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: 566

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
989-566 A Mayville MI SGNWMIACEMD  516J TON80 COMMUNICATIONS, LLC 344      
989-566 0 Mayville MI   543C ONVOY, LLCV - MI 344   2023-08-26   
989-566 1 Mayville MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 344   2026-01-11   
989-566 2 Mayville MI   624H ONVOY SPECTRUM, LLC 344   2024-08-11   
989-566 6 Mayville MI   516J TON80 COMMUNICATIONS, LLC 344   2022-04-23   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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