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: 550

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
517-550 A Dimondale MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346      
517-550 0 Dimondale MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2018-10-22   
517-550 1 Dimondale MI LNNGMIDC0MD  939H COMMIO, LLC 346   2022-12-03   
517-550 4 Dimondale MI LNNGMIMN00Z  624H ONVOY SPECTRUM, LLC 346   2021-06-17   
517-550 5 Dimondale MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2021-02-03   
517-550 6 Dimondale MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2021-02-03   
517-550 7 Dimondale MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2021-02-03   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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