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: CDWRMIXGDS0

Remotes:

Switch Switch name Switch type
BRSNMIXGRS0  BRONSON  GTR 
BURLMIXIRS0  BURLINGTON  SLC5 
CDWLMIXGRS0  COLDWATER LAKE  GTR 
QNCYMIXGRS0  QUINCY  GTR 
TKNSMIXIRS0  TEKONSHA  GTR 
UNCYMIXGRS0  UNION CITY  GTR 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
517-278 A Coldwater MI 0695 FRONTIER NORTH, INC. - MI 348      
517-279 A Coldwater MI 0695 FRONTIER NORTH, INC. - MI 348      

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

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