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: 338

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
475-338 A Branford CT HRFRCTCR3MD  318J COMCAST IP PHONE, LLC 920      
475-338 0 Branford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2018-04-06   
475-338 1 Branford CT HRFRCTCR3MD  318J COMCAST IP PHONE, LLC 920   2017-11-12   
475-338 2 Branford CT HRFRCT0380Z  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2019-08-29   
475-338 3 Branford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2020-07-05   
475-338 4 Branford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2021-03-04   
475-338 5 Branford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2021-03-04   
475-338 6 Branford CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2019-11-15   
475-338 7 Branford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2019-03-29   
475-338 8 Branford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2018-01-04   
475-338 9 Branford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2019-03-29   

Last updated: Fri, 28 Jun 2024 03:14:50 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.