Local Calling Guide

Area code/prefix search

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OCN: 4773 XO MARYLAND, LLC

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
301-250 7 Gaithersburg MD WASHDCCZDS1  236   2010-12-30   
301-398 7 Washington Zone 10 MD WASHDCCZDS1  236   2003-11-09   
301-398 8 Washington Zone 10 MD WASHDCCZDS1  236   2003-11-09   
301-398 9 Washington Zone 10 MD WASHDCCZDS1  236   2003-11-09   
301-500 A Washington Zone 2 MD WASHDCCZDS1  236      
301-500 2 Washington Zone 2 MD WASHDCCZDS1  236   2011-04-18   
301-547 8 Washington Zone 2 MD WASHDCCZDS1  236   2014-02-21   
301-836 3 Washington Zone 5 MD WASHDCCZDS1  236   2011-01-25   
410-205 2 Pikesville MD BLTMMDSNDS5  238   2009-09-09   
410-630 3 Chase MD BLTMMDSNDS5  238   2005-08-14   
410-630 5 Chase MD BLTMMDSNDS5  238   2005-08-14   
443-203 2 West River MD BLTMMDSNDS5  238   2008-06-20   
443-203 3 West River MD BLTMMDSNDS5  238   2007-04-20   
443-213 1 Pikesville MD BLTMMDSNDS5  238   2006-09-11   
443-228 4 Chase MD BLTMMDSNDS5  238   2005-12-12   
443-304 3 Arbutus MD BLTMMDSNDS5  238   2006-10-14   
443-319 8 Columbia MD BLTMMDSNDS5  238   2010-11-19   
443-327 4 Aberdeen MD BLTMMDSNDS5  236   2005-10-13   
443-327 5 Aberdeen MD BLTMMDSNDS5  236   2005-10-13   
443-330 6 Cockeysville MD BLTMMDSNDS5  238   2011-04-13   
443-335 A Brooklyn Park-Linthicum MD BLTMMDSNDS5  238      
443-335 3 Brooklyn Park-Linthicum MD BLTMMDSNDS5  238      
443-345 3 Aberdeen MD BLTMMDSNDS5  236   2010-03-13   
443-388 5 Baltimore MD BLTMMDSNDS5  238   2006-07-28   
443-403 4 Aberdeen MD BLTMMDSNDS5  236   2010-10-20   
443-403 5 Aberdeen MD BLTMMDSNDS5  236   2010-10-20   
443-403 6 Aberdeen MD BLTMMDSNDS5  236   2010-10-20   
443-403 7 Aberdeen MD BLTMMDSNDS5  236   2010-10-20   
443-408 3 Sparrows Point MD BLTMMDSNDS5  238   2005-10-13   
443-408 4 Sparrows Point MD BLTMMDSNDS5  238   2005-10-13   
443-445 4 Elkridge MD BLTMMDSNDS5  238   2005-02-15   
443-445 5 Elkridge MD BLTMMDSNDS5  238   2005-02-15   
443-445 6 Elkridge MD BLTMMDSNDS5  238   2005-02-15   
443-459 5 Elkridge MD BLTMMDSNDS5  238   2005-12-12   
443-478 2 Baltimore MD BLTMMDSNDS5  238   2010-01-30   
443-478 4 Baltimore MD BLTMMDSNDS5  238   2010-03-04   
443-478 5 Baltimore MD BLTMMDSNDS5  238   2010-03-04   
443-488 5 Baltimore MD BLTMMDSNDS5  238   2010-10-20   
443-488 6 Baltimore MD BLTMMDSNDS5  238   2010-10-20   
443-488 7 Baltimore MD BLTMMDSNDS5  238   2010-10-20   
443-488 8 Baltimore MD BLTMMDSNDS5  238   2010-10-20   
443-488 9 Baltimore MD BLTMMDSNDS5  238   2010-10-20   
443-558 2 Aberdeen MD BLTMMDSNDS5  236   2013-08-07   
443-578 A Cockeysville MD BLTMMDSNDS5  238      
443-578 0 Cockeysville MD BLTMMDSNDS5  238      
443-578 4 Cockeysville MD BLTMMDSNDS5  238      
443-578 5 Cockeysville MD BLTMMDSNDS5  238      
443-627 9 Baltimore MD BLTMMDSNDS5  238   2010-10-20   
443-663 1 Woodlawn MD BLTMMDSNDS5  238   2013-11-04   
443-681 1 Baltimore MD BLTMMDSNDS5  238   2010-12-06   

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

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