Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Hemlock, MI

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
989-301 A SGNWMIECXQX  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 344      
989-301 0   792K CHARTER IP ENABLED SERVICES, LLC 344   2007-03-18   
989-301 1   543C ONVOY, LLCV - MI 344   2013-03-15   
989-301 2   543C ONVOY, LLCV - MI 344   2017-05-19   
989-301 3   770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 344   2015-05-07   
989-301 4   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 344   2006-06-11   
989-301 5   0695 FRONTIER NORTH, INC. - MI 344   2007-09-14   
989-301 6   0695 FRONTIER NORTH, INC. - MI 344   2007-09-14   
989-301 7   508J CENTURYLINK COMMUNICATIONS, LLC 344   2015-05-07   
989-301 8   991E BANDWIDTH.COM CLEC, LLC - MI 344   2019-01-06   
989-301 9   933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 344   2014-05-08   
989-360 A SGNWMIFAXKX  543C ONVOY, LLCV - MI 344      
989-360 0   145J TERRA NOVA TELECOM INC. 344   2025-07-10   
989-360 1   543C ONVOY, LLCV - MI 344   2020-12-25   
989-360 2   543C ONVOY, LLCV - MI 344   2020-12-25   
989-360 3   624H ONVOY SPECTRUM, LLC 344   2023-05-30   
989-642 A HMLCMIXGRS0  0695 FRONTIER NORTH, INC. - MI 344      
989-642 0   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 344   2004-11-14   
989-642 1   691A DAYSTARR, LLC DBA DAYSTARR COMMUNICATIONS - MI 344   2005-09-19   
989-642 2   0695 FRONTIER NORTH, INC. - MI 344      
989-642 3   0695 FRONTIER NORTH, INC. - MI 344      
989-642 4   0695 FRONTIER NORTH, INC. - MI 344      
989-642 5   0695 FRONTIER NORTH, INC. - MI 344      
989-642 6   0695 FRONTIER NORTH, INC. - MI 344      
989-642 7   0695 FRONTIER NORTH, INC. - MI 344      
989-642 8   0695 FRONTIER NORTH, INC. - MI 344      
989-642 9   0695 FRONTIER NORTH, INC. - MI 344      

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

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