Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 989 [Rate centres in NPA 989] [Dial plan for NPA 989]

NXX: 406

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
989-406 A Fairview MI OWTPMI022MD  792K CHARTER IP ENABLED SERVICES, LLC 344      
989-406 0 Fairview MI OWTPMI022MD  792K CHARTER IP ENABLED SERVICES, LLC 344   2021-06-27   
989-406 4 Fairview MI ALMAMIXGOMD  624H ONVOY SPECTRUM, LLC 344   2023-05-30   

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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