Local Calling Guide

Area code/prefix search

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

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
231-415 A GFTPMIEF2MD  792K CHARTER IP ENABLED SERVICES, LLC 348      
231-415 1 GFTPMIEF2MD  792K CHARTER IP ENABLED SERVICES, LLC 348   2023-04-23   
231-859 A KLVAMIXIDS0  0703 KALEVA TEL. CO. 348      

Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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