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: 768

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
989-768 A Port Austin MI SGNWMIATUMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 344      
989-768 0 Port Austin MI SGNWMIATUMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 344      
989-768 3 Port Austin MI SGNWMIFAXNX  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 344   2018-10-26   
989-768 4 Port Austin MI SGNWMIECXQX  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 344   2015-05-06   
989-768 7 Port Austin MI SGNWMIFAXKX  543C ONVOY, LLCV - MI 344   2020-11-27   
989-768 8 Port Austin MI SGNWMIFAXKX  543C ONVOY, LLCV - MI 344   2020-11-27   
989-768 9 Port Austin MI SGNWMIFAXKX  543C ONVOY, LLCV - MI 344   2018-10-20   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.