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: 283

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
203-283 A Milford CT NRWLCT02YMD  4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-283 0 Milford CT   4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-283 1 Milford CT   612K CSC VOICE, LLC 920      
203-283 2 Milford CT   4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-283 3 Milford CT   4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-283 4 Milford CT   612K CSC VOICE, LLC 920      
203-283 5 Milford CT   612K CSC VOICE, LLC 920      
203-283 6 Milford CT   639C ONVOY, LLC - CT 920   2021-07-03   
203-283 7 Milford CT   612K CSC VOICE, LLC 920      
203-283 8 Milford CT   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 920   2003-06-18   
203-283 9 Milford CT   4950 CABLEVISION LIGHTPATH, INC. - CT 920      

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

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