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: 880

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
831-880 A Monterey CA SNJYCAHMDS1  193E 8X8, INC. 736   2026-07-13   
831-880 0 Monterey CA   649C ONVOY, LLC - CA 736   2026-08-21   
831-880 1 Monterey CA SNJYCAHMDS1  193E 8X8, INC. 736   2026-07-13   

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

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