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   792K CHARTER IP ENABLED SERVICES, LLC 348      
231-581 0   792K CHARTER IP ENABLED SERVICES, LLC 348      
231-584 A LKNRMIXJDS1  0721 PIGEON TEL. CO. 348      

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

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