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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
203-923 7 Bridgeport CT BLFDCTAP2MD  5562 METROPCS, INC. 920   2002-12-30   
203-923 8 Bridgeport CT   612K CSC VOICE, LLC 920   2005-03-10   
203-923 9 Bridgeport CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920      
203-924 A Huntington CT DRBYCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-925 A Huntington CT HNTNCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-926 A Huntington CT HNTNCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-927 A New Haven CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
203-927 0 New Haven CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2004-06-18   
203-927 1 New Haven CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
203-927 2 New Haven CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2003-05-13   
203-927 3 New Haven CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2004-05-14   
203-927 4 New Haven CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2004-05-14   
203-927 5 New Haven CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
203-927 6 New Haven CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2004-02-23   
203-927 7 New Haven CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2003-11-04   
203-927 8 New Haven CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2004-02-02   
203-927 9 New Haven CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2003-11-04   
203-928 A New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-928 0 New Haven CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2006-09-30   
203-928 1 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-928 2 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-928 3 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-928 4 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-928 5 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-928 6 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-928 7 New Haven CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2009-07-28   
203-928 8 New Haven CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2006-11-25   
203-928 9 New Haven CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2009-07-28   
203-929 A Huntington CT HNTNCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-930 A Greenwich CT   4800 LEVEL 3 COMMUNICATIONS, LLC - CT 132   2025-04-25   
203-930 0 Greenwich CT NYCMNY83D1S  350E YMAX COMMUNICATIONS CORP. - CT 132   2010-10-26   
203-930 1 Greenwich CT NYCMNY83DSZ  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 132   2010-05-07   
203-930 2 Greenwich CT NYCMNY83DSZ  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 132      
203-930 3 Greenwich CT NYCMNY83DSZ  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 132      
203-930 4 Greenwich CT NYCMNY37TMD  624H ONVOY SPECTRUM, LLC 132   2021-11-08   
203-930 5 Greenwich CT NYCMNYBXDSL  639C ONVOY, LLC - CT 132      
203-930 6 Greenwich CT NYCMNY83D1S  350E YMAX COMMUNICATIONS CORP. - CT 132   2009-02-06   
203-930 7 Greenwich CT NYCMNY83DS0  7316 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 132   2008-10-15   
203-930 8 Greenwich CT NYCMNY83D1S  350E YMAX COMMUNICATIONS CORP. - CT 132   2008-06-01   
203-930 9 Greenwich CT   145J TERRA NOVA TELECOM INC. 132   2025-04-28   
203-931 A New Haven CT WSHNCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-931 0 New Haven CT WSHNCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-931 1 New Haven CT WSHNCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-931 2 New Haven CT WSHNCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-931 3 New Haven CT WSHNCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-931 4 New Haven CT WSHNCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-931 5 New Haven CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2007-12-28   
203-931 6 New Haven CT WSHNCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-931 7 New Haven CT WSHNCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-931 8 New Haven CT WSHNCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      

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

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