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: 836G SHENTEL COMMUNICATIONS, LLC. - MD

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
240-488 A Oakland MD CMLDMDCM2MD  240      
240-488 1 Oakland MD   240   2012-07-14   
240-591 A Hagerstown MD FRDRMDFRXQX  240      
240-591 1 Hagerstown MD   240   2018-06-16   
240-657 8 Frostburg MD   240   2020-10-22   
240-738 1 Hancock MD   240   2020-10-22   
240-739 5 Frederick MD   240   2021-07-23   
301-338 9 Cumberland MD   240   2014-06-02   
301-453 1 Kitzmiller MD   240   2012-07-14   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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