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: BLTQMD01GMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
667-495 A Baltimore MD 616J LEAP TELECOM, LLC 238   2024-12-28   
667-495 0 Baltimore MD 616J LEAP TELECOM, LLC 238   2024-12-28   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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