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: SOHNMIXHDS0

Remotes:

Switch Switch name Switch type
CVRTMIXGRS0  COVERT  GTR 
GDJTMIXGRS0  GRAND JUNCTION  GTR 
GLNNMIXIRS0  GLENN  GTR 
LCTAMIXIRL0  LACOTA  GTR 
PLMNMIXIRS0  PULLMAN  GTR 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
269-637 A South Haven MI 0695 FRONTIER NORTH, INC. - MI 348      
269-639 A South Haven MI 0695 FRONTIER NORTH, INC. - MI 348      

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

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