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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
443-333 4 Annapolis MD BLTMMDSN6MD  238   2011-11-09   
443-334 8 Pikesville MD BLTMMDSN6MD  238   2007-12-04   
443-341 A Catonsville MD BLTMMDSN6MD  238      
443-341 0 Catonsville MD BLTMMDSN6MD  238      
443-341 1 Catonsville MD BLTMMDSN6MD  238      
443-341 4 Catonsville MD BLTMMDSN6MD  238   2003-02-20   
443-341 5 Catonsville MD BLTMMDSN6MD  238   2004-12-27   
443-341 9 Catonsville MD BLTMMDSN6MD  238      
443-343 0 Millersville MD BLTMMDSN6MD  238   2006-04-07   
443-345 A Aberdeen MD BLTMMDSN6MD  236      
443-345 1 Aberdeen MD BLTMMDSN6MD  236   2005-05-14   
443-345 2 Aberdeen MD BLTMMDSN6MD  236   2005-05-14   
443-345 4 Aberdeen MD BLTMMDSN6MD  236      
443-345 5 Aberdeen MD BLTMMDSN6MD  236   2010-11-01   
443-348 8 Woodlawn MD BLTMMDSN6MD  238   2008-05-16   
443-352 A Pikesville MD BLTMMDSN6MD  238      
443-352 0 Pikesville MD BLTMMDSN6MD  238   2007-09-11   
443-352 7 Pikesville MD BLTMMDSN6MD  238      
443-354 A Glen Burnie MD BLTMMDSN6MD  238      
443-354 4 Glen Burnie MD BLTMMDSN6MD  238      
443-355 A Ellicott City MD BLTMMDSN6MD  238      
443-355 4 Ellicott City MD BLTMMDSN6MD  238      
443-356 A Bel Air MD BLTMMDSN6MD  238      
443-356 4 Bel Air MD BLTMMDSN6MD  238      
443-364 2 Ellicott City MD BLTMMDSN6MD  238   2007-05-23   
443-364 9 Ellicott City MD BLTMMDSN6MD  238   2007-07-27   
443-365 2 Salisbury MD SLBRMDSBXFX  242   2008-03-13   
443-367 9 Columbia MD BLTMMDSN6MD  238   2011-04-03   
443-371 A Bel Air MD BLTMMDSN6MD  238      
443-371 0 Bel Air MD BLTMMDSN6MD  238   2006-03-26   
443-371 9 Bel Air MD BLTMMDSN6MD  238   2008-02-01   
443-380 A Woodlawn MD BLTMMDSN6MD  238      
443-380 2 Woodlawn MD BLTMMDSN6MD  238   2005-02-10   
443-380 4 Woodlawn MD BLTMMDSN6MD  238   2006-05-05   
443-391 A Cockeysville MD   238   2025-04-04   
443-391 5 Cockeysville MD BLTMMDSN6MD  238      
443-393 A Columbia MD   238      
443-393 2 Columbia MD BLTMMDSN6MD  238   2005-09-10   
443-393 3 Columbia MD BLTMMDSN6MD  238   2005-09-10   
443-393 4 Columbia MD   238      
443-393 5 Columbia MD   238      
443-393 6 Columbia MD BLTMMDSN6MD  238   2006-05-08   
443-393 7 Columbia MD BLTMMDSN6MD  238   2011-04-03   
443-393 8 Columbia MD BLTMMDSN6MD  238      
443-393 9 Columbia MD BLTMMDSN6MD  238      
443-396 A Odenton MD   238      
443-396 1 Odenton MD   238      
443-397 9 Salisbury MD SLBRMDSBXFX  242   2010-03-28   
443-403 A Aberdeen MD BLTMMDSN6MD  236      
443-403 0 Aberdeen MD BLTMMDSN6MD  236      

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

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