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: 677

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
831-677 A Soledad CA SLNSCA011KD  7379 MATRIX TELECOM, LLC. S/I/I TNCI - CA 736      
831-677 0 Soledad CA   6010 NEW CINGULAR WIRELESS PCS, LLC 736   2025-05-03   
831-677 1 Soledad CA   6010 NEW CINGULAR WIRELESS PCS, LLC 736   2021-09-26   
831-677 2 Soledad CA   649C ONVOY, LLC - CA 736      
831-677 3 Soledad CA   649C ONVOY, LLC - CA 736      
831-677 4 Soledad CA   649C ONVOY, LLC - CA 736   2022-03-04   
831-677 5 Soledad CA   649C ONVOY, LLC - CA 736   2021-07-30   
831-677 6 Soledad CA   981E BANDWIDTH.COM CLEC, LLC - CA 736   2014-03-28   
831-677 7 Soledad CA   965H FRACTEL, LLC 736   2020-11-29   
831-677 8 Soledad CA   6010 NEW CINGULAR WIRELESS PCS, LLC 736   2020-12-26   
831-677 9 Soledad CA   6010 NEW CINGULAR WIRELESS PCS, LLC 736   2021-04-01   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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