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: 432

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
531-432 A Omaha NE   7144 TELEPORT COMMUNICATIONS AMERICA, LLC - NE 644   2025-12-19   
531-432 0 Omaha NE   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 644   2026-03-15   
531-432 1 Omaha NE   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 644   2026-03-15   
531-432 2 Omaha NE   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 644   2026-03-15   
531-432 3 Omaha NE   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 644   2026-03-15   
531-432 4 Omaha NE   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 644   2026-03-15   
531-432 5 Omaha NE   7144 TELEPORT COMMUNICATIONS AMERICA, LLC - NE 644   2026-01-12   
531-432 6 Omaha NE   7144 TELEPORT COMMUNICATIONS AMERICA, LLC - NE 644   2025-12-19   
531-432 7 Omaha NE   7144 TELEPORT COMMUNICATIONS AMERICA, LLC - NE 644   2025-12-19   
531-432 8 Omaha NE   7144 TELEPORT COMMUNICATIONS AMERICA, LLC - NE 644   2025-12-19   
531-432 9 Omaha NE   7144 TELEPORT COMMUNICATIONS AMERICA, LLC - NE 644   2025-12-19   

Last updated: Sat, 21 Mar 2026 23:53:39 UTC

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