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.
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Switch: SKTNCA01X6Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
209-227 5 Stockton CA 516C AT&T CORP. 738   2010-04-19   
209-248 5 Modesto CA 516C AT&T CORP. 738   2013-01-02   
209-256 8 Jackson CA 516C AT&T CORP. 738   2011-06-20   
209-263 A Lodi CA 516C AT&T CORP. 738      
209-263 7 Lodi CA 516C AT&T CORP. 738   2006-06-30   
209-284 0 Modesto CA 516C AT&T CORP. 738   2014-11-24   
209-286 5 Mokelumne Hill CA 516C AT&T CORP. 738   2007-09-14   
209-287 7 Modesto CA 516C AT&T CORP. 738   2016-08-03   
209-317 A Coulterville CA 516C AT&T CORP. 738      
209-317 7 Coulterville CA 516C AT&T CORP. 738   2012-02-16   
209-375 5 Yosemite CA 516C AT&T CORP. 738   2011-08-09   
209-439 2 Planada CA 516C AT&T CORP. 738   2011-06-20   
209-443 5 Wallace CA 516C AT&T CORP. 738   2011-08-09   
209-452 0 Lodi CA 516C AT&T CORP. 738   2015-05-24   
209-455 A Merced CA 516C AT&T CORP. 738      
209-455 7 Merced CA 516C AT&T CORP. 738   2015-06-17   
209-475 8 Stockton CA 516C AT&T CORP. 738      
209-542 7 Hughson CA 516C AT&T CORP. 738   2008-08-25   
209-560 3 Sutter Creek CA 516C AT&T CORP. 738   2011-06-20   
209-567 2 Modesto CA 516C AT&T CORP. 738   2010-04-26   
209-584 9 Valley Springs CA 516C AT&T CORP. 738   2011-06-20   
209-596 4 Modesto CA 516C AT&T CORP. 738   2006-07-18   
209-597 5 Tracy CA 516C AT&T CORP. 738   2010-04-19   
209-620 8 Turlock CA 516C AT&T CORP. 738   2006-06-30   
209-626 5 Merced CA 516C AT&T CORP. 738   2007-09-14   
209-641 0 Stockton CA 516C AT&T CORP. 738   2016-10-25   
209-651 A Sonora: Juno DA CA 516C AT&T CORP. 738      
209-651 1 Sonora: Juno DA CA 516C AT&T CORP. 738   2004-12-07   
209-666 1 Tracy CA 516C AT&T CORP. 738   2014-04-04   
209-674 8 San Andreas CA 516C AT&T CORP. 738   2011-06-20   
209-691 8 Escalon CA 516C AT&T CORP. 738   2008-08-25   
209-694 7 Sonora: Main DA CA 516C AT&T CORP. 738   2007-09-14   
209-710 9 Los Banos CA 516C AT&T CORP. 738   2007-09-14   
209-733 8 Gustine CA 516C AT&T CORP. 738   2011-06-20   
209-734 5 Herald CA 516C AT&T CORP. 738   2011-08-09   
209-782 5 Jamestown CA 516C AT&T CORP. 738   2011-06-20   
209-788 5 Milton CA 516C AT&T CORP. 738   2011-06-20   
209-790 5 Ione CA 516C AT&T CORP. 738   2011-06-27   
209-796 5 Thornton CA 516C AT&T CORP. 738   2011-08-09   
209-797 5 Lockeford CA 516C AT&T CORP. 738   2011-06-20   
209-812 6 Atwater CA 516C AT&T CORP. 738   2007-09-14   
209-813 A Angels Camp CA 516C AT&T CORP. 738      
209-813 7 Angels Camp CA 516C AT&T CORP. 738   2010-01-28   
209-834 5 Tracy CA 516C AT&T CORP. 738   2006-06-30   
209-837 5 Crows Landing CA 516C AT&T CORP. 738   2011-08-25   
209-844 5 Oakdale CA 516C AT&T CORP. 738   2008-08-25   
209-850 9 Turlock CA 516C AT&T CORP. 738   2014-09-26   
209-851 8 Stockton CA 516C AT&T CORP. 738   2014-08-05   
209-852 7 Waterford: Don Pedro DA CA 516C AT&T CORP. 738   2007-09-14   
209-853 5 Waterford: Main DA CA 516C AT&T CORP. 738   2007-09-14   
209-857 8 Modesto CA 516C AT&T CORP. 738   2014-05-20   
209-862 5 Newman CA 516C AT&T CORP. 738   2011-06-20   
209-863 2 Riverbank CA 516C AT&T CORP. 738   2007-09-14   
209-893 5 Plymouth CA 516C AT&T CORP. 738   2011-05-06   
209-910 A Stockton CA 516C AT&T CORP. 738      
209-910 0 Stockton CA 516C AT&T CORP. 738   2013-12-05   
209-910 9 Stockton CA 516C AT&T CORP. 738   2012-05-10   
209-912 4 Galt CA 516C AT&T CORP. 738   2007-09-14   
209-917 3 Le Grand CA 516C AT&T CORP. 738   2011-08-09   
209-927 9 Moccasin CA 516C AT&T CORP. 738   2011-06-20   
209-949 2 Stockton CA 516C AT&T CORP. 738   2015-04-24   
209-962 3 Groveland CA 516C AT&T CORP. 738   2011-08-09   
350-208 2 Knights Ferry CA 516C AT&T CORP. 738   2025-01-08   
350-232 A Pinecrest CA 516C AT&T CORP. 738   2025-01-15   
350-232 7 Pinecrest CA 516C AT&T CORP. 738   2025-01-15   
559-715 3 Chowchilla CA 516C AT&T CORP. 738   2007-09-14   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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