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: 501

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
475-501 A Georgetown CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-501 0 Georgetown CT   624H ONVOY SPECTRUM, LLC 920   2021-03-12   
475-501 1 Georgetown CT   639C ONVOY, LLC - CT 920   2020-08-10   
475-501 2 Georgetown CT   639C ONVOY, LLC - CT 920   2020-08-10   
475-501 3 Georgetown CT   639C ONVOY, LLC - CT 920   2021-03-04   
475-501 4 Georgetown CT   639C ONVOY, LLC - CT 920   2021-03-04   
475-501 6 Georgetown CT   5562 METROPCS, INC. 920   2021-12-31   
475-501 7 Georgetown CT   624H ONVOY SPECTRUM, LLC 920   2022-02-20   
475-501 8 Georgetown CT   624H ONVOY SPECTRUM, LLC 920   2022-02-20   
475-501 9 Georgetown CT   6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2023-11-10   

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

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