Local Calling Guide

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Search area code/prefix (NPA/NXX)
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NPA: 831 [Rate centres in NPA 831] [Dial plan for NPA 831]

NXX: 406

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
831-406 A Watsonville CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
831-406 0 Watsonville CA   6529 T-MOBILE USA, INC. 722      
831-406 1 Watsonville CA   981E BANDWIDTH.COM CLEC, LLC - CA 722   2009-01-15   
831-406 2 Watsonville CA   5562 METROPCS, INC. 722   2010-10-21   
831-406 3 Watsonville CA   5562 METROPCS, INC. 722   2011-06-24   
831-406 4 Watsonville CA   5562 METROPCS, INC. 722   2011-07-14   
831-406 5 Watsonville CA   649C ONVOY, LLC - CA 722   2015-07-31   
831-406 6 Watsonville CA   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2011-12-12   
831-406 7 Watsonville CA   6529 T-MOBILE USA, INC. 722   2005-10-13   
831-406 8 Watsonville CA   6529 T-MOBILE USA, INC. 722   2015-05-15   
831-406 9 Watsonville CA   6529 T-MOBILE USA, INC. 722      

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

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