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: 454

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
475-454 A Danbury CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-454 0 Danbury CT HRFRCTBC2MD  073H TELNYX LLC 920   2021-03-01   
475-454 1 Danbury CT NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920   2021-03-12   
475-454 2 Danbury CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2021-02-18   
475-454 3 Danbury CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2021-02-18   
475-454 4 Danbury CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2020-12-26   
475-454 5 Danbury CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2020-12-26   
475-454 6 Danbury CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2021-02-18   
475-454 7 Danbury CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2021-02-18   
475-454 8 Danbury CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2021-02-18   
475-454 9 Danbury CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2025-01-05   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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