Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Switch: SLNSCA01X8Y

<< 1 2 3 4 5 6 7 >>

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
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   
831-305 4 Gonzales CA 5562 METROPCS, INC. 736   2021-02-01   
831-312 6 Monterey CA 6529 T-MOBILE USA, INC. 736   2024-09-15   
831-313 5 Hollister CA 6529 T-MOBILE USA, INC. 736   2016-07-07   
831-313 6 Hollister CA 6529 T-MOBILE USA, INC. 736   2016-11-04   
831-313 7 Hollister CA 6529 T-MOBILE USA, INC. 736   2014-11-05   
831-313 8 Hollister CA 6529 T-MOBILE USA, INC. 736   2014-11-05   
831-313 9 Hollister CA 6529 T-MOBILE USA, INC. 736   2014-11-05   
831-315 0 Soledad CA 5562 METROPCS, INC. 736   2017-03-26   
831-324 2 Monterey CA 6529 T-MOBILE USA, INC. 736   2015-03-17   
831-324 8 Monterey CA 6529 T-MOBILE USA, INC. 736   2015-03-17   
831-324 9 Monterey CA 6529 T-MOBILE USA, INC. 736   2016-05-14   
831-356 1 Salinas CA 6529 T-MOBILE USA, INC. 736   2021-02-05   
831-356 2 Salinas CA 6529 T-MOBILE USA, INC. 736   2021-02-05   
831-356 3 Salinas CA 6529 T-MOBILE USA, INC. 736   2020-07-22   
831-356 4 Salinas CA 6529 T-MOBILE USA, INC. 736   2020-07-22   
831-356 5 Salinas CA 6529 T-MOBILE USA, INC. 736   2020-06-05   
831-356 6 Salinas CA 6529 T-MOBILE USA, INC. 736   2020-06-05   
831-383 A Monterey CA 5562 METROPCS, INC. 736      
831-383 0 Monterey CA 5562 METROPCS, INC. 736      
831-383 1 Monterey CA 5562 METROPCS, INC. 736      
831-383 2 Monterey CA 5562 METROPCS, INC. 736      
831-383 3 Monterey CA 5562 METROPCS, INC. 736      
831-383 4 Monterey CA 5562 METROPCS, INC. 736      
831-383 6 Monterey CA 5562 METROPCS, INC. 736   2008-05-04   
831-386 6 King City CA 5562 METROPCS, INC. 736   2017-03-26   
831-388 0 Greenfield (Monterey) CA 5562 METROPCS, INC. 736   2022-11-07   
831-393 5 Monterey CA 5562 METROPCS, INC. 736   2017-03-26   
831-442 4 Salinas CA 5562 METROPCS, INC. 736   2010-11-08   
831-484 3 Salinas CA 5562 METROPCS, INC. 736   2006-06-17   
831-500 3 Salinas CA 5562 METROPCS, INC. 736   2018-07-02   
831-500 4 Salinas CA 5562 METROPCS, INC. 736   2018-07-02   
831-500 7 Salinas CA 5562 METROPCS, INC. 736   2018-04-16   
831-500 8 Salinas CA 5562 METROPCS, INC. 736   2018-04-16   
831-500 9 Salinas CA 5562 METROPCS, INC. 736   2018-04-16   
831-512 A Salinas CA 6529 T-MOBILE USA, INC. 736      
831-512 0 Salinas CA 6529 T-MOBILE USA, INC. 736   2015-03-13   
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 8 Salinas CA 6529 T-MOBILE USA, INC. 736   2006-03-30   
831-525 1 King City CA 5562 METROPCS, INC. 736   2005-11-02   
831-525 2 King City CA 5562 METROPCS, INC. 736   2006-08-28   
831-525 3 King City CA 5562 METROPCS, INC. 736   2009-06-19   
831-537 3 Hollister CA 5562 METROPCS, INC. 736   2005-11-02   
831-537 4 Hollister CA 5562 METROPCS, INC. 736   2005-11-02   
831-537 5 Hollister CA 5562 METROPCS, INC. 736   2005-11-02   
831-537 6 Hollister CA 5562 METROPCS, INC. 736   2007-08-05   

<< 1 2 3 4 5 6 7 >>

Last updated: Tue, 31 Mar 2026 13:56:49 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.