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: 290

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
203-290 A Bridgeport CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-290 0 Bridgeport CT   639C ONVOY, LLC - CT 920   2014-04-14   
203-290 1 Bridgeport CT   199F BANDWIDTH.COM CLEC, LLC - CT 920   2014-04-14   
203-290 2 Bridgeport CT   199F BANDWIDTH.COM CLEC, LLC - CT 920   2014-04-14   
203-290 3 Bridgeport CT   7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2014-03-26   
203-290 4 Bridgeport CT   612K CSC VOICE, LLC 920   2014-05-02   
203-290 5 Bridgeport CT   9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2014-04-16   
203-290 6 Bridgeport CT   4950 CABLEVISION LIGHTPATH, INC. - CT 920   2014-07-27   
203-290 7 Bridgeport CT   6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2014-09-25   
203-290 8 Bridgeport CT   6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2014-09-25   
203-290 9 Bridgeport CT   6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2014-01-12   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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