Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 531 [Rate centres in NPA 531] [Dial plan for NPA 531]

NXX: 430

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
531-430 A Omaha NE   549E ONVOY, LLC - NE 644   2025-11-08   
531-430 0 Omaha NE   549E ONVOY, LLC - NE 644   2025-11-08   
531-430 1 Omaha NE   549E ONVOY, LLC - NE 644   2025-11-08   
531-430 2 Omaha NE   549E ONVOY, LLC - NE 644   2025-11-08   
531-430 4 Omaha NE   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 644   2026-03-15   
531-430 5 Omaha NE   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 644   2026-03-15   

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

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