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: LNNGMIMNXFZ

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
517-356 A Lansing MI 965H FRACTEL, LLC 346      
517-758 A Holt MI 965H FRACTEL, LLC 346      
517-786 A Charlotte MI 965H FRACTEL, LLC 346      
517-800 A Jackson MI 965H FRACTEL, LLC 346      
517-842 A Grass Lake MI 965H FRACTEL, LLC 346      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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