Local Calling Guide

Area code/prefix search

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

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
517-254 A FRNTMIXIRSA  4417 FRONTIER COMMUNICATIONS OF MICHIGAN, INC. 346      
517-891 A MDTPMICODS0  3535 ACD TELECOM, INC. - MI 346      
517-891 0   624H ONVOY SPECTRUM, LLC 346      
517-891 2 LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346      
517-891 3 MDTPMICODS0  3535 ACD TELECOM, INC. - MI 346      
517-891 4 LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346      
517-891 7   792K CHARTER IP ENABLED SERVICES, LLC 346      
517-891 8 LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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