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: 901

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
517-901 A Reading MI LNNGMIMN17Z  792K CHARTER IP ENABLED SERVICES, LLC 346   2025-02-13   
517-901 0 Reading MI   792K CHARTER IP ENABLED SERVICES, LLC 346   2007-11-19   
517-901 1 Reading MI   543C ONVOY, LLCV - MI 346   2017-12-16   
517-901 2 Reading MI   543C ONVOY, LLCV - MI 346   2021-03-05   
517-901 3 Reading MI   543C ONVOY, LLCV - MI 346   2021-03-05   
517-901 4 Reading MI   624H ONVOY SPECTRUM, LLC 346   2021-06-17   
517-901 5 Reading MI   508J CENTURYLINK COMMUNICATIONS, LLC 346   2016-01-27   
517-901 6 Reading MI   770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 346   2015-10-09   
517-901 7 Reading MI   543C ONVOY, LLCV - MI 346   2013-04-05   

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

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