Local Calling Guide

Area code/prefix search

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Unionville, MI

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
989-674 A UNVLMIMNRS0  9323 MICHIGAN BELL TEL CO 344      
989-674 2   9323 MICHIGAN BELL TEL CO 344      
989-674 3   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 344   2006-11-08   
989-674 4   543C ONVOY, LLCV - MI 344   2012-10-13   
989-674 5   516C AT&T CORP. 344   2011-09-30   
989-674 6   508J CENTURYLINK COMMUNICATIONS, LLC 344   2015-05-07   
989-674 7   543C ONVOY, LLCV - MI 344   2013-04-05   
989-674 8   9323 MICHIGAN BELL TEL CO 344      
989-918 A UNVLMIMNRS0  9323 MICHIGAN BELL TEL CO 344      
989-918 0   9323 MICHIGAN BELL TEL CO 344      
989-918 1   543C ONVOY, LLCV - MI 344   2016-03-28   
989-918 2   543C ONVOY, LLCV - MI 344   2016-03-28   
989-918 3   991E BANDWIDTH.COM CLEC, LLC - MI 344   2022-02-12   
989-918 4   624H ONVOY SPECTRUM, LLC 344   2024-08-11   
989-918 6   933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 344   2016-04-02   

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

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