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: 750

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
475-750 A Danbury CT HRFRCT0344Z  866H BARR TEL USA, INC. - CT 920      
475-750 0 Danbury CT   6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2023-02-05   
475-750 1 Danbury CT   866H BARR TEL USA, INC. - CT 920   2022-04-23   
475-750 2 Danbury CT   639C ONVOY, LLC - CT 920   2022-12-30   
475-750 3 Danbury CT   639C ONVOY, LLC - CT 920   2022-12-30   
475-750 4 Danbury CT   639C ONVOY, LLC - CT 920   2022-12-30   
475-750 5 Danbury CT   639C ONVOY, LLC - CT 920   2022-12-30   
475-750 6 Danbury CT   639C ONVOY, LLC - CT 920   2024-02-04   
475-750 7 Danbury CT   639C ONVOY, LLC - CT 920   2023-08-11   
475-750 8 Danbury CT   639C ONVOY, LLC - CT 920   2023-08-11   
475-750 9 Danbury CT   639C ONVOY, LLC - CT 920   2023-08-11   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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