Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
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OCN: 6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
304-707 7 Martinsburg WV   240   2008-09-07   
304-707 8 Martinsburg WV   240   2008-09-07   
304-901 0 Martinsburg WV   240   2015-01-31   
304-901 8 Martinsburg WV   240   2016-04-30   
410-297 1 Aberdeen MD   236   2016-02-06   
410-306 5 Aberdeen MD   236   2013-05-20   
410-318 9 Baltimore MD   238   2004-08-29   
410-344 3 Chase MD   238   2014-05-30   
410-369 6 Baltimore MD   238   2006-01-13   
410-369 8 Baltimore MD   238   2006-01-13   
410-412 0 Glen Burnie MD   238   2007-09-09   
410-412 4 Glen Burnie MD   238   2007-03-11   
410-412 6 Glen Burnie MD   238   2007-04-23   
410-413 0 Pikesville MD   238   2014-05-30   
410-424 8 Glen Burnie MD   238   2015-10-09   
410-424 9 Glen Burnie MD   238   2015-10-09   
410-469 0 Baltimore MD   238   2008-04-01   
410-497 2 Parkville MD   238   2008-08-18   
410-497 4 Parkville MD   238   2009-02-12   
410-522 8 Baltimore MD   238   2005-09-15   
410-528 3 Baltimore MD   238   2005-09-15   
410-537 0 Baltimore MD   238   2005-09-23   
410-684 9 Glen Burnie MD   238   2016-08-15   
410-689 5 Glen Burnie MD   238   2008-06-16   
410-689 8 Glen Burnie MD   238   2007-11-15   
410-694 1 Glen Burnie MD   238   2016-08-15   
410-710 A Baltimore MD BLTMMDCH40Z  238   2005-11-24   
410-710 7 Baltimore MD   238   2006-02-03   
410-710 8 Baltimore MD   238   2006-02-03   
410-710 9 Baltimore MD   238   2005-11-24   
410-762 8 Glen Burnie MD   238   2015-01-31   
410-762 9 Glen Burnie MD   238   2015-01-31   
410-800 3 Baltimore MD   238   2005-11-07   
410-814 1 Baltimore MD   238   2005-12-23   
410-814 8 Baltimore MD   238   2006-02-03   
410-814 9 Baltimore MD   238   2006-02-03   
410-831 A Salisbury MD   242      
410-831 0 Salisbury MD   242   2015-12-21   
410-831 1 Salisbury MD   242   2015-12-21   
410-831 8 Salisbury MD   242   2014-11-08   
410-831 9 Salisbury MD   242   2014-11-08   
410-855 0 Glen Burnie MD   238   2016-08-15   
410-865 9 Glen Burnie MD   238   2008-07-17   
410-892 0 Glen Burnie MD   238   2016-08-15   
410-900 0 Baltimore MD   238   2005-02-25   
410-900 2 Baltimore MD   238   2005-02-25   
410-900 3 Baltimore MD   238   2005-06-06   
410-900 4 Baltimore MD   238   2005-01-19   
410-900 5 Baltimore MD   238   2005-01-19   
410-900 6 Baltimore MD   238   2005-01-21   

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Last updated: Thu, 10 Sep 2020 02:15:24 UTC

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