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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

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 CMLDMDCM2MD  240   2012-07-14   
240-591 A Hagerstown MD FRDRMDFRXQX  240      
240-591 1 Hagerstown MD FRDRMDFRXQX  240   2018-06-16   
240-657 8 Frostburg MD CMLDMDCM2MD  240   2020-10-22   
240-738 1 Hancock MD CMLDMDCM2MD  240   2020-10-22   
240-739 5 Frederick MD CMLDMDCM2MD  240   2021-07-23   
301-338 9 Cumberland MD CMLDMDCM2MD  240   2014-06-02   
301-453 1 Kitzmiller MD CMLDMDCM2MD  240   2012-07-14   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.