Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Greenwich, CT

<< 1 2 3 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
203-625 8   9104 VERIZON NEW YORK, INC. 132      
203-625 9   9104 VERIZON NEW YORK, INC. 132      
203-629 A GNWCCTGNDS0  9104 VERIZON NEW YORK, INC. 132      
203-661 A GNWCCTGNDS0  9104 VERIZON NEW YORK, INC. 132      
203-717 A   612K CSC VOICE, LLC 132      
203-717 0   539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 132   2012-09-15   
203-717 1   612K CSC VOICE, LLC 132   2011-03-28   
203-717 2   350E YMAX COMMUNICATIONS CORP. - CT 132   2011-07-11   
203-717 3   350E YMAX COMMUNICATIONS CORP. - CT 132   2011-07-11   
203-717 4   639C ONVOY, LLC - CT 132   2016-10-31   
203-717 5   639C ONVOY, LLC - CT 132   2018-04-02   
203-717 6   829J PAETEC ITEL, LLC 132   2012-09-03   
203-717 7   639C ONVOY, LLC - CT 132   2013-11-03   
203-717 8   350E YMAX COMMUNICATIONS CORP. - CT 132   2011-04-28   
203-717 9   639C ONVOY, LLC - CT 132   2018-03-08   
203-742 A WHPLNYYFDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 132      
203-742 0   199F BANDWIDTH.COM CLEC, LLC - CT 132   2015-08-22   
203-742 1   4800 LEVEL 3 COMMUNICATIONS, LLC - CT 132   2008-01-31   
203-742 2   7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 132   2004-08-13   
203-742 3   7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 132   2004-06-19   
203-742 4   4950 CABLEVISION LIGHTPATH, INC. - CT 132   2007-01-05   
203-742 5   7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 132   2007-06-13   
203-742 6   7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 132   2007-01-15   
203-742 7   7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 132   2006-06-22   
203-742 8   7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 132   2004-04-25   
203-742 9   7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 132   2003-05-26   
203-769 A GNWCCTGNDS0  9104 VERIZON NEW YORK, INC. 132      
203-769 0   350E YMAX COMMUNICATIONS CORP. - CT 132   2010-08-09   
203-769 1   612K CSC VOICE, LLC 132   2010-07-23   
203-769 2   9104 VERIZON NEW YORK, INC. 132      
203-769 3   829J PAETEC ITEL, LLC 132   2015-11-07   
203-769 4   9104 VERIZON NEW YORK, INC. 132      
203-769 5   612K CSC VOICE, LLC 132   2007-04-03   
203-769 6   350E YMAX COMMUNICATIONS CORP. - CT 132   2008-07-05   
203-769 7   7316 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 132   2014-09-30   
203-769 8   4950 CABLEVISION LIGHTPATH, INC. - CT 132   2008-07-04   
203-769 9   639C ONVOY, LLC - CT 132   2016-02-01   
203-861 A GNWCCTGNDS0  9104 VERIZON NEW YORK, INC. 132      
203-862 A GNWCCTGNDS0  9104 VERIZON NEW YORK, INC. 132      
203-863 A GNWCCTGNDS0  9104 VERIZON NEW YORK, INC. 132      
203-869 A GNWCCTGNDS0  9104 VERIZON NEW YORK, INC. 132      
203-900 A   612K CSC VOICE, LLC 132      
203-900 0   539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 132   2012-09-15   
203-900 1   612K CSC VOICE, LLC 132   2012-04-23   
203-900 2   4800 LEVEL 3 COMMUNICATIONS, LLC - CT 132   2013-01-05   
203-900 3   4800 LEVEL 3 COMMUNICATIONS, LLC - CT 132   2014-10-27   
203-900 4   199F BANDWIDTH.COM CLEC, LLC - CT 132   2014-11-08   
203-900 5   4950 CABLEVISION LIGHTPATH, INC. - CT 132   2013-12-12   
203-900 6   7140 TC SYSTEMS, INC. - NY 132   2013-05-13   
203-900 7   199F BANDWIDTH.COM CLEC, LLC - CT 132   2014-11-08   
203-900 8   539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 132   2012-09-15   
203-900 9   539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 132   2015-07-11   
203-930 A   4800 LEVEL 3 COMMUNICATIONS, LLC - CT 132   2025-04-25   
203-930 0   350E YMAX COMMUNICATIONS CORP. - CT 132   2010-10-26   
203-930 1   4800 LEVEL 3 COMMUNICATIONS, LLC - CT 132   2010-05-07   
203-930 2   4800 LEVEL 3 COMMUNICATIONS, LLC - CT 132      
203-930 3   4800 LEVEL 3 COMMUNICATIONS, LLC - CT 132      
203-930 4   624H ONVOY SPECTRUM, LLC 132   2021-11-08   
203-930 5   639C ONVOY, LLC - CT 132      
203-930 6   350E YMAX COMMUNICATIONS CORP. - CT 132   2009-02-06   
203-930 7   7316 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 132   2008-10-15   
203-930 8   350E YMAX COMMUNICATIONS CORP. - CT 132   2008-06-01   
203-930 9   145J TERRA NOVA TELECOM INC. 132   2025-04-28   
203-971 A GNWCCTGNX5Y  4950 CABLEVISION LIGHTPATH, INC. - CT 132      
203-971 0   639C ONVOY, LLC - CT 132   2021-07-03   
203-971 1   639C ONVOY, LLC - CT 132   2021-07-03   
203-971 2   639C ONVOY, LLC - CT 132   2021-07-03   
203-971 3   4950 CABLEVISION LIGHTPATH, INC. - CT 132      
203-971 4   866H BARR TEL USA, INC. - CT 132   2021-09-09   
203-971 5   639C ONVOY, LLC - CT 132   2021-07-03   
203-971 6   639C ONVOY, LLC - CT 132   2022-09-17   
203-971 7   9104 VERIZON NEW YORK, INC. 132   2007-04-24   
203-971 8   350E YMAX COMMUNICATIONS CORP. - CT 132   2008-06-01   
203-971 9   350E YMAX COMMUNICATIONS CORP. - CT 132   2008-04-21   
203-983 A   829J PAETEC ITEL, LLC 132      
203-983 0   350E YMAX COMMUNICATIONS CORP. - CT 132   2009-09-15   
203-983 1   9104 VERIZON NEW YORK, INC. 132   2008-10-10   
203-983 2   9104 VERIZON NEW YORK, INC. 132   2008-10-10   
203-983 3   829J PAETEC ITEL, LLC 132   2005-12-05   
203-983 4   4950 CABLEVISION LIGHTPATH, INC. - CT 132   2007-04-03   
203-983 5   829J PAETEC ITEL, LLC 132   2003-07-31   
203-983 6   829J PAETEC ITEL, LLC 132      
203-983 7   829J PAETEC ITEL, LLC 132   2005-02-12   
203-983 8   350E YMAX COMMUNICATIONS CORP. - CT 132   2008-07-05   
203-983 9   350E YMAX COMMUNICATIONS CORP. - CT 132   2008-12-16   
203-987 A NYCMNY83DSZ  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 132      
203-987 0   350E YMAX COMMUNICATIONS CORP. - CT 132   2009-09-15   
203-987 1   829J PAETEC ITEL, LLC 132   2006-07-01   
203-987 2   350E YMAX COMMUNICATIONS CORP. - CT 132   2009-02-06   
203-987 3   4800 LEVEL 3 COMMUNICATIONS, LLC - CT 132   2005-05-01   
203-987 4   4800 LEVEL 3 COMMUNICATIONS, LLC - CT 132      
203-987 5   4800 LEVEL 3 COMMUNICATIONS, LLC - CT 132   2004-08-09   
203-987 6   4800 LEVEL 3 COMMUNICATIONS, LLC - CT 132   2005-05-01   
203-987 7   350E YMAX COMMUNICATIONS CORP. - CT 132   2009-02-06   
203-987 8   350E YMAX COMMUNICATIONS CORP. - CT 132   2008-07-05   
203-987 9   350E YMAX COMMUNICATIONS CORP. - CT 132   2008-12-16   
203-992 A   612K CSC VOICE, LLC 132      
203-992 0   7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 132   2008-03-03   
203-992 1   612K CSC VOICE, LLC 132   2006-07-03   
203-992 2   350E YMAX COMMUNICATIONS CORP. - CT 132   2009-02-06   

<< 1 2 3 >>

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.