Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 203 [Rate centres in NPA 203] [Dial plan for NPA 203]

NXX: 664

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
203-664 A Redding CT NRWLCT02XMD  4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-664 1 Redding CT   612K CSC VOICE, LLC 920      
203-664 2 Redding CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2021-08-19   
203-664 3 Redding CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2021-08-19   
203-664 4 Redding CT   612K CSC VOICE, LLC 920   2013-06-08   
203-664 5 Redding CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2015-05-15   
203-664 6 Redding CT NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920   2021-11-08   
203-664 7 Redding CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2014-07-06   
203-664 8 Redding CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2016-07-16   

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

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