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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
203-712 5 Huntington CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-712 6 Huntington CT HRFRCTASDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 920   2006-02-01   
203-712 7 Huntington CT HRFRCTCR3MD  318J COMCAST IP PHONE, LLC 920   2015-01-12   
203-712 8 Huntington CT HRFRCTASDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 920   2006-03-27   
203-712 9 Huntington CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-713 A Milford CT   639C ONVOY, LLC - CT 920      
203-713 0 Milford CT   515J IP HORIZON LLC 920   2022-08-04   
203-713 1 Milford CT   829J PAETEC ITEL, LLC 920   2004-06-12   
203-713 2 Milford CT   145J TERRA NOVA TELECOM INC. 920   2025-07-24   
203-713 3 Milford CT   145J TERRA NOVA TELECOM INC. 920   2020-12-12   
203-713 4 Milford CT HRFRCT03XMX  145J TERRA NOVA TELECOM INC. 920   2024-08-23   
203-713 5 Milford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2020-11-22   
203-713 6 Milford CT NWHNCT02GT0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2006-07-07   
203-713 7 Milford CT   829J PAETEC ITEL, LLC 920   2009-04-14   
203-713 8 Milford CT   612K CSC VOICE, LLC 920   2010-06-25   
203-713 9 Milford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2021-06-03   
203-714 A Naugatuck CT   624H ONVOY SPECTRUM, LLC 920      
203-714 0 Naugatuck CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2011-05-27   
203-714 1 Naugatuck CT   829J PAETEC ITEL, LLC 920   2005-04-18   
203-714 2 Naugatuck CT NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920   2021-11-08   
203-714 4 Naugatuck CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2021-10-28   
203-714 5 Naugatuck CT NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920   2024-10-22   
203-714 6 Naugatuck CT HRFRCTCR3MD  318J COMCAST IP PHONE, LLC 920   2011-09-25   
203-714 7 Naugatuck CT HRFRCT03GT0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2007-09-07   
203-714 8 Naugatuck CT   829J PAETEC ITEL, LLC 920   2009-07-29   
203-714 9 Naugatuck CT   145J TERRA NOVA TELECOM INC. 920   2025-05-05   
203-715 A Meriden CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-715 0 Meriden CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-715 1 Meriden CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-715 2 Meriden CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-715 3 Meriden CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-715 4 Meriden CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-715 5 Meriden CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-715 6 Meriden CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-715 7 Meriden CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-715 8 Meriden CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2007-02-08   
203-715 9 Meriden CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-716 A New Canaan CT   4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2025-04-26   
203-716 0 New Canaan CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2003-09-30   
203-716 1 New Canaan CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2008-11-29   
203-716 3 New Canaan CT NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920   2021-11-08   
203-716 4 New Canaan CT NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920   2024-10-22   
203-716 5 New Canaan CT NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920   2021-02-24   
203-716 6 New Canaan CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2003-08-25   
203-716 7 New Canaan CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2003-09-30   
203-716 8 New Canaan CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2002-10-07   
203-717 A Greenwich CT   612K CSC VOICE, LLC 132      
203-717 0 Greenwich CT NYCMNYZRDBS  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 132   2012-09-15   
203-717 1 Greenwich CT   612K CSC VOICE, LLC 132   2011-03-28   
203-717 2 Greenwich CT NYCMNY83D1S  350E YMAX COMMUNICATIONS CORP. - CT 132   2011-07-11   
203-717 3 Greenwich CT NYCMNY83D1S  350E YMAX COMMUNICATIONS CORP. - CT 132   2011-07-11   
203-717 4 Greenwich CT NYCMNYBXDSL  639C ONVOY, LLC - CT 132   2016-10-31   
203-717 5 Greenwich CT NYCMNYBXDSL  639C ONVOY, LLC - CT 132   2018-04-02   
203-717 6 Greenwich CT   829J PAETEC ITEL, LLC 132   2012-09-03   
203-717 7 Greenwich CT NYCMNYBXDSL  639C ONVOY, LLC - CT 132   2013-11-03   
203-717 8 Greenwich CT NYCMNY83D1S  350E YMAX COMMUNICATIONS CORP. - CT 132   2011-04-28   
203-717 9 Greenwich CT NYCMNYBXDSL  639C ONVOY, LLC - CT 132   2018-03-08   
203-718 A Cheshire CT   4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2025-04-26   
203-718 0 Cheshire CT HRFRCT0380Z  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2013-05-03   
203-718 1 Cheshire CT   829J PAETEC ITEL, LLC 920   2004-06-06   
203-718 2 Cheshire CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-718 3 Cheshire CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2020-11-22   
203-718 4 Cheshire CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-718 5 Cheshire CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2020-11-22   
203-718 6 Cheshire CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2015-05-10   
203-718 7 Cheshire CT NWLNCTCS6MD  508J CENTURYLINK COMMUNICATIONS, LLC 920   2014-09-29   
203-718 8 Cheshire CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2011-05-27   
203-718 9 Cheshire CT   145J TERRA NOVA TELECOM INC. 920   2025-04-28   
203-719 A Stamford CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920      
203-720 A Naugatuck CT NGTCCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-720 0 Naugatuck CT NGTCCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-720 1 Naugatuck CT NGTCCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-720 2 Naugatuck CT NGTCCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-720 3 Naugatuck CT NGTCCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-720 4 Naugatuck CT NGTCCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-720 5 Naugatuck CT NGTCCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-720 6 Naugatuck CT HRFRCT03HMD  073H TELNYX LLC 920   2018-05-02   
203-720 7 Naugatuck CT NGTCCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-720 8 Naugatuck CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2012-04-07   
203-720 9 Naugatuck CT NGTCCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-721 A Waterbury CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
203-721 0 Waterbury CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2009-10-04   
203-721 1 Waterbury CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2005-02-28   
203-721 2 Waterbury CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2008-08-18   
203-721 3 Waterbury CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2011-01-13   
203-721 4 Waterbury CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2008-10-30   
203-721 5 Waterbury CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2008-10-30   
203-721 6 Waterbury CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2008-12-10   
203-721 7 Waterbury CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2010-07-03   
203-721 8 Waterbury CT HRFRCTASDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 920   2008-08-01   
203-721 9 Waterbury CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2022-08-22   
203-722 A Norwalk CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920      
203-723 A Naugatuck CT NGTCCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-723 0 Naugatuck CT NGTCCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-723 1 Naugatuck CT NGTCCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-723 2 Naugatuck CT NGTCCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-723 3 Naugatuck CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2012-09-28   
203-723 4 Naugatuck CT NGTCCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-723 5 Naugatuck CT NGTCCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-723 6 Naugatuck CT NGTCCT00DS0  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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