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: NRSHMIXGRS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
231-780 A Muskegon MI 0695 FRONTIER NORTH, INC. - MI 348      
231-780 0 Muskegon MI 0695 FRONTIER NORTH, INC. - MI 348      
231-780 1 Muskegon MI 0695 FRONTIER NORTH, INC. - MI 348      
231-780 2 Muskegon MI 0695 FRONTIER NORTH, INC. - MI 348      
231-780 3 Muskegon MI 0695 FRONTIER NORTH, INC. - MI 348      
231-780 4 Muskegon MI 0695 FRONTIER NORTH, INC. - MI 348      
231-780 5 Muskegon MI 0695 FRONTIER NORTH, INC. - MI 348      
231-780 6 Muskegon MI 0695 FRONTIER NORTH, INC. - MI 348      
231-780 9 Muskegon MI 0695 FRONTIER NORTH, INC. - MI 348      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.