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: 516C AT&T CORP.

<< 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 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
830-784 2 Christine TX   566   2011-03-25   
830-837 A New Braunfels TX SNANTXCAXBZ  566   2006-02-27   
830-837 5 New Braunfels TX   566   2006-06-27   
830-854 2 Crystal City TX   566   2011-03-25   
830-867 4 Brackettville TX   566   2011-03-25   
830-900 5 Uvalde TX   566   2011-03-31   
830-988 5 Sabinal TX   566   2011-03-31   
830-999 5 Catarina TX   566   2011-11-25   
831-217 5 Boulder Creek CA   722   2011-09-26   
831-226 A Santa Cruz CA   722      
831-226 5 Santa Cruz CA   722   2015-08-15   
831-232 5 Chualar CA   736   2011-08-05   
831-237 5 Soledad CA   736   2011-06-20   
831-249 A Big Sur CA SLNSCA01XEX  736   2010-01-28   
831-249 7 Big Sur CA   736   2010-01-28   
831-265 A Hollister CA SLNSCA01XWX  736   2008-05-24   
831-265 7 Hollister CA   736   2008-05-24   
831-272 3 Salinas CA   736   2008-06-05   
831-272 6 Salinas CA   736   2014-02-07   
831-290 5 Gonzales CA   736   2011-09-26   
831-453 A Castroville CA SLNSCA01X2Y  736   2011-03-11   
831-453 7 Castroville CA   736   2011-03-11   
831-508 5 Felton CA   722   2011-09-26   
831-515 7 Santa Cruz CA   722   2006-07-07   
831-525 8 King City CA   736   2011-09-26   
831-532 5 Ben Lomond CA   722   2011-09-26   
831-536 5 Watsonville CA   722   2007-02-26   
831-574 3 Carmel CA   736   2008-06-05   
831-593 5 San Juan CA   736   2011-09-26   
831-627 4 San Ardo CA   736   2011-09-26   
831-628 5 Tres Pinos CA   736   2011-09-26   
831-643 4 Monterey CA   736   2016-07-21   
831-652 3 Carmel Valley CA   736   2012-12-03   
831-708 4 Aptos CA   722   2008-08-22   
831-726 5 Watsonville CA   722   2015-06-23   
831-747 A Monterey CA SLNSCA01XEX  736   2005-05-21   
831-747 1 Monterey CA   736   2005-05-21   
831-747 2 Monterey CA   736   2014-05-13   
831-796 5 Salinas CA   736   2015-08-24   
831-856 8 Greenfield (Monterey) CA   736   2010-11-05   
832-242 6 Houston TX   560   2016-10-04   
832-242 7 Houston TX   560   2016-10-04   
832-269 A Houston TX   560      
832-269 5 Houston TX   560   2014-07-06   
832-288 2 Houston Suburban TX   560   2010-01-29   
832-288 3 Houston Suburban TX   560   2010-01-29   
832-295 3 Houston Suburban TX   560   2005-04-19   
832-328 5 Houston Suburban TX   560   2010-05-27   
832-328 7 Houston Suburban TX   560   2010-08-12   
832-328 8 Houston Suburban TX   560   2010-08-12   

<< 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 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 >>

Last updated: Sun, 10 Nov 2019 13:49:34 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.