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: 221

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
475-221 A Branford CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920      
475-221 0 Branford CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2014-10-13   
475-221 1 Branford CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2014-10-13   
475-221 2 Branford CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2015-01-19   
475-221 3 Branford CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2015-01-19   
475-221 4 Branford CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2015-05-10   
475-221 5 Branford CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2015-05-10   
475-221 6 Branford CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2015-05-10   
475-221 7 Branford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2015-05-09   
475-221 8 Branford CT HRFRCTCR3MD  318J COMCAST IP PHONE, LLC 920   2015-06-27   
475-221 9 Branford CT HRFRCT03HMD  073H TELNYX LLC 920   2017-06-05   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.