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: 202

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
203-202 A Darien CT NRWLCT02YMD  4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-202 0 Darien CT   639C ONVOY, LLC - CT 920   2024-03-03   
203-202 1 Darien CT   624H ONVOY SPECTRUM, LLC 920   2021-11-08   
203-202 2 Darien CT   4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-202 3 Darien CT   4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2005-12-19   
203-202 4 Darien CT   5562 METROPCS, INC. 920   2007-07-13   
203-202 5 Darien CT   624H ONVOY SPECTRUM, LLC 920   2021-11-08   
203-202 6 Darien CT   4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-202 7 Darien CT   612K CSC VOICE, LLC 920      
203-202 8 Darien CT   7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2003-07-20   
203-202 9 Darien CT   612K CSC VOICE, LLC 920      

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

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