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NPA: 203 [Rate centres in NPA 203] [Dial plan for NPA 203]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
203-286 4 Norwalk CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2007-06-20   
203-286 5 Norwalk CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2012-01-22   
203-286 6 Norwalk CT   612K CSC VOICE, LLC 920   2007-09-20   
203-286 7 Norwalk CT   612K CSC VOICE, LLC 920   2007-09-20   
203-286 8 Norwalk CT   612K CSC VOICE, LLC 920   2007-09-20   
203-286 9 Norwalk CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2007-10-08   
203-287 A New Haven CT HMDNCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-288 A New Haven CT HMDNCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-289 A Danbury CT HRFRCT0380Z  6630 SPOK, INC. 920      
203-290 A Bridgeport CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-290 0 Bridgeport CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2014-04-14   
203-290 1 Bridgeport CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2014-04-14   
203-290 2 Bridgeport CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2014-04-14   
203-290 3 Bridgeport CT SMFRCTDSDS0  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 NWHNCT02GT0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2014-04-16   
203-290 6 Bridgeport CT NRWLCT02XMD  4950 CABLEVISION LIGHTPATH, INC. - CT 920   2014-07-27   
203-290 7 Bridgeport CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2014-09-25   
203-290 8 Bridgeport CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2014-09-25   
203-290 9 Bridgeport CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2014-01-12   
203-291 A Westport CT WSPTCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-291 0 Westport CT WSPTCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-291 1 Westport CT WSPTCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-291 2 Westport CT WSPTCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-291 3 Westport CT WSPTCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-291 4 Westport CT WSPTCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-291 5 Westport CT WSPTCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-291 6 Westport CT WSPTCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-291 7 Westport CT WSPTCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-291 8 Westport CT WSPTCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-291 9 Westport CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2007-10-22   
203-292 A Fairfield CT NRWLCT02YMD  4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-292 0 Fairfield CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2008-11-29   
203-292 1 Fairfield CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2012-04-20   
203-292 2 Fairfield CT NRWLCT02YMD  4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-292 3 Fairfield CT   612K CSC VOICE, LLC 920      
203-292 4 Fairfield CT NRWLCT02YMD  4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-292 5 Fairfield CT   612K CSC VOICE, LLC 920      
203-292 6 Fairfield CT   612K CSC VOICE, LLC 920      
203-292 7 Fairfield CT NWHNCT02GT0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2006-07-07   
203-292 8 Fairfield CT   612K CSC VOICE, LLC 920      
203-292 9 Fairfield CT   612K CSC VOICE, LLC 920      
203-293 A Westport CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920      
203-293 0 Westport CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2015-05-11   
203-293 1 Westport CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920      
203-293 2 Westport CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2015-05-11   
203-293 3 Westport CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2011-01-24   
203-293 4 Westport CT   612K CSC VOICE, LLC 920   2007-12-07   
203-293 5 Westport CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2008-12-12   
203-293 6 Westport CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2010-02-28   

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Last updated: Sun, 17 May 2026 03:26:51 UTC

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