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: 339

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
831-339 A Gonzales CA SLNSCABIXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 736   2025-11-01   
831-339 0 Gonzales CA   649C ONVOY, LLC - CA 736   2026-08-23   
831-339 4 Gonzales CA SLNSCA01XAY  073H TELNYX LLC 736   2025-11-03   
831-339 7 Gonzales CA   114J EXIANT COMMUNICATIONS LLC 736   2026-10-16   
831-339 8 Gonzales CA MTRYCAPMDS0  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 736   2026-04-19   
831-339 9 Gonzales CA SLNSCABIXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 736   2025-11-01   

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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