Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 517 [Rate centres in NPA 517] [Dial plan for NPA 517]

NXX: 639

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
517-639 A Quincy MI QNCYMIXGRS0  0695 FRONTIER NORTH, INC. - MI 348      
517-639 0 Quincy MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348   2004-11-14   
517-639 1 Quincy MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348   2006-07-23   
517-639 2 Quincy MI   792K CHARTER IP ENABLED SERVICES, LLC 348   2007-02-25   
517-639 3 Quincy MI   0695 FRONTIER NORTH, INC. - MI 348      
517-639 4 Quincy MI   0695 FRONTIER NORTH, INC. - MI 348      
517-639 5 Quincy MI   0695 FRONTIER NORTH, INC. - MI 348      
517-639 6 Quincy MI   543C ONVOY, LLCV - MI 348   2007-03-09   
517-639 7 Quincy MI   0695 FRONTIER NORTH, INC. - MI 348      
517-639 8 Quincy MI   0695 FRONTIER NORTH, INC. - MI 348      
517-639 9 Quincy MI   0695 FRONTIER NORTH, INC. - MI 348      

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

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