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: 878

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
517-878 A Leslie MI LNNGMIVE2MD  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346      
517-878 0 Leslie MI   543C ONVOY, LLCV - MI 346   2021-07-11   
517-878 1 Leslie MI   543C ONVOY, LLCV - MI 346   2012-12-30   
517-878 2 Leslie MI   543C ONVOY, LLCV - MI 346   2012-05-28   
517-878 3 Leslie MI   516C AT&T CORP. 346   2013-11-08   
517-878 4 Leslie MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346   2006-01-19   
517-878 5 Leslie MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346   2008-05-19   
517-878 6 Leslie MI   961J WOW! INTERNET, CABLE AND PHONE 346   2012-05-20   
517-878 7 Leslie MI   543C ONVOY, LLCV - MI 346   2007-03-05   
517-878 9 Leslie MI   543C ONVOY, LLCV - MI 346   2013-01-30   

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

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