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: HGPTMIXLRS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
989-422 A Houghton Lake MI 0695 FRONTIER NORTH, INC. - MI 344      
989-422 2 Houghton Lake MI 0695 FRONTIER NORTH, INC. - MI 344      
989-422 3 Houghton Lake MI 0695 FRONTIER NORTH, INC. - MI 344      
989-422 4 Houghton Lake MI 0695 FRONTIER NORTH, INC. - MI 344      
989-422 5 Houghton Lake MI 0695 FRONTIER NORTH, INC. - MI 344      
989-422 6 Houghton Lake MI 0695 FRONTIER NORTH, INC. - MI 344      
989-422 7 Houghton Lake MI 0695 FRONTIER NORTH, INC. - MI 344      

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.