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: FRSNCA0102Z

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
559-464 2 Terra Bella CA 515J IP HORIZON LLC 728      
559-465 1 Three Rivers CA 515J IP HORIZON LLC 728      
559-465 2 Three Rivers CA 515J IP HORIZON LLC 728      
559-466 1 Tipton CA 515J IP HORIZON LLC 728      
559-466 2 Tipton CA 515J IP HORIZON LLC 728      
559-467 1 Tulare CA 515J IP HORIZON LLC 728      
559-467 2 Tulare CA 515J IP HORIZON LLC 728      
559-468 1 Woodlake CA 515J IP HORIZON LLC 728      
559-468 2 Woodlake CA 515J IP HORIZON LLC 728      
559-471 1 Visalia CA 515J IP HORIZON LLC 728      
559-471 2 Visalia CA 515J IP HORIZON LLC 728      
559-471 4 Visalia CA 515J IP HORIZON LLC 728      
559-472 1 Clovis CA 515J IP HORIZON LLC 728      
559-472 2 Clovis CA 515J IP HORIZON LLC 728      
559-473 0 Fresno CA 515J IP HORIZON LLC 728      
559-473 1 Fresno CA 515J IP HORIZON LLC 728      
559-473 2 Fresno CA 515J IP HORIZON LLC 728      
559-473 4 Fresno CA 515J IP HORIZON LLC 728      
559-581 A Fresno CA 515J IP HORIZON LLC 728      
559-975 1 Madera CA 515J IP HORIZON LLC 728      
559-975 2 Madera CA 515J IP HORIZON LLC 728      
559-975 4 Madera CA 515J IP HORIZON LLC 728      

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Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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