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: 587

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
531-587 A Lincoln NE   883K AHOI LLC 958   2026-08-23   
531-587 8 Lincoln NE   883K AHOI LLC 958   2026-08-23   

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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