Local Calling Guide

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Switch: BLTMMDSN6MD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
240-345 A Ashton (Baltimore LATA) MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
240-345 1 Ashton (Baltimore LATA) MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2011-09-02   
240-345 3 Ashton (Baltimore LATA) MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-08-11   
240-345 9 Ashton (Baltimore LATA) MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-07-18   
240-512 7 Washington Zone 13 (Baltimore LATA) MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2014-06-25   
240-565 0 Laurel (Baltimore LATA) MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-08-11   
240-708 A Laurel (Baltimore LATA) MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
240-708 8 Laurel (Baltimore LATA) MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2012-12-01   
240-759 6 Washington Zone 15 (Baltimore LATA) MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2022-10-27   
240-865 A Washington Zone 14 (Baltimore LATA) MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
240-865 4 Washington Zone 14 (Baltimore LATA) MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-08-11   
410-214 5 Rising Sun MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2023-07-14   
410-216 3 Annapolis MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2015-04-17   
410-246 4 Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2010-08-09   
410-286 1 North Beach MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2005-07-15   
410-291 2 Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2017-11-10   
410-305 7 Odenton MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2009-10-09   
410-317 8 Armiger-Gibson Island MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-05-08   
410-319 2 Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2019-02-02   
410-343 7 Sparks-Glencoe MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-03-05   
410-344 2 Chase MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-03-13   
410-344 5 Chase MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2003-06-08   
410-344 7 Chase MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-01-02   
410-346 2 Silver Run MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2011-07-08   
410-346 5 Silver Run MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-03-05   
410-372 4 Towson MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
410-384 3 Severna Park MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2002-11-30   
410-384 4 Severna Park MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-02-15   
410-394 5 Solomons MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2011-12-02   
410-394 8 Solomons MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-05-16   
410-394 9 Solomons MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-03-05   
410-412 3 Glen Burnie MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-05-08   
410-415 1 Pikesville MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-12-10   
410-417 5 Edgewood MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-01-29   
410-424 0 Glen Burnie MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-04-30   
410-452 7 Cardiff MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-01-02   
410-457 7 Darlington MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-03-03   
410-469 6 Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2014-07-20   
410-469 7 Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2014-07-20   
410-472 5 Sparks-Glencoe MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2011-04-03   
410-501 5 Arbutus MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2005-12-23   
410-501 6 Arbutus MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2005-12-23   
410-504 1 Pikesville MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2005-10-23   
410-504 6 Pikesville MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2005-10-23   
410-505 4 Ellicott City MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2003-02-20   
410-505 5 Ellicott City MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2002-07-21   
410-505 8 Ellicott City MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2004-11-22   
410-512 6 Towson MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-07-10   
410-514 5 Severn MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2005-10-23   
410-514 6 Severn MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-05-26   

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Last updated: Sat, 02 May 2026 12:20:53 UTC

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