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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
203-584 1 New Haven CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2010-09-09   
203-584 2 New Haven CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2010-10-02   
203-584 3 New Haven CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2010-11-08   
203-584 4 New Haven CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2010-10-26   
203-584 5 New Haven CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2010-10-26   
203-584 6 New Haven CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2010-10-26   
203-584 7 New Haven CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2010-12-04   
203-584 8 New Haven CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2010-12-04   
203-584 9 New Haven CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2010-12-09   
203-585 A Stamford CT SMFRCT01DS2  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-585 0 Stamford CT SMFRCT01DS2  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-585 1 Stamford CT SMFRCT01DS2  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-585 2 Stamford CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920      
203-585 3 Stamford CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2010-07-16   
203-585 4 Stamford CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2011-03-29   
203-585 5 Stamford CT SMFRCT01DS2  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-585 6 Stamford CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920      
203-585 7 Stamford CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2010-10-02   
203-585 8 Stamford CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2013-11-01   
203-585 9 Stamford CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2011-09-04   
203-586 A Woodbury CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-586 0 Woodbury CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2015-10-03   
203-586 1 Woodbury CT WLMNCT132MD  792K CHARTER IP ENABLED SERVICES, LLC 920   2013-05-26   
203-586 2 Woodbury CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-586 3 Woodbury CT   612K CSC VOICE, LLC 920   2003-12-15   
203-586 4 Woodbury CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2016-06-11   
203-586 5 Woodbury CT HRFRCT03GT0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2011-07-06   
203-586 6 Woodbury CT BLFDCTAP2MD  5562 METROPCS, INC. 920   2010-03-18   
203-586 7 Woodbury CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-586 8 Woodbury CT   6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2005-10-16   
203-586 9 Woodbury CT BLFDCTAP2MD  5562 METROPCS, INC. 920   2002-12-23   
203-587 A Georgetown CT   612K CSC VOICE, LLC 920      
203-587 0 Georgetown CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2010-03-21   
203-587 1 Georgetown CT   612K CSC VOICE, LLC 920      
203-587 2 Georgetown CT NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920   2021-11-08   
203-587 3 Georgetown CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2022-10-27   
203-587 4 Georgetown CT HRFRCT0380Z  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2013-05-03   
203-587 5 Georgetown CT NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920   2021-11-08   
203-587 6 Georgetown CT NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920   2021-11-08   
203-587 7 Georgetown CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2014-06-15   
203-587 8 Georgetown CT HRFRCT0380Z  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2013-05-03   
203-587 9 Georgetown CT   612K CSC VOICE, LLC 920      
203-588 A Stamford CT NRWLCT02YMD  4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-588 0 Stamford CT   4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-588 1 Stamford CT   4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-588 2 Stamford CT   4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-588 3 Stamford CT   4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-588 4 Stamford CT   4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-588 5 Stamford CT   4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-588 6 Stamford CT   4950 CABLEVISION LIGHTPATH, INC. - CT 920      

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

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