Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 712 [Rate centres in NPA 712] [Dial plan for NPA 712]

NXX: 510

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
712-510 A Sioux City IA   179J EDGETEL, LLC 630   2025-12-28   
712-510 0 Sioux City IA   179J EDGETEL, LLC 630   2025-12-28   
712-510 1 Sioux City IA   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 630   2026-03-06   
712-510 2 Sioux City IA   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 630   2026-03-06   
712-510 3 Sioux City IA   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 630   2026-03-06   
712-510 4 Sioux City IA   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 630   2026-03-06   
712-510 5 Sioux City IA   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 630   2026-03-06   
712-510 6 Sioux City IA   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 630   2026-03-06   

Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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