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: ALPEMIXGDS0

Remotes:

Switch Switch name Switch type
HLMNMIXGRS0  HILLMAN  GTR 
LCHNMIXGRS0  LACHINE  GTR 
LLALMIXGRS0  LONG LAKE  GTR 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
989-354 A Alpena MI 0695 FRONTIER NORTH, INC. - MI 344      
989-356 A Alpena MI 0695 FRONTIER NORTH, INC. - MI 344      
989-358 A Alpena MI 0695 FRONTIER NORTH, INC. - MI 344      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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