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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Edgewood, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
667-824 4   876D ONVOY, LLC - MD 238   2023-08-10   
667-824 5   876D ONVOY, LLC - MD 238   2023-08-10   
667-824 6   876D ONVOY, LLC - MD 238   2023-08-10   
667-824 7   876D ONVOY, LLC - MD 238   2023-08-10   
667-824 8   876D ONVOY, LLC - MD 238   2023-08-10   
667-824 9   876D ONVOY, LLC - MD 238   2023-08-10   

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

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