Local Calling Guide

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Owosso, MI

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
989-998 9 SGNWMIATWMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 344   2018-09-15   

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Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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