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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
443-519 A Towson MD   238      
443-519 2 Towson MD BLTMMDSN6MD  238   2004-12-28   
443-536 0 Westminster MD BLTMMDSN6MD  238   2008-12-10   
443-537 1 Columbia MD BLTMMDSN6MD  238   2009-10-25   
443-537 4 Columbia MD BLTMMDSN6MD  238   2009-07-13   
443-539 7 Columbia MD BLTMMDSN6MD  238   2010-02-15   
443-539 8 Columbia MD BLTMMDSN6MD  238   2008-02-13   
443-541 4 Cockeysville MD BLTMMDSN6MD  238   2003-08-20   
443-541 5 Cockeysville MD BLTMMDSN6MD  238   2005-01-10   
443-545 A Columbia MD BLTMMDSN6MD  238      
443-545 1 Columbia MD BLTMMDSN6MD  238      
443-545 2 Columbia MD BLTMMDSN6MD  238      
443-545 3 Columbia MD BLTMMDSN6MD  238      
443-546 9 Columbia MD BLTMMDSN6MD  238   2008-04-24   
443-550 A North Beach MD BLTMMDSN6MD  238      
443-550 8 North Beach MD BLTMMDSN6MD  238   2004-02-07   
443-550 9 North Beach MD BLTMMDSN6MD  238   2005-07-15   
443-551 A Woodlawn MD BLTMMDSN6MD  238      
443-551 4 Woodlawn MD BLTMMDSN6MD  238      
443-552 0 Baltimore MD BLTMMDSN6MD  238   2005-05-16   
443-552 3 Baltimore MD BLTMMDSN6MD  238   2005-05-16   
443-552 4 Baltimore MD BLTMMDSN6MD  238   2005-05-16   
443-552 5 Baltimore MD BLTMMDSN6MD  238   2005-05-16   
443-552 7 Baltimore MD BLTMMDSN6MD  238   2005-05-16   
443-563 1 Baltimore MD BLTMMDSN6MD  238   2007-09-25   
443-564 A Towson MD BLTMMDSN6MD  238      
443-564 4 Towson MD BLTMMDSN6MD  238      
443-566 4 Chesapeake City MD SLBRMDSBXFX  242   2014-02-13   
443-567 A Bel Air MD BLTMMDSN6MD  238      
443-567 4 Bel Air MD BLTMMDSN6MD  238      
443-569 A Annapolis MD BLTMMDSN6MD  238      
443-569 0 Annapolis MD BLTMMDSN6MD  238   2004-12-13   
443-569 3 Annapolis MD BLTMMDSN6MD  238   2005-05-06   
443-569 4 Annapolis MD BLTMMDSN6MD  238      
443-569 5 Annapolis MD BLTMMDSN6MD  238   2005-05-06   
443-569 6 Annapolis MD BLTMMDSN6MD  238   2005-05-06   
443-569 7 Annapolis MD BLTMMDSN6MD  238   2005-05-06   
443-569 8 Annapolis MD BLTMMDSN6MD  238   2005-05-06   
443-577 4 Glen Burnie MD BLTMMDSN6MD  238   2003-02-20   
443-590 A Reisterstown MD   238      
443-590 3 Reisterstown MD BLTMMDSN6MD  238   2006-01-02   
443-594 A Sparrows Point MD   238      
443-594 5 Sparrows Point MD BLTMMDSN6MD  238      
443-602 8 Baltimore MD BLTMMDSN6MD  238   2007-09-11   
443-602 9 Baltimore MD BLTMMDSN6MD  238   2007-12-04   
443-616 2 Bel Air MD BLTMMDSN6MD  238   2008-02-11   
443-620 6 Waterloo MD BLTMMDSN6MD  238   2012-12-01   
443-625 A Fork MD BLTMMDSN6MD  238      
443-625 1 Fork MD BLTMMDSN6MD  238   2001-10-17   
443-627 A Baltimore MD BLTMMDSN6MD  238      

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

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