Local Calling Guide

Area code/prefix search

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Grass Lake, MI

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
517-522 A GRLKMIXGDS0  0695 FRONTIER NORTH, INC. - MI 346      
517-522 0   4632 TELNET WORLDWIDE, INC. 346   2005-09-03   
517-522 1   770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 346   2016-03-21   
517-522 2   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346   2009-12-07   
517-522 3   0695 FRONTIER NORTH, INC. - MI 346      
517-522 4   0695 FRONTIER NORTH, INC. - MI 346      
517-522 5   0695 FRONTIER NORTH, INC. - MI 346      
517-522 6   0695 FRONTIER NORTH, INC. - MI 346      
517-522 7   543C ONVOY, LLC - MI 346   2007-03-05   
517-522 8   0695 FRONTIER NORTH, INC. - MI 346      
517-522 9   2550 123 NET, INC. 346   2017-04-03   
517-926 A MDTPMICODS0  3535 ACD TELECOM, INC. - MI 346      
517-926 0   543C ONVOY, LLC - MI 346   2017-12-21   
517-926 1   8935 COMCAST PHONE OF MICHIGAN, LLC - MI 346   2007-06-08   
517-926 2   3535 ACD TELECOM, INC. - MI 346      
517-926 3   3535 ACD TELECOM, INC. - MI 346      
517-926 4   3535 ACD TELECOM, INC. - MI 346      
517-926 5   7575 CENTURYLINK COMMUNICATIONS LLC 346   2016-01-25   
517-926 6   668E SIGECOM, LLC DBA WOW INTERNET CABLE AND PHONE 346   2012-05-20   
517-926 7   3535 ACD TELECOM, INC. - MI 346      
517-926 8   543C ONVOY, LLC - MI 346   2013-04-01   
517-926 9   3535 ACD TELECOM, INC. - MI 346      

Last updated: Tue, 31 Dec 2019 02:37:20 UTC

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