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: 297

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
831-297 A Hollister CA SLNSCA01X8Y  6529 T-MOBILE USA, INC. 736      
831-297 0 Hollister CA   6529 T-MOBILE USA, INC. 736      
831-297 1 Hollister CA   5562 METROPCS, INC. 736   2016-07-09   
831-297 2 Hollister CA   6529 T-MOBILE USA, INC. 736      
831-297 3 Hollister CA   6529 T-MOBILE USA, INC. 736      
831-297 4 Hollister CA   5562 METROPCS, INC. 736   2011-07-21   
831-297 5 Hollister CA   5562 METROPCS, INC. 736   2020-10-23   
831-297 6 Hollister CA   6529 T-MOBILE USA, INC. 736   2020-07-19   
831-297 7 Hollister CA   776C CHARTER FIBERLINK CA-CCO, LLC - CA 736   2019-04-21   
831-297 8 Hollister CA   6529 T-MOBILE USA, INC. 736   2020-05-15   
831-297 9 Hollister CA   6529 T-MOBILE USA, INC. 736   2021-03-18   

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

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