Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Sioux City, IA

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
712-991 7   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 630   2025-11-28   
712-991 8   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 630   2025-11-28   
712-991 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 630   2025-11-28   

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Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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