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: HWCYMIXGDS0

Remotes:

Switch Switch name Switch type
STWDMIXGRS0  STANWOOD  GTR 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
231-937 A Howard City MI 0695 FRONTIER NORTH, INC. - MI 348      
231-937 4 Howard City MI 0695 FRONTIER NORTH, INC. - MI 348      
231-937 5 Howard City MI 0695 FRONTIER NORTH, INC. - MI 348      
231-937 6 Howard City MI 0695 FRONTIER NORTH, INC. - MI 348      
231-937 7 Howard City MI 0695 FRONTIER NORTH, INC. - MI 348      
231-937 8 Howard City MI 0695 FRONTIER NORTH, INC. - MI 348      
231-937 9 Howard City MI 0695 FRONTIER NORTH, INC. - MI 348      

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.