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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
203-601 1 Trumbull CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-601 2 Trumbull CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2010-08-09   
203-601 3 Trumbull CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-601 4 Trumbull CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-601 5 Trumbull CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-601 6 Trumbull CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2016-01-07   
203-601 7 Trumbull CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2015-05-09   
203-601 8 Trumbull CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-601 9 Trumbull CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-602 A Stamford CT SMFRCT01DS2  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-602 0 Stamford CT SMFRCT01DS2  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-602 1 Stamford CT SMFRCT01DS2  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-602 2 Stamford CT SMFRCT01DS2  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-602 3 Stamford CT SMFRCT01DS2  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-602 4 Stamford CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2015-02-01   
203-602 5 Stamford CT SMFRCT01DS2  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-602 6 Stamford CT SMFRCT01DS2  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-602 7 Stamford CT SMFRCT01DS2  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-602 8 Stamford CT SMFRCT01DS2  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-602 9 Stamford CT SMFRCT01DS2  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-603 A New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-604 A Norwalk CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-604 0 Norwalk CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2005-03-12   
203-604 1 Norwalk CT   829J PAETEC ITEL, LLC 920   2003-12-06   
203-604 2 Norwalk CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2004-09-11   
203-604 3 Norwalk CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2014-05-17   
203-604 4 Norwalk CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2010-06-16   
203-604 5 Norwalk CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2011-02-03   
203-604 6 Norwalk CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2005-11-03   
203-604 7 Norwalk CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2011-08-18   
203-604 8 Norwalk CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2002-07-16   
203-604 9 Norwalk CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2005-06-04   
203-605 A New Haven CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
203-606 A New Haven CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-607 A Stamford CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920      
203-607 0 Stamford CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2003-03-22   
203-607 1 Stamford CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2003-03-22   
203-607 2 Stamford CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2003-03-22   
203-607 3 Stamford CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2003-03-22   
203-607 4 Stamford CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2003-03-22   
203-607 5 Stamford CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2003-03-22   
203-607 6 Stamford CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2003-03-22   
203-607 7 Stamford CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2003-03-22   
203-607 8 Stamford CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2003-03-22   
203-607 9 Stamford CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2003-03-22   
203-608 A Meriden CT   829J PAETEC ITEL, LLC 920      
203-608 0 Meriden CT   829J PAETEC ITEL, LLC 920      
203-608 1 Meriden CT   829J PAETEC ITEL, LLC 920      
203-608 2 Meriden CT   829J PAETEC ITEL, LLC 920      
203-608 3 Meriden CT   829J PAETEC ITEL, LLC 920      
203-608 4 Meriden CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2012-11-26   
203-608 5 Meriden CT   829J PAETEC ITEL, LLC 920      
203-608 6 Meriden CT   829J PAETEC ITEL, LLC 920      
203-608 7 Meriden CT   829J PAETEC ITEL, LLC 920      
203-608 8 Meriden CT   829J PAETEC ITEL, LLC 920      
203-608 9 Meriden CT   829J PAETEC ITEL, LLC 920      
203-609 A Stamford CT SMFRCT02DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-609 0 Stamford CT SMFRCT02DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-609 1 Stamford CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
203-609 2 Stamford CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2014-04-01   
203-609 3 Stamford CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2011-06-17   
203-609 4 Stamford CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2011-06-17   
203-609 5 Stamford CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2011-06-17   
203-609 6 Stamford CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2014-04-01   
203-609 7 Stamford CT SMFRCT02DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-609 8 Stamford CT SMFRCT02DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-609 9 Stamford CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2014-04-01   
203-610 A Bridgeport CT   829J PAETEC ITEL, LLC 920      
203-610 0 Bridgeport CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2003-05-13   
203-610 1 Bridgeport CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2003-05-13   
203-610 2 Bridgeport CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2003-05-13   
203-610 3 Bridgeport CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2003-06-04   
203-610 4 Bridgeport CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2003-08-09   
203-610 5 Bridgeport CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2003-09-03   
203-610 6 Bridgeport CT   829J PAETEC ITEL, LLC 920      
203-610 7 Bridgeport CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2003-09-03   
203-610 8 Bridgeport CT   829J PAETEC ITEL, LLC 920   2005-02-12   
203-610 9 Bridgeport CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2006-09-18   
203-612 A Bridgeport CT   4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-612 0 Bridgeport CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2005-06-19   
203-612 1 Bridgeport CT   612K CSC VOICE, LLC 920   2005-03-10   
203-612 2 Bridgeport CT   4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-612 3 Bridgeport CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-612 4 Bridgeport CT   612K CSC VOICE, LLC 920   2006-01-22   
203-612 5 Bridgeport CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2007-07-17   
203-612 6 Bridgeport CT   612K CSC VOICE, LLC 920   2004-11-06   
203-612 7 Bridgeport CT   612K CSC VOICE, LLC 920   2004-11-06   
203-612 8 Bridgeport CT   612K CSC VOICE, LLC 920   2004-11-06   
203-612 9 Bridgeport CT   4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-613 A Norwalk CT BLFDCTAP2MD  5562 METROPCS, INC. 920   2024-02-09   
203-613 0 Norwalk CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2014-06-13   
203-613 1 Norwalk CT BLFDCTAP2MD  5562 METROPCS, INC. 920      
203-613 2 Norwalk CT BLFDCTAP2MD  5562 METROPCS, INC. 920      
203-613 3 Norwalk CT BLFDCTAP2MD  5562 METROPCS, INC. 920      
203-613 4 Norwalk CT BLFDCTAP2MD  5562 METROPCS, INC. 920      
203-613 5 Norwalk CT BLFDCTAP2MD  5562 METROPCS, INC. 920      
203-613 6 Norwalk CT BLFDCTAP2MD  5562 METROPCS, INC. 920      
203-613 7 Norwalk CT BLFDCTAP2MD  5562 METROPCS, INC. 920      
203-613 8 Norwalk CT BLFDCTAP2MD  5562 METROPCS, INC. 920      
203-613 9 Norwalk CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      

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

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