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: SLBRMD901MD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
667-457 4 Church Hill MD 939H COMMIO, LLC 242   2024-01-25   
667-459 A Oxford MD 939H COMMIO, LLC 242   2024-01-25   
667-459 0 Oxford MD 939H COMMIO, LLC 242   2024-01-25   
667-459 1 Oxford MD 939H COMMIO, LLC 242   2024-01-25   
667-459 2 Oxford MD 939H COMMIO, LLC 242   2024-01-25   
667-459 3 Oxford MD 939H COMMIO, LLC 242   2024-01-25   
667-459 4 Oxford MD 939H COMMIO, LLC 242   2024-01-25   
667-467 0 Denton MD 939H COMMIO, LLC 242   2022-11-07   
667-566 8 Stevensville MD 939H COMMIO, LLC 242   2023-12-21   
667-566 9 Stevensville MD 939H COMMIO, LLC 242   2023-12-21   
667-663 0 Ocean City MD 939H COMMIO, LLC 242   2022-11-07   
667-664 0 Trappe MD 939H COMMIO, LLC 242   2022-11-07   
667-687 0 Warwick MD 939H COMMIO, LLC 242   2022-03-27   
667-827 0 Berlin MD 939H COMMIO, LLC 242   2022-08-21   

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Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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