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: FRSNCA01XCZ

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
559-231 A Fresno CA 516C AT&T CORP. 728      
559-231 5 Fresno CA 516C AT&T CORP. 728   2014-09-27   
559-258 6 Del Rey CA 516C AT&T CORP. 728   2010-10-27   
559-326 0 Clovis CA 516C AT&T CORP. 728   2010-10-28   
559-372 A Visalia CA 516C AT&T CORP. 728      
559-372 7 Visalia CA 516C AT&T CORP. 728   2008-04-15   
559-374 5 Fresno CA 516C AT&T CORP. 728   2013-11-05   
559-374 6 Fresno CA 516C AT&T CORP. 728   2014-06-14   
559-375 A Fresno CA 516C AT&T CORP. 728      
559-375 1 Fresno CA 516C AT&T CORP. 728   2005-05-21   
559-377 A Madera CA 516C AT&T CORP. 728      
559-377 5 Madera CA 516C AT&T CORP. 728   2015-08-08   
559-382 5 Mendota CA 516C AT&T CORP. 728   2010-10-27   
559-383 A Avenal CA 516C AT&T CORP. 728      
559-383 7 Avenal CA 516C AT&T CORP. 728   2010-01-28   
559-384 A Burrel CA 516C AT&T CORP. 728      
559-384 7 Burrel CA 516C AT&T CORP. 728   2011-03-11   
559-416 7 Madera CA 516C AT&T CORP. 728   2008-04-15   
559-427 6 Pixley CA 516C AT&T CORP. 728   2010-10-27   
559-428 5 Riverdale CA 516C AT&T CORP. 728   2010-10-26   
559-449 3 Fresno CA 516C AT&T CORP. 728   2009-10-22   
559-463 5 Stratford CA 516C AT&T CORP. 728   2011-08-05   
559-464 3 Terra Bella CA 516C AT&T CORP. 728   2010-10-27   
559-465 5 Three Rivers CA 516C AT&T CORP. 728   2010-10-27   
559-466 6 Tipton CA 516C AT&T CORP. 728   2010-10-27   
559-467 5 Tulare CA 516C AT&T CORP. 728   2008-04-15   
559-515 6 Fresno CA 516C AT&T CORP. 728   2010-08-03   
559-570 8 Fresno CA 516C AT&T CORP. 728   2011-05-15   
559-575 8 Clovis CA 516C AT&T CORP. 728   2014-09-30   
559-587 5 Hanford CA 516C AT&T CORP. 728   2008-04-15   
559-596 5 Dinuba CA 516C AT&T CORP. 728   2010-10-27   
559-608 0 Visalia CA 516C AT&T CORP. 728   2016-09-24   
559-654 5 Sequoia CA 516C AT&T CORP. 728   2025-01-15   
559-682 5 Caruthers CA 516C AT&T CORP. 728   2011-08-05   
559-694 2 Firebaugh CA 516C AT&T CORP. 728   2010-10-27   
559-721 A Fresno CA 516C AT&T CORP. 728      
559-721 7 Fresno CA 516C AT&T CORP. 728   2015-04-22   
559-728 9 Fresno CA 516C AT&T CORP. 728   2015-10-04   
559-747 2 Visalia CA 516C AT&T CORP. 728   2014-09-08   
559-763 6 Huron CA 516C AT&T CORP. 728   2010-10-27   
559-769 2 Woodlake CA 516C AT&T CORP. 728   2010-10-27   
559-793 4 Porterville CA 516C AT&T CORP. 728   2008-04-15   
559-802 5 Visalia CA 516C AT&T CORP. 728   2011-08-26   
559-821 8 Coalinga CA 516C AT&T CORP. 728   2010-10-27   
559-823 2 Orange Cove CA 516C AT&T CORP. 728   2010-10-27   
559-847 2 Parlier CA 516C AT&T CORP. 728   2010-10-27   
559-869 6 Kingsburg CA 516C AT&T CORP. 728   2010-10-27   
559-898 3 Selma CA 516C AT&T CORP. 728   2010-10-27   
559-922 5 Laton CA 516C AT&T CORP. 728   2010-10-27   
559-940 7 Clovis CA 516C AT&T CORP. 728   2008-04-15   
559-966 2 Springville CA 516C AT&T CORP. 728   2025-01-15   
559-997 1 Lemoore CA 516C AT&T CORP. 728   2010-10-27   

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

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