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.

Switch: HGTWMD539MD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
240-910 4 Frederick MD 939H COMMIO, LLC 240   2021-07-17   
240-916 0 Cumberland MD 939H COMMIO, LLC 240   2022-08-22   
240-924 9 Mount Airy MD 939H COMMIO, LLC 240   2022-11-17   
240-934 1 Middletown MD 939H COMMIO, LLC 240   2022-12-03   
240-969 A Walkersville MD 939H COMMIO, LLC 240      
240-969 0 Walkersville MD 939H COMMIO, LLC 240   2023-01-06   
240-969 1 Walkersville MD 939H COMMIO, LLC 240   2023-01-06   
681-283 6 Martinsburg WV 939H COMMIO, LLC 240   2022-08-22   
681-900 4 Hedgesville WV 939H COMMIO, LLC 240   2022-08-22   

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Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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