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]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
475-999 5 Fairfield CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2014-06-23   
475-999 6 Fairfield CT   829J PAETEC ITEL, LLC 920   2013-04-06   
475-999 7 Fairfield CT NWLNCTCS6MD  508J CENTURYLINK COMMUNICATIONS, LLC 920   2014-07-16   
475-999 8 Fairfield CT   612K CSC VOICE, LLC 920   2013-07-06   
475-999 9 Fairfield CT HRFRCT0380Z  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2013-04-01   

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Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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