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: 500

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
517-500 A Sunfield MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346      
517-500 0 Sunfield MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2019-01-07   
517-500 1 Sunfield MI LNNGMIMN00Z  624H ONVOY SPECTRUM, LLC 346   2021-06-17   
517-500 2 Sunfield MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2020-05-09   
517-500 3 Sunfield MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2020-05-09   
517-500 4 Sunfield MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2020-05-09   
517-500 5 Sunfield MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2018-11-24   
517-500 6 Sunfield MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2020-05-09   
517-500 7 Sunfield MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2020-09-12   
517-500 8 Sunfield MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2020-09-12   
517-500 9 Sunfield MI   991E BANDWIDTH.COM CLEC, LLC - MI 346   2025-12-18   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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