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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
203-487 3 Stamford CT   4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-487 4 Stamford CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-487 5 Stamford CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-487 6 Stamford CT   829J PAETEC ITEL, LLC 920   2002-12-16   
203-487 7 Stamford CT   829J PAETEC ITEL, LLC 920   2003-10-21   
203-487 8 Stamford CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2014-10-24   
203-487 9 Stamford CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-488 A Branford CT BRFRCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-489 A Greenwich CT GNWCCTGNX5X  4950 CABLEVISION LIGHTPATH, INC. - CT 132      
203-489 0 Greenwich CT NYCMNYZRDBS  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 132   2011-12-10   
203-489 1 Greenwich CT   829J PAETEC ITEL, LLC 132   2012-02-09   
203-489 2 Greenwich CT WHPLNYWPXOY  199F BANDWIDTH.COM CLEC, LLC - CT 132   2012-04-20   
203-489 3 Greenwich CT WHPLNYWPAMD  4950 CABLEVISION LIGHTPATH, INC. - CT 132   2011-07-22   
203-489 4 Greenwich CT GNWCCTGNX5X  4950 CABLEVISION LIGHTPATH, INC. - CT 132   2012-04-27   
203-489 5 Greenwich CT WHPLNYWPXOY  199F BANDWIDTH.COM CLEC, LLC - CT 132   2012-08-11   
203-489 6 Greenwich CT WHPLNYWPXOY  199F BANDWIDTH.COM CLEC, LLC - CT 132   2014-04-19   
203-489 7 Greenwich CT NYCMNYZRYMD  508J CENTURYLINK COMMUNICATIONS, LLC 132   2014-04-28   
203-489 8 Greenwich CT NYCMNYZRDBS  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 132   2012-04-09   
203-489 9 Greenwich CT NYCMNYZRDBS  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 132   2012-04-27   
203-490 A Naugatuck CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-490 0 Naugatuck CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2005-01-17   
203-490 1 Naugatuck CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-490 2 Naugatuck CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2005-02-07   
203-490 3 Naugatuck CT HRFRCTASDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 920   2007-04-15   
203-490 4 Naugatuck CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2003-08-12   
203-490 5 Naugatuck CT BLFDCTAP2MD  5562 METROPCS, INC. 920   2009-09-10   
203-490 6 Naugatuck CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2010-09-09   
203-490 7 Naugatuck CT BLFDCTAP2MD  5562 METROPCS, INC. 920   2005-12-29   
203-490 8 Naugatuck CT BLFDCTAP2MD  5562 METROPCS, INC. 920   2004-04-09   
203-490 9 Naugatuck CT BLFDCTAP2MD  5562 METROPCS, INC. 920   2002-12-11   
203-491 A Newtown CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920      
203-491 0 Newtown CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2010-04-12   
203-491 1 Newtown CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2010-07-03   
203-491 2 Newtown CT WLMNCT132MD  792K CHARTER IP ENABLED SERVICES, LLC 920   2012-05-31   
203-491 3 Newtown CT HRFRCTASDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 920   2012-08-31   
203-491 4 Newtown CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2011-05-27   
203-491 5 Newtown CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2012-10-06   
203-491 6 Newtown CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2013-01-25   
203-491 7 Newtown CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2013-04-07   
203-491 8 Newtown CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2010-11-13   
203-491 9 Newtown CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2010-04-13   
203-492 A New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-492 0 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-492 1 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-492 2 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-492 3 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-492 4 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-492 5 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-492 6 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-492 7 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-492 8 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-492 9 New Haven CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2006-03-07   
203-493 A Georgetown CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-493 0 Georgetown CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2004-11-11   
203-493 1 Georgetown CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2008-11-29   
203-493 2 Georgetown CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2006-01-02   
203-493 3 Georgetown CT   515J IP HORIZON LLC 920   2022-08-04   
203-493 4 Georgetown CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2010-02-28   
203-493 5 Georgetown CT HRFRCTCR3MD  318J COMCAST IP PHONE, LLC 920   2010-09-02   
203-493 6 Georgetown CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2011-06-01   
203-493 7 Georgetown CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2011-08-15   
203-493 8 Georgetown CT   145J TERRA NOVA TELECOM INC. 920   2022-04-17   
203-493 9 Georgetown CT NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920   2021-11-08   
203-494 A New Haven CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
203-495 A New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-496 A Greenwich CT NYCMNYAACML  5562 METROPCS, INC. 132      
203-496 0 Greenwich CT NYCMNYAACML  5562 METROPCS, INC. 132      
203-496 1 Greenwich CT NYCMNYAACML  5562 METROPCS, INC. 132      
203-496 2 Greenwich CT NYCMNYAACML  5562 METROPCS, INC. 132      
203-496 3 Greenwich CT   6622 OMNIPOINT COMMUNICATIONS, INC. - NY 132      
203-496 4 Greenwich CT NYCMNYBXDSL  639C ONVOY, LLC - CT 132   2016-02-04   
203-496 5 Greenwich CT NYCMNYBXDSL  639C ONVOY, LLC - CT 132   2016-05-06   
203-496 6 Greenwich CT   6622 OMNIPOINT COMMUNICATIONS, INC. - NY 132      
203-496 7 Greenwich CT NYCMNYAACML  5562 METROPCS, INC. 132      
203-496 8 Greenwich CT NYCMNYBXDSL  639C ONVOY, LLC - CT 132   2016-05-06   
203-496 9 Greenwich CT NYCMNYAACML  5562 METROPCS, INC. 132      
203-497 A New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-497 0 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-497 1 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-497 2 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-497 3 New Haven CT HRFRCTASDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 920   2008-08-01   
203-497 4 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-497 5 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-497 6 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-497 7 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-497 8 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-497 9 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-498 A New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-499 A New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-499 0 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-499 1 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-499 2 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-499 3 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-499 4 New Haven CT   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 920      
203-499 5 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-499 6 New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-499 7 New Haven CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2005-11-04   
203-499 8 New Haven CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2005-10-03   
203-499 9 New Haven CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2005-10-03   
203-500 A New Haven CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920      

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

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