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OCN: 7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
240-292 5 Washington Zone 11 MD LARLMDCCAMD  236   2009-05-14   
240-552 8 Washington Zone 10 MD LARLMDCCAMD  236   2015-02-16   
240-612 A Washington Zone 5 MD LARLMDCCAMD  236      
240-612 0 Washington Zone 5 MD LARLMDCCAMD  236   2010-10-02   
240-612 1 Washington Zone 5 MD LARLMDCCAMD  236   2010-10-02   
240-612 2 Washington Zone 5 MD LARLMDCCAMD  236   2010-10-02   
240-612 3 Washington Zone 5 MD LARLMDCCAMD  236   2010-10-02   
240-612 4 Washington Zone 5 MD LARLMDCCAMD  236   2010-10-02   
240-612 5 Washington Zone 5 MD LARLMDCCAMD  236   2010-10-02   
240-612 6 Washington Zone 5 MD LARLMDCCAMD  236   2010-10-02   
240-612 7 Washington Zone 5 MD LARLMDCCAMD  236   2010-10-02   
240-612 8 Washington Zone 5 MD LARLMDCCAMD  236   2010-10-02   
240-612 9 Washington Zone 5 MD LARLMDCCAMD  236   2010-10-02   
240-630 6 Washington Zone 2 MD LARLMDCCAMD  236   2013-12-02   
240-802 3 Washington Zone 2 MD LARLMDCCAMD  236   2016-03-16   
240-802 4 Washington Zone 2 MD LARLMDCCAMD  236   2015-03-04   
240-848 9 Gaithersburg MD LARLMDCCAMD  236   2011-10-04   
240-857 A Washington Zone 5 MD LARLMDCCAMD  236      
240-863 A Washington Zone 3 MD LARLMDCCAMD  236      
240-863 0 Washington Zone 3 MD LARLMDCCAMD  236      
301-260 4 Ashton MD LARLMDCCAMD  236   2006-05-28   
301-288 2 Washington Zone 12 MD LARLMDCCAMD  236   2006-05-28   
301-323 A Laurel MD LARLMDCCAMD  236      
301-323 0 Laurel MD LARLMDCCAMD  236      
301-323 1 Laurel MD LARLMDCCAMD  236      
301-323 2 Laurel MD LARLMDCCAMD  236      
301-323 4 Laurel MD LARLMDCCAMD  236      
301-323 6 Laurel MD LARLMDCCAMD  236      
301-323 7 Laurel MD LARLMDCCAMD  236      
301-323 9 Laurel MD LARLMDCCAMD  236      
301-339 6 Washington Zone 10 MD LARLMDCCAMD  236   2012-03-02   
301-361 A Washington Zone 4 MD LARLMDCCAMD  236      
301-389 A Washington Zone 13 MD LARLMDCCAMD  236      
301-389 0 Washington Zone 13 MD LARLMDCCAMD  236      
301-389 1 Washington Zone 13 MD LARLMDCCAMD  236      
301-389 4 Washington Zone 13 MD LARLMDCCAMD  236      
301-389 7 Washington Zone 13 MD LARLMDCCAMD  236      
301-389 8 Washington Zone 13 MD LARLMDCCAMD  236      
301-389 9 Washington Zone 13 MD LARLMDCCAMD  236      
301-532 4 Laurel (Baltimore LATA) MD BLTMMDSNNMD  238   2016-04-21   
301-756 A Washington Zone 14 MD LARLMDCCAMD  236      
301-756 0 Washington Zone 14 MD LARLMDCCAMD  236      
301-756 3 Washington Zone 14 MD LARLMDCCAMD  236      
301-756 4 Washington Zone 14 MD LARLMDCCAMD  236      
301-756 7 Washington Zone 14 MD LARLMDCCAMD  236      
301-756 8 Washington Zone 14 MD LARLMDCCAMD  236      
301-756 9 Washington Zone 14 MD LARLMDCCAMD  236      
301-836 4 Washington Zone 5 MD LARLMDCCAMD  236   2010-12-22   
301-968 8 Washington Zone 2 MD LARLMDCCAMD  236   2010-07-22   
301-981 A Washington Zone 5 MD LARLMDCCAMD  236      
410-369 A Baltimore MD BLTMMDSNNMD  238      
410-369 0 Baltimore MD BLTMMDSNNMD  238      
410-369 1 Baltimore MD BLTMMDSNNMD  238      
410-369 2 Baltimore MD BLTMMDSNNMD  238      
410-369 3 Baltimore MD BLTMMDSNNMD  238      
410-369 4 Baltimore MD BLTMMDSNNMD  238      
410-369 5 Baltimore MD BLTMMDSNNMD  238      
410-369 7 Baltimore MD BLTMMDSNNMD  238      
410-369 9 Baltimore MD BLTMMDSNNMD  238      
410-406 3 Essex MD BLTMMDSNNMD  238   2006-06-01   
410-565 A Arbutus MD BLTMMDSNNMD  238      
410-565 0 Arbutus MD BLTMMDSNNMD  238      
410-565 1 Arbutus MD BLTMMDSNNMD  238      
410-565 3 Arbutus MD BLTMMDSNNMD  238      
410-565 4 Arbutus MD BLTMMDSNNMD  238      
410-565 7 Arbutus MD BLTMMDSNNMD  238      
410-565 9 Arbutus MD BLTMMDSNNMD  238      
410-589 A Brooklyn Park-Linthicum MD BLTMMDSNNMD  238      
410-589 1 Brooklyn Park-Linthicum MD BLTMMDSNNMD  238      
410-589 4 Brooklyn Park-Linthicum MD BLTMMDSNNMD  238      
410-589 7 Brooklyn Park-Linthicum MD BLTMMDSNNMD  238      
410-589 8 Brooklyn Park-Linthicum MD BLTMMDSNNMD  238      
410-589 9 Brooklyn Park-Linthicum MD BLTMMDSNNMD  238      
410-595 A Glen Burnie MD BLTMMDSNNMD  238      
410-595 0 Glen Burnie MD BLTMMDSNNMD  238      
410-595 3 Glen Burnie MD BLTMMDSNNMD  238      
410-595 4 Glen Burnie MD BLTMMDSNNMD  238      
410-595 7 Glen Burnie MD BLTMMDSNNMD  238      
410-595 8 Glen Burnie MD BLTMMDSNNMD  238      
410-595 9 Glen Burnie MD BLTMMDSNNMD  238      
410-645 5 Woodlawn MD BLTMMDSNNMD  238   2006-06-01   
410-650 7 Dundalk MD BLTMMDSNNMD  238   2006-06-01   
410-680 A Ellicott City MD BLTMMDSNNMD  238      
410-680 0 Ellicott City MD BLTMMDSNNMD  238      
410-680 1 Ellicott City MD BLTMMDSNNMD  238      
410-680 4 Ellicott City MD BLTMMDSNNMD  238      
410-680 5 Ellicott City MD BLTMMDSNNMD  238      
410-680 7 Ellicott City MD BLTMMDSNNMD  238      
410-680 9 Ellicott City MD BLTMMDSNNMD  238      
410-717 A Elkridge MD BLTMMDSNNMD  238      
410-717 0 Elkridge MD BLTMMDSNNMD  238      
410-717 1 Elkridge MD BLTMMDSNNMD  238      
410-717 4 Elkridge MD BLTMMDSNNMD  238      
410-717 7 Elkridge MD BLTMMDSNNMD  238      
410-717 9 Elkridge MD BLTMMDSNNMD  238      
410-741 4 West River MD BLTMMDSNNMD  238   2013-01-11   
410-794 A Columbia MD BLTMMDSNNMD  238      
410-794 0 Columbia MD BLTMMDSNNMD  238      
410-794 1 Columbia MD BLTMMDSNNMD  238      
410-794 2 Columbia MD BLTMMDSNNMD  238      

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Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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