Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Osseo, MI

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
517-523 A OSSEMIXIDS0  4417 FRONTIER COMMUNICATIONS OF MICHIGAN, INC. 346      
517-594 A MDTPMICODS0  3535 ACD TELECOM, INC. - MI 346      
517-594 0 LNNGMIMN08Z  991E BANDWIDTH.COM CLEC, LLC - MI 346   2023-12-09   
517-594 1 LNNGMIMN00Z  624H ONVOY SPECTRUM, LLC 346   2024-05-10   
517-594 2 LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2021-06-18   
517-594 3 LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2021-07-11   
517-594 4 LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2018-10-12   
517-594 5 LNNGMIMN02Z  318J COMCAST IP PHONE, LLC 346   2008-07-22   
517-594 6 LNNGMIMNX8Z  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 346   2016-02-15   

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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