Local Calling Guide

Area code/prefix search

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

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
231-581 A GFTPMIEF2MD  792K CHARTER IP ENABLED SERVICES, LLC 348      
231-581 0 GFTPMIEF2MD  792K CHARTER IP ENABLED SERVICES, LLC 348      
231-584 A LKNRMIXJDS1  0721 PIGEON TEL. CO. 348      

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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