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: MSKGMIXNDS0

Remotes:

Switch Switch name Switch type
CNKLMIXGRS0  CONKLIN  GTR 
CPVLMIXGRS0  COOPERSVILLE  GTR 
FRPRMIXGRS0  FRUITPORT  GTR 
RVNNMIXGRS0  RAVENNA  GTR 
WLKMMIXGRS0  WOLF LAKE  GTR 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
231-767 A Muskegon MI 0695 FRONTIER NORTH, INC. - MI 348      
231-773 A Muskegon MI 0695 FRONTIER NORTH, INC. - MI 348      
231-777 A Muskegon MI 0695 FRONTIER NORTH, INC. - MI 348      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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