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: 674

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
989-674 A Unionville MI UNVLMIMNRS0  9323 MICHIGAN BELL TEL CO 344      
989-674 2 Unionville MI   9323 MICHIGAN BELL TEL CO 344      
989-674 3 Unionville MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 344   2006-11-08   
989-674 4 Unionville MI   543C ONVOY, LLCV - MI 344   2012-10-13   
989-674 5 Unionville MI   516C AT&T CORP. 344   2011-09-30   
989-674 6 Unionville MI   508J CENTURYLINK COMMUNICATIONS, LLC 344   2015-05-07   
989-674 7 Unionville MI   543C ONVOY, LLCV - MI 344   2013-04-05   
989-674 8 Unionville MI   9323 MICHIGAN BELL TEL CO 344      

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

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