Local Calling Guide

Area code/prefix search

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

NXX: 788

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
989-788 A Sixty Lakes MI SGNWMIFAXKX  543C ONVOY, LLCV - MI 344      
989-788 2 Sixty Lakes MI   543C ONVOY, LLCV - MI 344   2023-04-22   
989-788 3 Sixty Lakes MI   624H ONVOY SPECTRUM, LLC 344   2024-08-11   
989-788 6 Sixty Lakes MI   543C ONVOY, LLCV - MI 344   2021-03-11   
989-788 7 Sixty Lakes MI   543C ONVOY, LLCV - MI 344   2021-03-11   
989-788 8 Sixty Lakes MI   543C ONVOY, LLCV - MI 344   2021-03-11   
989-788 9 Sixty Lakes MI   543C ONVOY, LLCV - MI 344   2023-08-26   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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