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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
203-614 A Stamford CT SMFRCT02DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-614 0 Stamford CT   829J PAETEC ITEL, LLC 920   2009-10-29   
203-614 1 Stamford CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2011-10-13   
203-614 2 Stamford CT SMFRCT02DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-614 3 Stamford CT SMFRCT02DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-614 4 Stamford CT SMFRCT02DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-614 5 Stamford CT SMFRCT02DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-614 6 Stamford CT SMFRCT02DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-614 7 Stamford CT SMFRCT02DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-614 8 Stamford CT   612K CSC VOICE, LLC 920   2011-08-26   
203-614 9 Stamford CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2011-05-27   
203-615 A Bridgeport CT BRPTCT01DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-615 0 Bridgeport CT BRPTCT01DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-615 1 Bridgeport CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
203-615 2 Bridgeport CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
203-615 3 Bridgeport CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
203-615 4 Bridgeport CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
203-615 5 Bridgeport CT BRPTCT01DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-615 6 Bridgeport CT BRPTCT01DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-615 7 Bridgeport CT BRPTCT01DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-615 8 Bridgeport CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2005-06-19   
203-615 9 Bridgeport CT BRPTCT01DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-616 A Danbury CT   4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-616 0 Danbury CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2005-11-03   
203-616 1 Danbury CT   829J PAETEC ITEL, LLC 920   2004-07-22   
203-616 2 Danbury CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-616 3 Danbury CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-616 4 Danbury CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-616 5 Danbury CT HRFRCTCR3MD  318J COMCAST IP PHONE, LLC 920   2007-08-06   
203-616 6 Danbury CT   829J PAETEC ITEL, LLC 920   2004-07-22   
203-616 7 Danbury CT   829J PAETEC ITEL, LLC 920   2004-07-22   
203-616 8 Danbury CT   829J PAETEC ITEL, LLC 920   2004-07-22   
203-616 9 Danbury CT   145J TERRA NOVA TELECOM INC. 920   2025-07-24   
203-617 A Danbury CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-617 0 Danbury CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2007-12-03   
203-617 1 Danbury CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2011-06-26   
203-617 2 Danbury CT HRFRCT0383Z  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920   2008-08-11   
203-617 3 Danbury CT HRFRCT0383Z  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920   2006-12-30   
203-617 4 Danbury CT   829J PAETEC ITEL, LLC 920   2008-09-10   
203-617 5 Danbury CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2007-09-13   
203-617 6 Danbury CT HRFRCT0383Z  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920   2006-12-30   
203-617 7 Danbury CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2007-09-13   
203-617 8 Danbury CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2011-05-19   
203-617 9 Danbury CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2006-10-27   
203-618 A Greenwich CT GNWCCTGNDS0  9104 VERIZON NEW YORK, INC. 132      
203-619 A New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-619 0 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-619 1 New Haven CT BLFDCTAP2MD  5562 METROPCS, INC. 920   2003-02-22   
203-619 2 New Haven CT BLFDCTAP2MD  5562 METROPCS, INC. 920   2003-02-22   
203-619 3 New Haven CT BLFDCTAP2MD  5562 METROPCS, INC. 920   2003-02-22   
203-619 4 New Haven CT BLFDCTAP2MD  5562 METROPCS, INC. 920   2003-02-22   
203-619 5 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-619 6 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-619 7 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-619 8 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-619 9 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-620 A Darien CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920      
203-620 0 Darien CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2004-10-01   
203-620 1 Darien CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2004-10-01   
203-620 2 Darien CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2004-10-01   
203-620 3 Darien CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2004-10-01   
203-620 4 Darien CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2004-10-01   
203-620 5 Darien CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2004-10-01   
203-620 6 Darien CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2004-10-01   
203-620 7 Darien CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2004-09-19   
203-620 8 Darien CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2004-09-19   
203-620 9 Darien CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2004-09-19   
203-621 A Darien CT   829J PAETEC ITEL, LLC 920      
203-621 0 Darien CT   829J PAETEC ITEL, LLC 920      
203-621 1 Darien CT   829J PAETEC ITEL, LLC 920      
203-621 2 Darien CT   829J PAETEC ITEL, LLC 920      
203-621 3 Darien CT   829J PAETEC ITEL, LLC 920      
203-621 4 Darien CT BLFDCTAP2MD  5562 METROPCS, INC. 920   2005-03-20   
203-621 5 Darien CT   829J PAETEC ITEL, LLC 920      
203-621 6 Darien CT   829J PAETEC ITEL, LLC 920      
203-621 7 Darien CT   829J PAETEC ITEL, LLC 920      
203-621 8 Darien CT BLFDCTAP2MD  5562 METROPCS, INC. 920   2005-02-03   
203-621 9 Darien CT   829J PAETEC ITEL, LLC 920      
203-622 A Greenwich CT GNWCCTGNDS0  9104 VERIZON NEW YORK, INC. 132      
203-623 A New Haven CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
203-624 A New Haven CT NWHNCT03DS3  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-625 A Greenwich CT GNWCCTGNDS0  9104 VERIZON NEW YORK, INC. 132      
203-625 0 Greenwich CT GNWCCTGNDS0  9104 VERIZON NEW YORK, INC. 132      
203-625 1 Greenwich CT NYCMNYBXDSL  639C ONVOY, LLC - CT 132   2015-05-09   
203-625 2 Greenwich CT GNWCCTGNDS0  9104 VERIZON NEW YORK, INC. 132      
203-625 3 Greenwich CT GNWCCTGNDS0  9104 VERIZON NEW YORK, INC. 132      
203-625 4 Greenwich CT GNWCCTGNDS0  9104 VERIZON NEW YORK, INC. 132      
203-625 5 Greenwich CT GNWCCTGNDS0  9104 VERIZON NEW YORK, INC. 132      
203-625 6 Greenwich CT GNWCCTGNDS0  9104 VERIZON NEW YORK, INC. 132      
203-625 7 Greenwich CT GNWCCTGNDS0  9104 VERIZON NEW YORK, INC. 132      
203-625 8 Greenwich CT GNWCCTGNDS0  9104 VERIZON NEW YORK, INC. 132      
203-625 9 Greenwich CT GNWCCTGNDS0  9104 VERIZON NEW YORK, INC. 132      
203-626 A Wallingford CT NWHNCT02X5X  7421 AT&T - LOCAL 920      
203-626 0 Wallingford CT   829J PAETEC ITEL, LLC 920   2001-06-04   
203-626 1 Wallingford CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2008-11-29   
203-626 2 Wallingford CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2010-02-28   
203-626 3 Wallingford CT NWHNCT02X5X  7421 AT&T - LOCAL 920      
203-626 4 Wallingford CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2018-10-19   
203-626 5 Wallingford CT HRFRCTCR3MD  318J COMCAST IP PHONE, LLC 920   2004-12-18   
203-626 6 Wallingford CT   829J PAETEC ITEL, LLC 920   2006-04-03   

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

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