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: 368

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
531-368 A Shelby NE   624H ONVOY SPECTRUM, LLC 958      
531-368 0 Shelby NE LNCLNEXLX2Y  624H ONVOY SPECTRUM, LLC 958   2024-06-28   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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