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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
203-654 0 New Haven CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2006-03-07   
203-654 1 New Haven CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2003-04-05   
203-654 2 New Haven CT   829J PAETEC ITEL, LLC 920   2007-12-04   
203-654 3 New Haven CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2014-01-03   
203-654 4 New Haven CT NHVNCT00RS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-654 5 New Haven CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2005-07-07   
203-654 6 New Haven CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2004-03-17   
203-654 7 New Haven CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2004-09-03   
203-654 8 New Haven CT NHVNCT00RS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-654 9 New Haven CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2010-04-01   
203-655 A Darien CT DARNCT00RS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-656 A Darien CT DARNCT00RS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-657 A New Haven CT HRFRCT0379Z  9748 AMERICAN MESSAGING SERVICES, LLC 920      
203-658 A Stamford CT SMFRCTCTDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-658 0 Stamford CT SMFRCTCTDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-658 1 Stamford CT SMFRCTCTDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-658 2 Stamford CT NRWLCT02XMD  4950 CABLEVISION LIGHTPATH, INC. - CT 920   2011-10-21   
203-658 3 Stamford CT HRFRCT0377Z  350E YMAX COMMUNICATIONS CORP. - CT 920   2011-10-12   
203-658 4 Stamford CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2011-09-22   
203-658 5 Stamford CT HRFRCT0377Z  350E YMAX COMMUNICATIONS CORP. - CT 920   2011-10-12   
203-658 6 Stamford CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2012-04-20   
203-658 7 Stamford CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2012-08-11   
203-658 8 Stamford CT   612K CSC VOICE, LLC 920   2012-08-18   
203-658 9 Stamford CT SMFRCTCTDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-659 A Fairfield CT   829J PAETEC ITEL, LLC 920      
203-659 0 Fairfield CT   829J PAETEC ITEL, LLC 920      
203-659 1 Fairfield CT   829J PAETEC ITEL, LLC 920      
203-659 2 Fairfield CT   829J PAETEC ITEL, LLC 920      
203-659 3 Fairfield CT   829J PAETEC ITEL, LLC 920      
203-659 4 Fairfield CT   829J PAETEC ITEL, LLC 920      
203-659 5 Fairfield CT   829J PAETEC ITEL, LLC 920      
203-659 6 Fairfield CT   829J PAETEC ITEL, LLC 920      
203-659 7 Fairfield CT   829J PAETEC ITEL, LLC 920      
203-659 8 Fairfield CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2011-06-23   
203-659 9 Fairfield CT   829J PAETEC ITEL, LLC 920      
203-660 A Byram CT   639C ONVOY, LLC - CT 132      
203-660 0 Byram CT WHPLNYWPXOY  199F BANDWIDTH.COM CLEC, LLC - CT 132   2010-08-07   
203-660 1 Byram CT NYCMNY83D1S  350E YMAX COMMUNICATIONS CORP. - CT 132   2008-06-01   
203-660 2 Byram CT   145J TERRA NOVA TELECOM INC. 132   2022-04-17   
203-660 3 Byram CT NYCMNYBXDSL  639C ONVOY, LLC - CT 132   2021-03-04   
203-660 4 Byram CT NYCMNY37TMD  624H ONVOY SPECTRUM, LLC 132   2024-10-22   
203-660 5 Byram CT NYCMNY37TMD  624H ONVOY SPECTRUM, LLC 132   2024-10-22   
203-660 6 Byram CT WHPLNYYFDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 132   2003-06-08   
203-660 7 Byram CT NYCMNY83D1S  350E YMAX COMMUNICATIONS CORP. - CT 132   2008-04-21   
203-660 8 Byram CT NYCMNY83D1S  350E YMAX COMMUNICATIONS CORP. - CT 132   2008-06-01   
203-660 9 Byram CT   624H ONVOY SPECTRUM, LLC 132   2025-10-04   
203-661 A Greenwich CT GNWCCTGNDS0  9104 VERIZON NEW YORK, INC. 132      
203-662 A Darien CT DARNCT00RS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-663 A Norwalk CT   829J PAETEC ITEL, LLC 920      
203-663 0 Norwalk CT   829J PAETEC ITEL, LLC 920      
203-663 1 Norwalk CT   829J PAETEC ITEL, LLC 920      
203-663 2 Norwalk CT   829J PAETEC ITEL, LLC 920      
203-663 3 Norwalk CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2011-10-13   
203-663 4 Norwalk CT   829J PAETEC ITEL, LLC 920      
203-663 5 Norwalk CT   829J PAETEC ITEL, LLC 920      
203-663 6 Norwalk CT   829J PAETEC ITEL, LLC 920      
203-663 7 Norwalk CT   829J PAETEC ITEL, LLC 920      
203-663 8 Norwalk CT   829J PAETEC ITEL, LLC 920      
203-663 9 Norwalk CT   829J PAETEC ITEL, LLC 920      
203-664 A Redding CT NRWLCT02XMD  4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-664 1 Redding CT   612K CSC VOICE, LLC 920      
203-664 2 Redding CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2021-08-19   
203-664 3 Redding CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2021-08-19   
203-664 4 Redding CT   612K CSC VOICE, LLC 920   2013-06-08   
203-664 5 Redding CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2015-05-15   
203-664 6 Redding CT NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920   2021-11-08   
203-664 7 Redding CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2014-07-06   
203-664 8 Redding CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2016-07-16   
203-665 A Wilton CT   829J PAETEC ITEL, LLC 920      
203-665 0 Wilton CT   829J PAETEC ITEL, LLC 920      
203-665 1 Wilton CT   829J PAETEC ITEL, LLC 920      
203-665 2 Wilton CT   829J PAETEC ITEL, LLC 920      
203-665 3 Wilton CT   829J PAETEC ITEL, LLC 920      
203-665 4 Wilton CT   829J PAETEC ITEL, LLC 920   2006-07-14   
203-665 5 Wilton CT   829J PAETEC ITEL, LLC 920      
203-665 6 Wilton CT   829J PAETEC ITEL, LLC 920      
203-665 7 Wilton CT   829J PAETEC ITEL, LLC 920      
203-665 8 Wilton CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2008-11-29   
203-665 9 Wilton CT   829J PAETEC ITEL, LLC 920      
203-666 A Bridgeport CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-666 0 Bridgeport CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2013-12-09   
203-666 1 Bridgeport CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2013-12-09   
203-666 2 Bridgeport CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2014-09-08   
203-666 3 Bridgeport CT SMFRCTCTDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920   2013-11-29   
203-666 4 Bridgeport CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2013-11-17   
203-666 5 Bridgeport CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2014-09-08   
203-666 6 Bridgeport CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2014-04-01   
203-666 7 Bridgeport CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2014-04-01   
203-666 8 Bridgeport CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2014-09-08   
203-666 9 Bridgeport CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2014-04-01   
203-667 A Stamford CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-667 0 Stamford CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-667 1 Stamford CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-667 2 Stamford CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-667 3 Stamford CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-667 4 Stamford CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-667 5 Stamford CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-667 6 Stamford CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-667 7 Stamford CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-667 8 Stamford CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      

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Last updated: Mon, 15 Sep 2025 02:24:40 UTC

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