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: 431

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
517-431 A Tipton MI TPTNMIXGRS0  0695 FRONTIER NORTH, INC. - MI 340      
517-431 0 Tipton MI   817J INTERACTIVE SERVICES NETWORK, INC. 340   2005-09-03   
517-431 1 Tipton MI   558A DEERFIELD FARMERS' TELEPHONE COMPANY - MI 340   2011-09-12   
517-431 2 Tipton MI   0695 FRONTIER NORTH, INC. - MI 340      
517-431 3 Tipton MI   0695 FRONTIER NORTH, INC. - MI 340      
517-431 4 Tipton MI   543C ONVOY, LLCV - MI 340   2007-03-09   
517-431 5 Tipton MI   318J COMCAST IP PHONE, LLC 340   2007-06-25   
517-431 6 Tipton MI   3459 TC3 TELECOM, INC. - MI 340   2010-10-20   
517-431 7 Tipton MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2006-11-28   
517-431 8 Tipton MI   0695 FRONTIER NORTH, INC. - MI 340      
517-431 9 Tipton MI   508J CENTURYLINK COMMUNICATIONS, LLC 340   2014-04-01   

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

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