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: CLMAMDJTAMD

<< 1 2 3 4

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
443-679 1 Severn MD 2589 US LEC OF MARYLAND, INC. 238   2002-04-22   
443-683 8 Baltimore MD 2589 US LEC OF MARYLAND, INC. 238   2007-11-10   
443-693 1 Perryville MD 2589 US LEC OF MARYLAND, INC. 238   2004-02-05   
443-702 4 Armiger-Gibson Island MD 2589 US LEC OF MARYLAND, INC. 238   2007-06-15   
443-732 1 Silver Run MD 2589 US LEC OF MARYLAND, INC. 238   2004-02-05   
443-733 1 Waterloo MD 2589 US LEC OF MARYLAND, INC. 238   2003-03-04   
443-743 1 Baltimore MD 2589 US LEC OF MARYLAND, INC. 238   2008-07-09   
443-747 2 Port Deposit MD 2589 US LEC OF MARYLAND, INC. 238   2004-02-05   
443-760 3 Aberdeen MD 2589 US LEC OF MARYLAND, INC. 236   2010-03-08   
443-769 1 Baltimore MD 2589 US LEC OF MARYLAND, INC. 238   2008-12-21   
443-770 1 Armiger-Gibson Island MD 2589 US LEC OF MARYLAND, INC. 238   2004-01-10   
443-780 A Woodlawn MD 2589 US LEC OF MARYLAND, INC. 238      
443-780 0 Woodlawn MD 2589 US LEC OF MARYLAND, INC. 238      
443-780 1 Woodlawn MD 2589 US LEC OF MARYLAND, INC. 238      
443-780 2 Woodlawn MD 2589 US LEC OF MARYLAND, INC. 238      
443-780 3 Woodlawn MD 2589 US LEC OF MARYLAND, INC. 238      
443-780 9 Woodlawn MD 2589 US LEC OF MARYLAND, INC. 238      
443-798 7 Towson MD 2589 US LEC OF MARYLAND, INC. 238   2007-08-28   
443-825 3 Baltimore MD 2589 US LEC OF MARYLAND, INC. 238   2007-05-01   
443-833 A Arbutus MD 2589 US LEC OF MARYLAND, INC. 238      
443-833 1 Arbutus MD 2589 US LEC OF MARYLAND, INC. 238   2002-11-19   
443-837 A Annapolis MD 2589 US LEC OF MARYLAND, INC. 238      
443-837 0 Annapolis MD 2589 US LEC OF MARYLAND, INC. 238      
443-837 1 Annapolis MD 2589 US LEC OF MARYLAND, INC. 238      
443-837 2 Annapolis MD 2589 US LEC OF MARYLAND, INC. 238      
443-837 3 Annapolis MD 2589 US LEC OF MARYLAND, INC. 238      
443-837 9 Annapolis MD 2589 US LEC OF MARYLAND, INC. 238      
443-907 1 Elkton MD 2589 US LEC OF MARYLAND, INC. 238   2004-02-05   
443-914 1 Worthington MD 2589 US LEC OF MARYLAND, INC. 238   2004-01-10   
443-918 2 Taneytown MD 2589 US LEC OF MARYLAND, INC. 238   2004-02-05   
443-937 1 Union Bridge MD 2589 US LEC OF MARYLAND, INC. 238   2004-02-05   
443-955 7 Baltimore MD 2589 US LEC OF MARYLAND, INC. 238   2007-11-10   
667-204 A Annapolis MD 2589 US LEC OF MARYLAND, INC. 238      
667-204 3 Annapolis MD 2589 US LEC OF MARYLAND, INC. 238   2017-02-27   
667-204 4 Annapolis MD 2589 US LEC OF MARYLAND, INC. 238   2017-02-27   
667-204 5 Annapolis MD 2589 US LEC OF MARYLAND, INC. 238   2017-02-27   
667-204 6 Annapolis MD 2589 US LEC OF MARYLAND, INC. 238   2017-02-27   
667-204 7 Annapolis MD 2589 US LEC OF MARYLAND, INC. 238   2017-02-26   
667-217 3 Baltimore MD 2589 US LEC OF MARYLAND, INC. 238   2014-05-01   
667-219 2 Baltimore MD 2589 US LEC OF MARYLAND, INC. 238   2015-03-30   
667-229 1 Aberdeen MD 2589 US LEC OF MARYLAND, INC. 236   2016-04-08   

<< 1 2 3 4

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.