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: 338

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
475-338 A Branford CT HRFRCTCR3MD  318J COMCAST IP PHONE, LLC 920      
475-338 0 Branford CT   639C ONVOY, LLC - CT 920   2018-04-06   
475-338 1 Branford CT   318J COMCAST IP PHONE, LLC 920   2017-11-12   
475-338 2 Branford CT   539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2019-08-29   
475-338 3 Branford CT   639C ONVOY, LLC - CT 920   2020-07-05   
475-338 4 Branford CT   639C ONVOY, LLC - CT 920   2021-03-04   
475-338 5 Branford CT   639C ONVOY, LLC - CT 920   2021-03-04   
475-338 6 Branford CT   199F BANDWIDTH.COM CLEC, LLC - CT 920   2019-11-15   
475-338 7 Branford CT   639C ONVOY, LLC - CT 920   2019-03-29   
475-338 8 Branford CT   639C ONVOY, LLC - CT 920   2018-01-04   
475-338 9 Branford CT   639C ONVOY, LLC - CT 920   2019-03-29   

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

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