Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 475 [Rate centres in NPA 475] [Dial plan for NPA 475]

NXX: 256

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
475-256 A Danbury CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
475-256 0 Danbury CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2019-04-22   
475-256 1 Danbury CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2019-04-22   
475-256 2 Danbury CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2019-06-07   
475-256 3 Danbury CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2020-03-17   
475-256 4 Danbury CT HRFRCTCR3MD  318J COMCAST IP PHONE, LLC 920   2019-03-20   
475-256 5 Danbury CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2020-02-28   
475-256 6 Danbury CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2020-02-28   
475-256 7 Danbury CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2019-12-16   
475-256 8 Danbury CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2019-10-07   
475-256 9 Danbury CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2019-02-23   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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