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
240-527 0 Hagerstown MD   240   2005-09-15   
240-527 3 Hagerstown MD   240   2005-08-19   
240-528 0 Hughesville MD   236   2006-02-17   
240-528 1 Hughesville MD   236   2009-03-18   
240-533 1 Washington Zone 3 MD   236   2005-07-18   
240-533 6 Washington Zone 3 MD   236   2005-07-08   
240-534 8 Washington Zone 2 MD   236   2016-07-14   
240-543 0 Washington Zone 2 MD   236   2006-10-30   
240-543 1 Washington Zone 2 MD   236   2006-12-04   
240-543 2 Washington Zone 2 MD   236   2007-10-09   
240-544 8 Washington Zone 14 MD   236   2014-02-09   
240-547 7 Laurel MD   236   2008-08-18   
240-547 8 Laurel MD   236   2008-11-15   
240-548 7 Washington Zone 14 MD   236   2014-12-13   
240-548 8 Washington Zone 14 MD   236   2016-04-30   
240-549 0 Frederick MD   240   2016-07-14   
240-549 1 Frederick MD   240   2016-12-09   
240-556 8 Washington Zone 14 MD   236   2015-08-14   
240-557 A Washington Zone 6 MD   236   2017-05-11   
240-557 9 Washington Zone 6 MD   236   2017-05-11   
240-559 4 Ashton MD   236   2015-10-09   
240-559 6 Ashton MD   236   2015-10-09   
240-559 7 Ashton MD   236   2012-07-20   
240-559 8 Ashton MD   236   2012-07-20   
240-564 A Laurel MD   236   2019-02-23   
240-564 7 Laurel MD   236   2019-10-07   
240-564 8 Laurel MD   236   2019-11-04   
240-564 9 Laurel MD   236   2019-02-23   
240-565 A Laurel (Baltimore LATA) MD BLTMMDCH40Z  238   2006-02-13   
240-565 7 Laurel (Baltimore LATA) MD   238   2006-02-13   
240-565 8 Laurel (Baltimore LATA) MD   238   2007-01-15   
240-565 9 Laurel (Baltimore LATA) MD   238   2006-02-13   
240-575 0 Frederick MD   240   2007-06-16   
240-579 A Ashton MD   236   2018-03-12   
240-579 0 Ashton MD   236   2018-09-20   
240-579 1 Ashton MD   236   2018-09-20   
240-579 2 Ashton MD   236   2018-10-22   
240-579 3 Ashton MD   236   2019-01-12   
240-579 4 Ashton MD   236   2018-04-20   
240-579 5 Ashton MD   236   2018-04-20   
240-579 6 Ashton MD   236   2020-04-16   
240-579 7 Ashton MD   236   2020-04-16   
240-579 8 Ashton MD   236   2018-03-12   
240-579 9 Ashton MD   236   2018-03-12   
240-581 0 Laurel MD   236   2005-12-03   
240-581 2 Laurel MD   236   2008-02-04   
240-584 A Laurel MD   236   2018-02-25   
240-584 1 Laurel MD   236   2018-12-07   
240-584 2 Laurel MD   236   2018-09-20   
240-584 3 Laurel MD   236   2018-10-22   

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

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