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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
203-200 A New Haven CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920      
203-200 0 New Haven CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2008-10-22   
203-200 1 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2009-06-02   
203-200 2 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2009-06-02   
203-200 3 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2009-06-02   
203-200 4 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2009-06-02   
203-200 5 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2009-06-02   
203-200 6 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2009-06-02   
203-200 7 New Haven CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2009-07-14   
203-200 8 New Haven CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2010-02-08   
203-200 9 New Haven CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2010-02-08   
203-201 A New Haven CT HRFRCT0380Z  6630 USA MOBILITY WIRELESS, INC. 920      
203-202 A Darien CT NRWLCT02YMD  4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-202 0 Darien CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2024-03-03   
203-202 1 Darien CT NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920   2021-11-08   
203-202 2 Darien CT NRWLCTCVDS0  4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-202 3 Darien CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2005-12-19   
203-202 4 Darien CT BLFDCTAP2MD  5562 METROPCS, INC. 920   2007-07-13   
203-202 5 Darien CT NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920   2021-11-08   
203-202 6 Darien CT NRWLCTCVDS0  4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-202 7 Darien CT   612K CSC VOICE, LLC 920      
203-202 8 Darien CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2003-07-20   
203-202 9 Darien CT   612K CSC VOICE, LLC 920      
203-203 A Greenwich CT NYCMNYBXDSL  639C ONVOY, LLC - CT 132   2024-11-21   
203-203 0 Greenwich CT NYCMNYBXDSL  639C ONVOY, LLC - CT 132   2024-11-21   
203-203 1 Greenwich CT NYCMNYBXDSL  639C ONVOY, LLC - CT 132   2024-11-21   
203-203 2 Greenwich CT NYCMNYBXDSL  639C ONVOY, LLC - CT 132   2024-11-21   
203-203 3 Greenwich CT NYCMNYBXDSL  639C ONVOY, LLC - CT 132   2024-11-21   
203-203 4 Greenwich CT NYCMNYBXDSL  639C ONVOY, LLC - CT 132   2024-11-21   
203-203 5 Greenwich CT NYCMNYBXDSL  639C ONVOY, LLC - CT 132   2024-11-21   
203-203 6 Greenwich CT NYCMNYBXDSL  639C ONVOY, LLC - CT 132   2024-11-21   
203-203 7 Greenwich CT NYCMNYBXDSL  639C ONVOY, LLC - CT 132   2024-11-21   
203-203 8 Greenwich CT NYCMNYBXDSL  639C ONVOY, LLC - CT 132   2024-11-21   
203-203 9 Greenwich CT NYCMNYBXDSL  639C ONVOY, LLC - CT 132   2024-11-21   
203-204 A Guilford CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-204 0 Guilford CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-204 1 Guilford CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2005-09-01   
203-204 2 Guilford CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2005-09-01   
203-204 3 Guilford CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2010-09-09   
203-204 4 Guilford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2019-02-18   
203-204 5 Guilford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2019-02-18   
203-204 6 Guilford CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2008-05-19   
203-204 7 Guilford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2019-02-18   
203-204 8 Guilford CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2012-05-19   
203-204 9 Guilford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2019-02-18   
203-205 A Danbury CT DNBRCT00DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-205 0 Danbury CT DNBRCT00DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-205 1 Danbury CT DNBRCT00DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-205 2 Danbury CT DNBRCT00DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-205 3 Danbury CT DNBRCT00DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-205 4 Danbury CT DNBRCT00DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-205 5 Danbury CT DNBRCT00DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-205 6 Danbury CT DNBRCT00DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-205 7 Danbury CT DNBRCT00DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-205 8 Danbury CT DNBRCT00DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-205 9 Danbury CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2006-02-06   
203-206 A Waterbury CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920      
203-207 A Danbury CT DNBRCT00DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-207 0 Danbury CT DNBRCT00DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-207 1 Danbury CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2007-10-22   
203-207 2 Danbury CT DNBRCT00DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-207 3 Danbury CT DNBRCT00DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-207 4 Danbury CT DNBRCT00DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-207 5 Danbury CT DNBRCT00DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-207 6 Danbury CT   7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920      
203-207 7 Danbury CT DNBRCT00DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-207 8 Danbury CT DNBRCT00DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-207 9 Danbury CT DNBRCT00DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-208 A Branford CT HRFRCTCR3MD  318J COMCAST IP PHONE, LLC 920      
203-208 0 Branford CT HRFRCTCR3MD  318J COMCAST IP PHONE, LLC 920      
203-208 1 Branford CT HRFRCTCR3MD  318J COMCAST IP PHONE, LLC 920      
203-208 2 Branford CT HRFRCTCR3MD  318J COMCAST IP PHONE, LLC 920   2009-10-19   
203-208 3 Branford CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2005-10-28   
203-208 4 Branford CT HRFRCTCR3MD  318J COMCAST IP PHONE, LLC 920   2009-10-29   
203-208 5 Branford CT NWHNCT02GT0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2006-07-07   
203-208 6 Branford CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2010-02-28   
203-208 7 Branford CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2013-06-23   
203-208 8 Branford CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2010-09-09   
203-208 9 Branford CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2008-11-29   
203-209 A Bridgeport CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
203-210 A Wilton CT NRWLCT02YMD  4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-210 0 Wilton CT NRWLCTCVDS0  4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-210 1 Wilton CT NRWLCTCVDS0  4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-210 2 Wilton CT NRWLCTCVDS0  4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-210 3 Wilton CT NRWLCTCVDS0  4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-210 4 Wilton CT NRWLCTCVDS0  4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-210 5 Wilton CT   612K CSC VOICE, LLC 920      
203-210 6 Wilton CT NRWLCTCVDS0  4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-210 7 Wilton CT   612K CSC VOICE, LLC 920      
203-210 8 Wilton CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2012-06-21   
203-210 9 Wilton CT NRWLCTCVDS0  4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-212 A Bridgeport CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920      
203-212 0 Bridgeport CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2010-10-22   
203-212 1 Bridgeport CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2010-10-22   
203-212 2 Bridgeport CT BLFDCTAP2MD  5562 METROPCS, INC. 920   2010-06-20   
203-212 3 Bridgeport CT   612K CSC VOICE, LLC 920   2010-07-23   
203-212 4 Bridgeport CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2010-10-22   
203-212 5 Bridgeport CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2011-03-09   
203-212 6 Bridgeport CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2011-03-09   
203-212 7 Bridgeport CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2009-10-30   

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

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