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: 512

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
831-512 A Salinas CA SLNSCA01X8Y  6529 T-MOBILE USA, INC. 736      
831-512 0 Salinas CA   6529 T-MOBILE USA, INC. 736   2015-03-13   
831-512 1 Salinas CA   981E BANDWIDTH.COM CLEC, LLC - CA 736   2016-07-21   
831-512 2 Salinas CA   6529 T-MOBILE USA, INC. 736   2008-03-09   
831-512 3 Salinas CA   6529 T-MOBILE USA, INC. 736   2005-12-09   
831-512 4 Salinas CA   6529 T-MOBILE USA, INC. 736   2006-01-13   
831-512 5 Salinas CA   6529 T-MOBILE USA, INC. 736   2003-10-21   
831-512 6 Salinas CA   6010 NEW CINGULAR WIRELESS PCS, LLC 736   2006-02-17   
831-512 7 Salinas CA   6010 NEW CINGULAR WIRELESS PCS, LLC 736   2006-02-17   
831-512 8 Salinas CA   6529 T-MOBILE USA, INC. 736   2006-03-30   
831-512 9 Salinas CA   981E BANDWIDTH.COM CLEC, LLC - CA 736   2010-12-19   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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