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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
203-563 9 Wilton CT WLTOCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-564 A Stamford CT NWHNCT02X5X  7421 AT&T - LOCAL 920      
203-564 0 Stamford CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2004-01-12   
203-564 1 Stamford CT NWHNCT02X5X  7421 AT&T - LOCAL 920      
203-564 2 Stamford CT   145J TERRA NOVA TELECOM INC. 920   2023-08-05   
203-564 3 Stamford CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2004-04-16   
203-564 4 Stamford CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2014-09-06   
203-564 5 Stamford CT NWHNCT02X5X  7421 AT&T - LOCAL 920      
203-564 6 Stamford CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2004-08-08   
203-564 7 Stamford CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2014-09-06   
203-564 8 Stamford CT NWHNCT02X5X  7421 AT&T - LOCAL 920   2009-06-14   
203-564 9 Stamford CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2010-08-20   
203-565 A Waterbury CT BLFDCTAP2MD  5562 METROPCS, INC. 920   2024-02-09   
203-565 0 Waterbury CT BLFDCTAP2MD  5562 METROPCS, INC. 920   2011-02-16   
203-565 1 Waterbury CT BLFDCTAP2MD  5562 METROPCS, INC. 920      
203-565 2 Waterbury CT BLFDCTAP2MD  5562 METROPCS, INC. 920      
203-565 3 Waterbury CT BLFDCTAP2MD  5562 METROPCS, INC. 920      
203-565 4 Waterbury CT BLFDCTAP2MD  5562 METROPCS, INC. 920      
203-565 5 Waterbury CT BLFDCTAP2MD  5562 METROPCS, INC. 920      
203-565 6 Waterbury CT BLFDCTAP2MD  5562 METROPCS, INC. 920      
203-565 7 Waterbury CT BLFDCTAP2MD  5562 METROPCS, INC. 920      
203-565 8 Waterbury CT BLFDCTAP2MD  5562 METROPCS, INC. 920      
203-565 9 Waterbury CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-566 A Stamford CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920      
203-566 0 Stamford CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2003-03-22   
203-566 1 Stamford CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2003-03-22   
203-566 2 Stamford CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2003-03-22   
203-566 3 Stamford CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2003-03-22   
203-566 4 Stamford CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2003-03-22   
203-566 5 Stamford CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2003-03-22   
203-566 6 Stamford CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2003-03-22   
203-566 7 Stamford CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2003-03-22   
203-566 8 Stamford CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2003-03-22   
203-566 9 Stamford CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2003-03-22   
203-567 A Huntington CT   829J PAETEC ITEL, LLC 920      
203-567 0 Huntington CT   829J PAETEC ITEL, LLC 920      
203-567 1 Huntington CT   829J PAETEC ITEL, LLC 920      
203-567 2 Huntington CT   829J PAETEC ITEL, LLC 920      
203-567 3 Huntington CT   829J PAETEC ITEL, LLC 920      
203-567 4 Huntington CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2005-09-08   
203-567 5 Huntington CT   829J PAETEC ITEL, LLC 920      
203-567 6 Huntington CT   829J PAETEC ITEL, LLC 920      
203-567 7 Huntington CT   829J PAETEC ITEL, LLC 920      
203-567 8 Huntington CT   829J PAETEC ITEL, LLC 920      
203-567 9 Huntington CT   829J PAETEC ITEL, LLC 920      
203-568 A Waterbury CT   829J PAETEC ITEL, LLC 920      
203-568 0 Waterbury CT   829J PAETEC ITEL, LLC 920      
203-568 1 Waterbury CT   829J PAETEC ITEL, LLC 920      
203-568 2 Waterbury CT   829J PAETEC ITEL, LLC 920      
203-568 3 Waterbury CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2006-02-19   
203-568 4 Waterbury CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2008-04-21   
203-568 5 Waterbury CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2008-10-10   
203-568 6 Waterbury CT   829J PAETEC ITEL, LLC 920      
203-568 7 Waterbury CT   829J PAETEC ITEL, LLC 920      
203-568 8 Waterbury CT   829J PAETEC ITEL, LLC 920      
203-568 9 Waterbury CT   829J PAETEC ITEL, LLC 920      
203-569 A Stamford CT NRWLCT02YMD  4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-569 0 Stamford CT NRWLCT02YMD  4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-569 1 Stamford CT NRWLCT02YMD  4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-569 2 Stamford CT NRWLCT02YMD  4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-569 3 Stamford CT   612K CSC VOICE, LLC 920      
203-569 4 Stamford CT NRWLCT02YMD  4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-569 5 Stamford CT NRWLCT02YMD  4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-569 6 Stamford CT NRWLCT02YMD  4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-569 7 Stamford CT   612K CSC VOICE, LLC 920      
203-569 8 Stamford CT NRWLCT02YMD  4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-569 9 Stamford CT   612K CSC VOICE, LLC 920      
203-570 A Stamford CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-571 A Westport CT NWHNCT02X5X  7421 AT&T - LOCAL 920      
203-571 0 Westport CT   145J TERRA NOVA TELECOM INC. 920   2025-10-16   
203-571 1 Westport CT   829J PAETEC ITEL, LLC 920   2001-05-17   
203-571 2 Westport CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2016-01-19   
203-571 3 Westport CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2014-05-02   
203-571 4 Westport CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2014-05-02   
203-571 5 Westport CT NWHNCT02X5X  7421 AT&T - LOCAL 920      
203-571 6 Westport CT   829J PAETEC ITEL, LLC 920   2006-05-25   
203-571 7 Westport CT   6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2005-11-28   
203-571 8 Westport CT BLFDCTAP2MD  5562 METROPCS, INC. 920   2002-12-11   
203-571 9 Westport CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2016-01-19   
203-572 A Bridgeport CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-572 0 Bridgeport CT   612K CSC VOICE, LLC 920   2007-12-21   
203-572 1 Bridgeport CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2010-02-28   
203-572 2 Bridgeport CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2007-12-17   
203-572 3 Bridgeport CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2007-12-17   
203-572 4 Bridgeport CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2007-12-17   
203-572 5 Bridgeport CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2010-02-28   
203-572 6 Bridgeport CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2008-08-04   
203-572 7 Bridgeport CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2007-09-03   
203-572 8 Bridgeport CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2007-09-03   
203-572 9 Bridgeport CT BLFDCTAP2MD  5562 METROPCS, INC. 920   2011-02-26   
203-573 A Waterbury CT WTRBCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-574 A Waterbury CT WTRBCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-575 A Waterbury CT WTRBCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-576 A Bridgeport CT BRPTCT01DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-577 A Waterbury CT MDLBCT00RS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-577 0 Waterbury CT MDLBCT00RS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-577 1 Waterbury CT MDLBCT00RS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-577 2 Waterbury CT MDLBCT00RS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-577 3 Waterbury CT MDLBCT00RS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-577 4 Waterbury CT MDLBCT00RS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      

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

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