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.

OCN: 8826 LEVEL 3 COMMUNICATIONS, LLC - CA

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
831-207 4 Hollister CA SLNSCA01XXX  736   2005-07-31   
831-216 1 Felton CA SNFCCASY5MD  722   2005-12-17   
831-216 4 Felton CA SNFCCASY5MD  722   2004-04-10   
831-216 5 Felton CA SNFCCASY5MD  722   2008-05-19   
831-217 1 Boulder Creek CA SNFCCASY5MD  722   2005-09-10   
831-218 3 Ben Lomond CA SNFCCASY5MD  722   2008-05-19   
831-219 4 Aptos CA SNFCCASY5MD  722   2008-02-01   
831-221 5 San Ardo CA SLNSCA01XXX  736   2005-07-31   
831-222 6 Felton CA SNFCCASY5MD  722   2012-07-22   
831-223 A Soledad CA SLNSCA01XXX  736      
831-223 4 Soledad CA SLNSCA01XXX  736   2005-07-31   
831-233 A Monterey CA SLNSCA01XXX  736      
831-233 3 Monterey CA SLNSCA01XXX  736   2005-03-10   
831-233 6 Monterey CA SLNSCA01XXX  736   2008-02-15   
831-237 8 Soledad CA SLNSCA01XXX  736   2012-03-10   
831-240 0 Salinas CA SLNSCA01XXX  736   2007-06-20   
831-240 4 Salinas CA SLNSCA01XXX  736   2005-07-31   
831-241 5 Monterey CA SLNSCA01XXX  736   2009-06-17   
831-250 0 Carmel CA SLNSCA01XXX  736   2010-06-17   
831-250 6 Carmel CA SLNSCA01XXX  736   2005-07-26   
831-263 5 King City CA SLNSCA01XXX  736   2005-07-31   
831-269 3 Salinas CA SLNSCA01XXX  736   2008-09-19   
831-269 5 Salinas CA SLNSCA01XXX  736   2008-05-20   
831-272 0 Salinas CA SLNSCA01XXX  736   2009-09-16   
831-274 A Watsonville CA SNFCCASY5MD  722      
831-274 2 Watsonville CA SNFCCASY5MD  722      
831-274 5 Watsonville CA SNFCCASY5MD  722   2006-06-16   
831-274 6 Watsonville CA SNFCCASY5MD  722      
831-288 6 Watsonville CA SNFCCASY5MD  722   2010-12-16   
831-293 A Carmel CA SLNSCA01XXX  736      
831-293 2 Carmel CA SLNSCA01XXX  736   2008-08-09   
831-296 A Salinas CA SLNSCA01XXX  736      
831-296 1 Salinas CA SLNSCA01XXX  736   2014-05-12   
831-296 5 Salinas CA SLNSCA01XXX  736   2011-06-24   
831-298 5 Carmel Valley CA SLNSCA01XXX  736   2005-07-26   
831-299 A Tres Pinos CA SLNSCA01XXX  736      
831-299 0 Tres Pinos CA SLNSCA01XXX  736      
831-299 1 Tres Pinos CA SLNSCA01XXX  736      
831-300 A Big Sur CA SLNSCA01XXX  736      
831-300 0 Big Sur CA SLNSCA01XXX  736      
831-300 1 Big Sur CA SLNSCA01XXX  736      
831-300 4 Big Sur CA SLNSCA01XXX  736      
831-302 A San Lucas CA SLNSCA01XXX  736      
831-302 0 San Lucas CA SLNSCA01XXX  736      
831-305 A Gonzales CA SLNSCA01XXX  736      
831-305 0 Gonzales CA SLNSCA01XXX  736      
831-305 2 Gonzales CA SLNSCA01XXX  736      
831-306 A Chualar CA SLNSCA01XXX  736      
831-306 0 Chualar CA SLNSCA01XXX  736      
831-306 2 Chualar CA SLNSCA01XXX  736      
831-307 A Castroville CA SLNSCA01XXX  736      
831-307 0 Castroville CA SLNSCA01XXX  736      
831-307 2 Castroville CA SLNSCA01XXX  736      
831-316 1 Santa Cruz CA SNFCCASY5MD  722   2012-08-27   
831-316 9 Santa Cruz CA SNFCCASY5MD  722   2012-07-22   
831-325 0 Santa Cruz CA SNFCCASY5MD  722   2008-03-14   
831-331 4 Santa Cruz CA SNFCCASY5MD  722   2004-07-06   
831-337 4 Boulder Creek CA SNFCCASY5MD  722   2004-04-10   
831-350 A Tres Pinos CA SLNSCA01XXX  736      
831-350 4 Tres Pinos CA SLNSCA01XXX  736   2006-07-02   
831-350 6 Tres Pinos CA SLNSCA01XXX  736   2007-10-18   
831-359 A Santa Cruz CA SNFCCASY5MD  722      
831-359 4 Santa Cruz CA SNFCCASY5MD  722      
831-401 A Ben Lomond CA SNFCCASY5MD  722      
831-401 2 Ben Lomond CA SNFCCASY5MD  722      
831-401 3 Ben Lomond CA SNFCCASY5MD  722      
831-401 9 Ben Lomond CA SNFCCASY5MD  722      
831-431 8 Santa Cruz CA SNFCCASY5MD  722   2009-06-23   
831-440 3 Santa Cruz CA SNFCCASY5MD  722   2006-01-28   
831-440 7 Santa Cruz CA SNFCCASY5MD  722   2006-01-28   
831-440 8 Santa Cruz CA SNFCCASY5MD  722   2006-01-28   
831-465 5 Santa Cruz CA SNFCCASY5MD  722   2014-04-06   
831-498 9 Watsonville CA SNFCCASY5MD  722   2008-05-08   
831-525 A King City CA SLNSCA01XXX  736      
831-525 6 King City CA SLNSCA01XXX  736   2012-03-10   
831-531 2 Aptos CA SNFCCASY5MD  722   2005-05-16   
831-531 4 Aptos CA SNFCCASY5MD  722   2004-01-13   
831-536 4 Watsonville CA SNFCCASY5MD  722   2005-07-31   
831-574 0 Carmel CA SLNSCA01XXX  736      
831-574 5 Carmel CA SLNSCA01XXX  736   2011-12-31   
831-585 1 Salinas CA SLNSCA01XXX  736   2005-04-11   
831-612 A Aptos CA SNFCCASY5MD  722      
831-612 0 Aptos CA SNFCCASY5MD  722      
831-621 A Santa Cruz CA SNFCCASY5MD  722      
831-621 0 Santa Cruz CA SNFCCASY5MD  722      
831-621 1 Santa Cruz CA SNFCCASY5MD  722      
831-621 3 Santa Cruz CA SNFCCASY5MD  722      
831-621 4 Santa Cruz CA SNFCCASY5MD  722      
831-621 5 Santa Cruz CA SNFCCASY5MD  722   2010-09-11   
831-621 6 Santa Cruz CA SNFCCASY5MD  722      
831-621 8 Santa Cruz CA SNFCCASY5MD  722      
831-621 9 Santa Cruz CA SNFCCASY5MD  722      
831-623 5 San Juan CA SLNSCA01XXX  736   2005-07-31   
831-652 A Carmel Valley CA SLNSCA01XXX  736      
831-652 9 Carmel Valley CA SLNSCA01XXX  736   2014-10-24   
831-664 A Hollister CA SLNSCA01XXX  736      
831-664 1 Hollister CA SLNSCA01XXX  736      
831-664 9 Hollister CA SLNSCA01XXX  736   2008-05-16   
831-665 A Hollister CA SLNSCA01XXX  736      
831-665 6 Hollister CA SLNSCA01XXX  736   2012-01-08   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 >>

Last updated: Mon, 15 Sep 2025 02:24:40 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.