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: HRBHMIXGDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
989-479 A Harbor Beach MI 0695 FRONTIER NORTH, INC. - MI 344      
989-479 0 Harbor Beach MI 0695 FRONTIER NORTH, INC. - MI 344      
989-479 3 Harbor Beach MI 0695 FRONTIER NORTH, INC. - MI 344      
989-479 5 Harbor Beach MI 0695 FRONTIER NORTH, INC. - MI 344      
989-479 6 Harbor Beach MI 0695 FRONTIER NORTH, INC. - MI 344      
989-479 9 Harbor Beach MI 0695 FRONTIER NORTH, INC. - MI 344      

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

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