Local Calling Guide

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
443-807 4 Fallston MD   238   2005-03-12   
443-807 6 Fallston MD   238      
443-807 7 Fallston MD   238      
443-807 8 Fallston MD   238      
443-807 9 Fallston MD   238      
443-810 A Baltimore MD BLTMMDCH40Z  238      
443-810 0 Baltimore MD BLTMMDCH40Z  238   2010-07-16   
443-810 1 Baltimore MD BLTMMDCH40Z  238   2010-08-01   
443-810 3 Baltimore MD BLTMMDCH40Z  238   2010-08-01   
443-810 4 Baltimore MD BLTMMDCH40Z  238   2009-12-26   
443-810 5 Baltimore MD BLTMMDCH40Z  238   2010-01-26   
443-810 6 Baltimore MD BLTMMDCH40Z  238   2008-11-10   
443-810 7 Baltimore MD BLTMMDCH40Z  238   2008-11-10   
443-810 8 Baltimore MD BLTMMDCH40Z  238   2008-11-10   
443-810 9 Baltimore MD BLTMMDCH40Z  238   2008-11-10   
443-813 3 Baltimore MD BLTMMDCH40Z  238   2008-02-04   
443-813 4 Baltimore MD BLTMMDCH40Z  238   2008-02-04   
443-813 5 Baltimore MD BLTMMDCH40Z  238   2008-02-04   
443-813 6 Baltimore MD BLTMMDCH40Z  238   2008-02-11   
443-813 7 Baltimore MD BLTMMDCH40Z  238   2008-02-11   
443-813 8 Baltimore MD BLTMMDCH40Z  238   2008-02-11   
443-813 9 Baltimore MD BLTMMDCH40Z  238   2008-04-08   
443-814 1 Baltimore MD BLTMMDCH40Z  238   2010-08-16   
443-814 2 Baltimore MD BLTMMDCH40Z  238   2010-08-16   
443-814 3 Baltimore MD BLTMMDCH40Z  238   2010-08-16   
443-814 4 Baltimore MD BLTMMDCH40Z  238   2010-08-16   
443-814 5 Baltimore MD BLTMMDCH40Z  238   2010-08-16   
443-814 6 Baltimore MD BLTMMDCH40Z  238   2010-08-16   
443-814 7 Baltimore MD BLTMMDCH40Z  238   2010-10-01   
443-814 8 Baltimore MD BLTMMDCH40Z  238   2010-10-01   
443-815 1 Essex MD BLTMMDCH40Z  238   2014-11-08   
443-815 8 Essex MD BLTMMDCH40Z  238   2014-10-10   
443-815 9 Essex MD BLTMMDCH40Z  238   2014-11-08   
443-819 A Bel Air MD BLTMMDCH40Z  238      
443-819 6 Bel Air MD BLTMMDCH40Z  238   2015-10-09   
443-819 7 Bel Air MD BLTMMDCH40Z  238   2015-10-09   
443-819 8 Bel Air MD BLTMMDCH40Z  238   2015-03-21   
443-819 9 Bel Air MD BLTMMDCH40Z  238   2015-03-21   
443-822 A Annapolis MD BLTMMDCH40Z  238      
443-822 0 Annapolis MD BLTMMDCH40Z  238      
443-822 1 Annapolis MD BLTMMDCH40Z  238      
443-822 2 Annapolis MD BLTMMDCH40Z  238   2007-01-03   
443-822 3 Annapolis MD BLTMMDCH40Z  238      
443-822 4 Annapolis MD BLTMMDCH40Z  238      
443-822 5 Annapolis MD BLTMMDCH40Z  238      
443-822 6 Annapolis MD BLTMMDCH40Z  238      
443-822 7 Annapolis MD BLTMMDCH40Z  238      
443-822 8 Annapolis MD BLTMMDCH40Z  238      
443-822 9 Annapolis MD BLTMMDCH40Z  238      
443-824 A Towson MD BLTMMDCH40Z  238      
443-824 0 Towson MD BLTMMDCH40Z  238      
443-824 2 Towson MD BLTMMDCH40Z  238      
443-824 3 Towson MD BLTMMDCH40Z  238      
443-824 4 Towson MD BLTMMDCH40Z  238      
443-824 6 Towson MD BLTMMDCH40Z  238      
443-824 9 Towson MD BLTMMDCH40Z  238      
443-825 A Baltimore MD BLTMMDCH40Z  238      
443-825 0 Baltimore MD BLTMMDCH40Z  238   2007-04-08   
443-825 1 Baltimore MD BLTMMDCH40Z  238   2007-04-08   
443-825 2 Baltimore MD BLTMMDCH40Z  238   2007-04-23   
443-825 5 Baltimore MD BLTMMDCH40Z  238   2007-01-20   
443-825 6 Baltimore MD BLTMMDCH40Z  238   2007-01-20   
443-825 7 Baltimore MD BLTMMDCH40Z  238   2007-01-20   
443-825 8 Baltimore MD BLTMMDCH40Z  238   2007-01-20   
443-825 9 Baltimore MD BLTMMDCH40Z  238   2007-01-20   
443-829 A Baltimore MD BLTMMDCH40Z  238      
443-829 0 Baltimore MD BLTMMDCH40Z  238      
443-829 1 Baltimore MD BLTMMDCH40Z  238      
443-829 2 Baltimore MD BLTMMDCH40Z  238      
443-829 3 Baltimore MD BLTMMDCH40Z  238      
443-829 4 Baltimore MD BLTMMDCH40Z  238      
443-829 5 Baltimore MD BLTMMDCH40Z  238      
443-829 6 Baltimore MD BLTMMDCH40Z  238      
443-829 8 Baltimore MD BLTMMDCH40Z  238      
443-830 4 Catonsville MD BLTMMDCH40Z  238   2024-11-18   
443-830 7 Catonsville MD BLTMMDCH40Z  238   2021-10-10   
443-837 4 Annapolis MD BLTMMDCH40Z  238   2023-01-30   
443-837 8 Annapolis MD BLTMMDCH40Z  238   2007-12-20   
443-839 A Baltimore MD BLTMMDCH40Z  238      
443-839 2 Baltimore MD BLTMMDCH40Z  238   2006-07-09   
443-839 3 Baltimore MD BLTMMDCH40Z  238   2006-07-09   
443-839 4 Baltimore MD BLTMMDCH40Z  238   2006-06-08   
443-839 5 Baltimore MD BLTMMDCH40Z  238   2006-06-08   
443-839 6 Baltimore MD BLTMMDCH40Z  238   2006-06-08   
443-839 7 Baltimore MD BLTMMDCH40Z  238   2006-06-08   
443-839 8 Baltimore MD BLTMMDCH40Z  238   2008-04-08   
443-839 9 Baltimore MD BLTMMDCH40Z  238   2006-06-08   
443-847 4 Towson MD BLTMMDCH40Z  238   2007-03-11   
443-848 A Glen Burnie MD BLTMMDCH40Z  238      
443-848 2 Glen Burnie MD BLTMMDCH40Z  238   2003-12-01   
443-850 A Baltimore MD BLTMMDCH40Z  238      
443-851 A Catonsville MD BLTMMDCH40Z  238      
443-851 0 Catonsville MD BLTMMDCH40Z  238      
443-851 1 Catonsville MD BLTMMDCH40Z  238      
443-851 3 Catonsville MD BLTMMDCH40Z  238      
443-851 6 Catonsville MD BLTMMDCH40Z  238      
443-851 9 Catonsville MD BLTMMDCH40Z  238      
443-852 8 Annapolis MD BLTMMDCH40Z  238   2007-12-20   
443-852 9 Annapolis MD BLTMMDCH40Z  238   2007-01-03   
443-854 A Baltimore MD BLTMMDCH40Z  238      

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Last updated: Fri, 25 Jul 2025 03:21:23 UTC

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