Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: MCLNVA23DS4

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Switch Switch name Switch type
WASHDCRKRSA  WASHINGTON  RS 

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
240-787 0 Brandywine MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-788 A Washington Zone 5 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-788 3 Washington Zone 5 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-788 4 Washington Zone 5 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2012-05-12   
240-790 A Washington Zone 13 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-790 0 Washington Zone 13 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-790 1 Washington Zone 13 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-790 3 Washington Zone 13 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-790 7 Washington Zone 13 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-794 A Lexington Park-Great Mills MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-794 1 Lexington Park-Great Mills MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-812 4 Poolesville MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-821 5 Washington Zone 3 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2006-01-28   
240-821 6 Washington Zone 3 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2006-01-28   
240-839 4 Washington Zone 3 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2010-06-21   
240-839 6 Washington Zone 3 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2014-04-26   
240-855 0 Washington Zone 2 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2008-02-01   
240-880 A Washington Zone 11 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-880 1 Washington Zone 11 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-880 3 Washington Zone 11 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-880 4 Washington Zone 11 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-883 A Ashton MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-883 3 Ashton MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-892 A Washington Zone 15 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-892 3 Washington Zone 15 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-897 A Washington Zone 16 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-897 9 Washington Zone 16 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-898 A Washington Zone 4 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-898 2 Washington Zone 4 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-949 2 Washington Zone 16 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2005-01-04   
240-949 4 Washington Zone 16 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2003-08-23   
240-949 6 Washington Zone 16 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2005-01-04   
240-949 7 Washington Zone 16 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2006-05-05   
301-200 4 Indian Head MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2012-04-21   
301-234 6 Washington Zone 16 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2008-05-16   
301-256 0 Laurel MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2007-11-16   
301-273 6 Washington Zone 3 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2016-03-03   
301-298 5 Washington Zone 15 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2008-03-13   
301-328 1 Washington Zone 3 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2006-12-14   
301-328 8 Washington Zone 3 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2007-11-07   
301-355 0 Gaithersburg MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2009-10-12   
301-355 2 Gaithersburg MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2011-01-22   
301-358 A Washington Zone 15 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
301-358 0 Washington Zone 15 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
301-358 1 Washington Zone 15 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
301-358 2 Washington Zone 15 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
301-358 3 Washington Zone 15 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2005-01-04   
301-358 4 Washington Zone 15 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2003-03-24   
301-358 5 Washington Zone 15 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2005-01-04   
301-358 6 Washington Zone 15 MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2006-09-29   

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Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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