Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
443-219 4 Parkville MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2003-02-20   
443-219 5 Parkville MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2012-03-10   
443-219 9 Parkville MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-221 A Annapolis MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-221 2 Annapolis MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2010-08-01   
443-221 4 Annapolis MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-221 6 Annapolis MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2014-01-24   
443-228 5 Chase MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-05-26   
443-231 0 Essex MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2005-02-11   
443-231 3 Essex MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-04-24   
443-231 4 Essex MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2003-02-20   
443-244 A Westminster MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-244 4 Westminster MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-244 9 Westminster MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2005-02-14   
443-267 5 Darlington MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2012-12-23   
443-269 8 Towson MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2018-09-22   
443-274 0 Severn MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-02-27   
443-275 0 Towson MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2013-01-19   
443-275 5 Towson MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2010-11-20   
443-275 9 Towson MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-02-13   
443-280 6 Sykesville MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-06-26   
443-291 3 Hampstead MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-09-09   
443-291 7 Hampstead MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-03-03   
443-292 A Crofton MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-292 5 Crofton MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-01-25   
443-295 A Prince Frederick MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-295 4 Prince Frederick MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-295 6 Prince Frederick MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2005-03-04   
443-295 9 Prince Frederick MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-02-13   
443-296 3 Waterloo MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-01-02   
443-300 A Sykesville MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-300 2 Sykesville MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-302 7 Crofton MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-02-12   
443-303 2 Aberdeen MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2004-11-22   
443-303 5 Aberdeen MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
443-305 3 Armiger-Gibson Island MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-05-08   
443-305 6 Armiger-Gibson Island MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-05-16   
443-307 8 Bel Air MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-312 2 Brooklyn Park-Linthicum MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-01-02   
443-312 7 Brooklyn Park-Linthicum MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2005-08-05   
443-313 5 Fork MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-316 5 Woodlawn MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-316 6 Woodlawn MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-318 2 Cockeysville MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2020-07-10   
443-318 7 Cockeysville MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2007-12-04   
443-320 4 Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-320 5 Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-333 4 Annapolis MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2011-11-09   
443-334 8 Pikesville MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2007-12-04   
443-341 A Catonsville MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      

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

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