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: 203

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
831-203 A Salinas CA SLNTCAPS5MD  732J NUSO, LLC 736      
831-203 0 Salinas CA SLNSCA01X9Y  649C ONVOY, LLC - CA 736   2023-10-29   
831-203 1 Salinas CA SLNTCAPS5MD  732J NUSO, LLC 736   2023-10-13   
831-203 2 Salinas CA SLNSCA01X9Y  649C ONVOY, LLC - CA 736   2023-10-29   
831-203 3 Salinas CA SLNSCA01X9Y  649C ONVOY, LLC - CA 736   2023-10-29   
831-203 7 Salinas CA   981E BANDWIDTH.COM CLEC, LLC - CA 736   2026-05-03   
831-203 8 Salinas CA   981E BANDWIDTH.COM CLEC, LLC - CA 736   2026-05-03   
831-203 9 Salinas CA   145J TERRA NOVA TELECOM INC. 736   2026-06-04   

Last updated: Sun, 17 May 2026 03:26:51 UTC

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