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: FRSNCA01X3Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
209-220 A Fresno CA 6967 33 WIRELESS INC. 728      
559-369 A Fresno CA 252F WIDE VOICE, LLC - CA 728   2024-01-29   
559-670 A Hanford CA 252F WIDE VOICE, LLC - CA 728      

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

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