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: 664

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
831-664 A Hollister CA SLNSCA01XXX  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 736      
831-664 0 Hollister CA   981E BANDWIDTH.COM CLEC, LLC - CA 736      
831-664 1 Hollister CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 736      
831-664 2 Hollister CA   649C ONVOY, LLC - CA 736   2024-07-27   
831-664 3 Hollister CA   732J NUSO, LLC 736   2024-12-16   
831-664 4 Hollister CA   6529 T-MOBILE USA, INC. 736   2023-12-14   
831-664 5 Hollister CA   6529 T-MOBILE USA, INC. 736   2023-12-14   
831-664 6 Hollister CA   5562 METROPCS, INC. 736   2008-05-01   
831-664 7 Hollister CA   508J CENTURYLINK COMMUNICATIONS, LLC 736   2015-11-09   
831-664 8 Hollister CA   5562 METROPCS, INC. 736   2008-12-21   
831-664 9 Hollister CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 736   2008-05-16   

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

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