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: 270

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
475-270 A Wallingford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-270 0 Wallingford CT   624H ONVOY SPECTRUM, LLC 920   2021-03-12   
475-270 1 Wallingford CT   639C ONVOY, LLC - CT 920   2020-07-26   
475-270 2 Wallingford CT   639C ONVOY, LLC - CT 920   2020-11-22   
475-270 3 Wallingford CT   639C ONVOY, LLC - CT 920   2024-10-20   
475-270 4 Wallingford CT   639C ONVOY, LLC - CT 920   2021-02-27   
475-270 5 Wallingford CT   639C ONVOY, LLC - CT 920   2021-02-27   
475-270 6 Wallingford CT   639C ONVOY, LLC - CT 920   2021-02-27   
475-270 7 Wallingford CT   639C ONVOY, LLC - CT 920   2021-02-27   
475-270 8 Wallingford CT   639C ONVOY, LLC - CT 920   2021-06-03   
475-270 9 Wallingford CT   639C ONVOY, LLC - CT 920   2021-06-03   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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