920   2020-07-06   
475-473 9 Woodbury CT   639C ONVOY, LLC - CT 920   2020-07-06   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.