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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Switch: HGTWMD539MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
227-207 A Bittinger MD 939H COMMIO, LLC 240      
227-208 A Flintstone MD 939H COMMIO, LLC 240      
227-209 A Grantsville MD 939H COMMIO, LLC 240      
227-210 A McCoole MD 939H COMMIO, LLC 240      
227-212 A Westernport MD 939H COMMIO, LLC 240      
227-221 A Smithsburg MD 939H COMMIO, LLC 240   2024-01-25   
227-223 A Frederick MD 939H COMMIO, LLC 240   2024-01-22   
240-878 A Hagerstown MD 939H COMMIO, LLC 240      
240-969 A Walkersville MD 939H COMMIO, LLC 240      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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