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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
203-695 3 Waterbury CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
203-695 4 Waterbury CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2007-01-04   
203-695 5 Waterbury CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2007-08-02   
203-695 6 Waterbury CT BLFDCTAP2MD  5562 METROPCS, INC. 920   2011-01-13   
203-695 7 Waterbury CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2009-05-07   
203-695 8 Waterbury CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2008-01-29   
203-695 9 Waterbury CT BLFDCTAP2MD  5562 METROPCS, INC. 920   2011-01-13   
203-696 A Bridgeport CT BRPTCT01DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-697 A Wallingford CT WLFRCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-697 0 Wallingford CT WLFRCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-697 1 Wallingford CT WLFRCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-697 2 Wallingford CT WLFRCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-697 3 Wallingford CT WLFRCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-697 4 Wallingford CT WLFRCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-697 5 Wallingford CT WLFRCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2011-08-27   
203-697 6 Wallingford CT WLFRCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-697 7 Wallingford CT WLFRCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2011-08-27   
203-697 8 Wallingford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2015-05-08   
203-697 9 Wallingford CT WLFRCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-698 A Old Greenwich CT OGNWCT00RS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-698 0 Old Greenwich CT OGNWCT00RS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-698 1 Old Greenwich CT OGNWCT00RS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-698 2 Old Greenwich CT OGNWCT00RS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-698 3 Old Greenwich CT OGNWCT00RS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-698 4 Old Greenwich CT OGNWCT00RS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-698 5 Old Greenwich CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2012-07-26   
203-698 6 Old Greenwich CT   829J PAETEC ITEL, LLC 920   2006-12-04   
203-698 7 Old Greenwich CT OGNWCT00RS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-698 8 Old Greenwich CT OGNWCT00RS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-698 9 Old Greenwich CT OGNWCT00RS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-699 A Cheshire CT CHSHCT01DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-699 0 Cheshire CT CHSHCT01DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-699 1 Cheshire CT CHSHCT01DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-699 2 Cheshire CT CHSHCT01DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-699 3 Cheshire CT CHSHCT01DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-699 4 Cheshire CT CHSHCT01DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-699 5 Cheshire CT CHSHCT01DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-699 6 Cheshire CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2014-02-08   
203-699 7 Cheshire CT CHSHCT01DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-699 8 Cheshire CT CHSHCT01DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-699 9 Cheshire CT CHSHCT01DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-701 A Milford CT NWHNCT02X5X  7421 AT&T - LOCAL 920      
203-701 0 Milford CT   829J PAETEC ITEL, LLC 920   2001-05-17   
203-701 1 Milford CT   145J TERRA NOVA TELECOM INC. 920   2022-04-17   
203-701 2 Milford CT   829J PAETEC ITEL, LLC 920   2006-12-05   
203-701 3 Milford CT NWHNCT02X5X  7421 AT&T - LOCAL 920      
203-701 4 Milford CT HRFRCTASDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 920   2009-08-03   
203-701 5 Milford CT SMFRCTCTDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920   2009-05-11   
203-701 6 Milford CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2010-02-28   
203-701 7 Milford CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2010-07-03   

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Last updated: Sun, 17 May 2026 03:26:51 UTC

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