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: FRSNCA01DS5

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
559-205 A Visalia CA 373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 728      
559-216 A Fresno CA 373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 728      
559-374 A Fresno CA 373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 728      
559-525 A San Joaquin CA 373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 728      
559-837 A Tulare CA 373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 728      
559-854 A Porterville CA 373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 728      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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