Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
231-599 A Eastport MI 0695 FRONTIER NORTH, INC. - MI 348      
231-599 2 Eastport MI 0695 FRONTIER NORTH, INC. - MI 348      
231-599 3 Eastport MI 0695 FRONTIER NORTH, INC. - MI 348      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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