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.

NPA: 989 [Rate centres in NPA 989] [Dial plan for NPA 989]

NXX: 557

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
989-557 A Higgins Lake MI SGNWMIFAXKX  543C ONVOY, LLCV - MI 344      
989-557 2 Higgins Lake MI ALMAMIXGOMD  624H ONVOY SPECTRUM, LLC 344   2023-05-30   
989-557 5 Higgins Lake MI SGNWMIFAXKX  543C ONVOY, LLCV - MI 344   2021-03-11   
989-557 6 Higgins Lake MI SGNWMIFAXKX  543C ONVOY, LLCV - MI 344   2021-03-11   
989-557 7 Higgins Lake MI SGNWMIFAXKX  543C ONVOY, LLCV - MI 344   2021-03-11   
989-557 8 Higgins Lake MI SGNWMIFAXKX  543C ONVOY, LLCV - MI 344   2021-03-11   
989-557 9 Higgins Lake MI ALMAMIXGFMD  543C ONVOY, LLCV - MI 344   2023-08-26   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.