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: 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   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 344      
989-768 1 Port Austin MI   145J TERRA NOVA TELECOM INC. 344   2025-06-05   
989-768 2 Port Austin MI   624H ONVOY SPECTRUM, LLC 344   2024-08-11   
989-768 3 Port Austin MI   770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 344   2018-10-26   
989-768 4 Port Austin MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 344   2015-05-06   
989-768 7 Port Austin MI   543C ONVOY, LLCV - MI 344   2020-11-27   
989-768 8 Port Austin MI   543C ONVOY, LLCV - MI 344   2020-11-27   
989-768 9 Port Austin MI   543C ONVOY, LLCV - MI 344   2018-10-20   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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