Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 831 [Rate centres in NPA 831] [Dial plan for NPA 831]

NXX: 343

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
831-343 A Salinas CA   649C ONVOY, LLC - CA 736   2026-10-25   
831-343 0 Salinas CA   649C ONVOY, LLC - CA 736   2026-10-25   
831-343 1 Salinas CA   649C ONVOY, LLC - CA 736   2026-10-25   

Last updated: Tue, 29 Sep 2026 03:00:13 UTC

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