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: 330

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
475-330 A Fairfield CT   612K CSC VOICE, LLC 920      
475-330 0 Fairfield CT   6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2016-02-06   
475-330 1 Fairfield CT   612K CSC VOICE, LLC 920   2015-08-01   
475-330 2 Fairfield CT   639C ONVOY, LLC - CT 920   2020-07-05   
475-330 3 Fairfield CT   639C ONVOY, LLC - CT 920   2020-07-05   
475-330 4 Fairfield CT   6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2020-08-22   
475-330 5 Fairfield CT   639C ONVOY, LLC - CT 920   2021-08-01   
475-330 6 Fairfield CT   7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920   2019-03-25   
475-330 7 Fairfield CT   639C ONVOY, LLC - CT 920   2021-08-01   
475-330 8 Fairfield CT   6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2017-03-04   
475-330 9 Fairfield CT   073H TELNYX LLC 920   2017-04-06   

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

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