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: 284

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
475-284 A Bridgeport CT BRPTCT01ZMD  478J NUSO, LLC 920      
475-284 0 Bridgeport CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2020-11-21   
475-284 1 Bridgeport CT BRPTCT01ZMD  478J NUSO, LLC 920   2020-11-20   
475-284 2 Bridgeport CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2021-02-18   
475-284 3 Bridgeport CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2021-02-18   
475-284 4 Bridgeport CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2021-01-01   
475-284 5 Bridgeport CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2021-01-01   
475-284 6 Bridgeport CT NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920   2021-03-12   
475-284 7 Bridgeport CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2021-02-18   
475-284 8 Bridgeport CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2021-02-18   
475-284 9 Bridgeport CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2020-11-27   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.