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.

Switch: BLTMMDSN6MD

<< 1 2 3 4 5 6 7 8 9 10 11 >>

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
443-898 1 Pikesville MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2011-11-05   
443-898 9 Pikesville MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-12-08   
443-899 A Waterloo MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-899 9 Waterloo MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-918 5 Taneytown MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-03-05   
443-918 6 Taneytown MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2012-02-24   
443-926 A Annapolis MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-926 0 Annapolis MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-926 5 Annapolis MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-926 8 Annapolis MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2007-01-14   
443-926 9 Annapolis MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-927 A Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-927 0 Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-927 1 Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-927 2 Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-927 3 Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-927 7 Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-927 8 Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-927 9 Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-938 9 Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2007-11-07   
443-951 4 Annapolis MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-955 5 Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-06-26   
443-955 6 Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-06-26   
443-957 1 Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2005-03-12   
443-957 4 Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2004-05-29   
443-962 1 Glen Burnie MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2007-11-20   
443-962 6 Glen Burnie MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-02-13   
443-964 A North Beach MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-965 9 Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2010-08-09   
443-977 4 Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-12-08   
443-977 6 Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-12-08   
443-986 9 Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-10-25   
443-991 7 Towson MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2012-02-27   
443-992 A Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-992 4 Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-992 7 Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2004-09-03   
667-200 4 Columbia MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2017-12-22   
667-207 2 Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2013-09-30   
667-207 6 Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2014-10-23   
667-207 8 Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2014-11-22   
667-218 2 Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2015-08-01   
667-219 3 Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2015-06-13   
667-219 4 Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2015-06-13   
667-225 6 Annapolis MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2015-11-01   
667-251 A Towson MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
667-251 0 Towson MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2015-02-14   
667-251 1 Towson MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2015-02-14   
667-251 2 Towson MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2015-02-14   
667-251 3 Towson MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2015-02-14   
667-251 4 Towson MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2015-02-14   

<< 1 2 3 4 5 6 7 8 9 10 11 >>

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.