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: 815

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
517-815 A Tecumseh MI TCMSMIXGDS0  0695 FRONTIER NORTH, INC. - MI 340      
517-815 0 Tecumseh MI   0695 FRONTIER NORTH, INC. - MI 340      
517-815 1 Tecumseh MI   318J COMCAST IP PHONE, LLC 340   2007-06-26   
517-815 2 Tecumseh MI   543C ONVOY, LLCV - MI 340   2021-01-31   
517-815 3 Tecumseh MI   770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340   2015-12-17   
517-815 4 Tecumseh MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2009-09-26   
517-815 5 Tecumseh MI   0695 FRONTIER NORTH, INC. - MI 340   2004-06-06   
517-815 6 Tecumseh MI   543C ONVOY, LLCV - MI 340   2020-02-10   
517-815 7 Tecumseh MI   543C ONVOY, LLCV - MI 340   2014-04-18   
517-815 8 Tecumseh MI   2550 123.NET, LLC 340   2003-01-24   
517-815 9 Tecumseh MI   543C ONVOY, LLCV - MI 340   2020-02-10   

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

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