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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
203-405 6 Woodbury CT WLMNCT132MD  792K CHARTER IP ENABLED SERVICES, LLC 920   2010-08-05   
203-405 7 Woodbury CT   829J PAETEC ITEL, LLC 920   2012-05-20   
203-405 8 Woodbury CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2013-01-20   
203-405 9 Woodbury CT HRFRCT0380Z  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2013-05-04   
203-406 A Stamford CT SMFRCT01DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-406 0 Stamford CT SMFRCT01DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-406 1 Stamford CT SMFRCT01DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-406 2 Stamford CT SMFRCT01DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-406 3 Stamford CT SMFRCT01DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-406 4 Stamford CT SMFRCT01DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-406 5 Stamford CT SMFRCT01DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-406 6 Stamford CT SMFRCT01DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-406 7 Stamford CT   612K CSC VOICE, LLC 920   2010-07-23   
203-406 8 Stamford CT SMFRCT01DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-406 9 Stamford CT SMFRCT01DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-407 A New Haven CT HMDNCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-407 0 New Haven CT HMDNCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-407 1 New Haven CT HMDNCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-407 2 New Haven CT HMDNCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-407 3 New Haven CT HMDNCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-407 4 New Haven CT HMDNCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-407 5 New Haven CT HMDNCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-407 6 New Haven CT HMDNCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-407 7 New Haven CT HMDNCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-407 8 New Haven CT HMDNCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-407 9 New Haven CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2005-11-07   
203-408 A Redding CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920      
203-408 0 Redding CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2011-11-25   
203-408 1 Redding CT HRFRCT0380Z  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2013-05-03   
203-408 2 Redding CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2014-02-14   
203-408 3 Redding CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2015-05-25   
203-408 4 Redding CT   515J IP HORIZON LLC 920   2022-08-15   
203-408 5 Redding CT NWHNCT02GT0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2011-07-06   
203-408 6 Redding CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2016-03-15   
203-408 7 Redding CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2016-05-04   
203-408 8 Redding CT HRFRCT0380Z  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2013-05-03   
203-408 9 Redding CT HRFRCT0380Z  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2016-12-08   
203-409 A Old Greenwich CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-409 0 Old Greenwich CT   829J PAETEC ITEL, LLC 920   2005-11-25   
203-409 1 Old Greenwich CT HRFRCT0380Z  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2012-10-22   
203-409 2 Old Greenwich CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2015-05-24   
203-409 3 Old Greenwich CT   829J PAETEC ITEL, LLC 920   2001-09-03   
203-409 4 Old Greenwich CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-409 5 Old Greenwich CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2014-02-10   
203-409 6 Old Greenwich CT   829J PAETEC ITEL, LLC 920   2004-06-18   
203-409 7 Old Greenwich CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2003-09-07   
203-409 8 Old Greenwich CT HRFRCT0380Z  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2012-10-22   
203-410 A New Haven CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2024-02-09   
203-410 0 New Haven CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-410 1 New Haven CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-410 2 New Haven CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-410 3 New Haven CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-410 4 New Haven CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-410 5 New Haven CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-410 6 New Haven CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-410 7 New Haven CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-410 8 New Haven CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-410 9 New Haven CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-412 A New Haven CT HRFRCT0379Z  9748 AMERICAN MESSAGING SERVICES, LLC 920      
203-413 A Greenwich CT   829J PAETEC ITEL, LLC 132      
203-414 A Bridgeport CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920      
203-415 A New Haven CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920      
203-416 A Bridgeport CT BRPTCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-416 0 Bridgeport CT BRPTCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-416 1 Bridgeport CT   829J PAETEC ITEL, LLC 920   2004-06-06   
203-416 2 Bridgeport CT NRWLCT02YMD  4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-416 3 Bridgeport CT BRPTCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-416 4 Bridgeport CT BRPTCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-416 5 Bridgeport CT   829J PAETEC ITEL, LLC 920   2004-02-25   
203-416 6 Bridgeport CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2008-01-31   
203-416 7 Bridgeport CT BRPTCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-416 8 Bridgeport CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2002-10-07   
203-416 9 Bridgeport CT BRPTCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-417 A Danbury CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920      
203-418 A Fairfield CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-418 0 Fairfield CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2010-03-21   
203-418 1 Fairfield CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2011-12-19   
203-418 2 Fairfield CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-418 3 Fairfield CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2004-08-02   
203-418 4 Fairfield CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2004-03-08   
203-418 5 Fairfield CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2003-12-21   
203-418 6 Fairfield CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2003-12-21   
203-418 7 Fairfield CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2010-08-14   
203-418 8 Fairfield CT   145J TERRA NOVA TELECOM INC. 920   2022-04-17   
203-418 9 Fairfield CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-419 A Waterbury CT WTRBCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-419 0 Waterbury CT WTRBCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-419 1 Waterbury CT WTRBCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-419 2 Waterbury CT WTRBCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-419 3 Waterbury CT WTRBCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-419 4 Waterbury CT WTRBCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-419 5 Waterbury CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2009-10-19   
203-419 6 Waterbury CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2008-06-21   
203-419 7 Waterbury CT BLFDCTAP2MD  5562 METROPCS, INC. 920   2005-12-31   
203-419 8 Waterbury CT BLFDCTAP2MD  5562 METROPCS, INC. 920   2005-12-31   
203-419 9 Waterbury CT WTRBCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-420 A Meriden CT MRDNCT04RS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-421 A Madison CT MDSNCT02RS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-421 0 Madison CT MDSNCT02RS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-421 1 Madison CT MDSNCT02RS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      

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Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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