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]

Block: A

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
831-948 A Watsonville CA SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722      
831-970 A Salinas CA SLNSCA01X8Y  6529 T-MOBILE USA, INC. 736      
831-975 A Salinas CA   394L COMCAST PHONE OF CALIFORNIA, LLC 736      
831-996 A Tres Pinos CA   515J IP HORIZON LLC 736      
831-998 A Salinas CA SLNSCA01XTX  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 736      
831-999 A Santa Cruz CA SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722      

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Last updated: Sat, 04 Jul 2026 13:07:56 UTC

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