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OCN: 6119 LEVEL 3 COMMUNICATIONS, LLC - MD

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
443-403 1 Aberdeen MD BLTMMDSN6MD  236      
443-403 2 Aberdeen MD BLTMMDSN6MD  236      
443-406 2 Elkton MD BLTMMDSN6MD  238   2006-03-03   
443-406 4 Elkton MD BLTMMDSN6MD  238   2011-11-05   
443-417 1 Fallston MD BLTMMDSN6MD  238   2008-08-13   
443-423 A Baltimore MD BLTMMDSN6MD  238      
443-423 1 Baltimore MD BLTMMDSN6MD  238      
443-426 2 Randallstown MD BLTMMDSN6MD  238   2005-02-12   
443-426 4 Randallstown MD BLTMMDSN6MD  238   2003-08-20   
443-426 8 Randallstown MD BLTMMDSN6MD  238   2006-05-05   
443-437 5 Pocomoke MD SLBRMDSBXFX  242   2018-05-14   
443-438 1 Baltimore MD BLTMMDSN6MD  238   2010-01-11   
443-439 2 Trappe MD SLBRMDSBXFX  242   2016-10-16   
443-441 2 Glenwood MD BLTMMDSN6MD  238   2016-10-16   
443-445 2 Elkridge MD BLTMMDSN6MD  238   2006-06-26   
443-448 5 Denton MD SLBRMDSBXFX  242   2016-10-16   
443-450 A Pikesville MD BLTMMDSN6MD  238      
443-450 1 Pikesville MD BLTMMDSN6MD  238   2012-07-29   
443-450 4 Pikesville MD BLTMMDSN6MD  238      
443-453 5 Baltimore MD BLTMMDSN6MD  238   2008-05-16   
443-455 1 Baltimore MD BLTMMDSN6MD  238   2009-10-12   
443-456 7 Edgewood MD BLTMMDSN6MD  238      
443-459 4 Elkridge MD BLTMMDSN6MD  238   2005-08-13   
443-470 8 Towson MD BLTMMDSN6MD  238   2009-08-13   
443-471 8 Pikesville MD BLTMMDSN6MD  238   2007-09-25   
443-472 A Columbia MD BLTMMDSN6MD  238      
443-472 4 Columbia MD BLTMMDSN6MD  238      
443-483 A Cardiff MD BLTMMDSN6MD  238      
443-483 4 Cardiff MD BLTMMDSN6MD  238   2004-02-07   
443-484 A Edgewood MD BLTMMDSN6MD  238      
443-484 4 Edgewood MD BLTMMDSN6MD  238      
443-485 A Elkton MD BLTMMDSN6MD  238      
443-485 5 Elkton MD BLTMMDSN6MD  238   2008-05-16   
443-486 A Prince Frederick MD BLTMMDSN6MD  238      
443-486 7 Prince Frederick MD BLTMMDSN6MD  238   2008-02-13   
443-487 A Westminster MD BLTMMDSN6MD  238      
443-487 4 Westminster MD BLTMMDSN6MD  238   2006-05-05   
443-492 A Elkridge MD   238      
443-492 2 Elkridge MD BLTMMDSN6MD  238   2008-02-12   
443-492 3 Elkridge MD BLTMMDSN6MD  238   2008-02-12   
443-492 5 Elkridge MD BLTMMDSN6MD  238      
443-501 A Pikesville MD   238      
443-501 1 Pikesville MD   238      
443-503 3 Dundalk MD BLTMMDSN6MD  238   2005-02-11   
443-503 4 Dundalk MD BLTMMDSN6MD  238   2003-02-20   
443-505 A Essex MD   238      
443-505 2 Essex MD BLTMMDSN6MD  238   2011-12-24   
443-505 7 Essex MD BLTMMDSN6MD  238   2008-05-16   
443-517 A Glen Burnie MD   238      
443-517 5 Glen Burnie MD BLTMMDSN6MD  238   2008-05-05   

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

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