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: SNGRCAXFWMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
209-435 A Dos Palos CA 649C ONVOY, LLC - CA 728      
209-935 A Dos Palos CA 649C ONVOY, LLC - CA 728   2024-01-21   
559-235 A Dunlap CA 649C ONVOY, LLC - CA 728   2024-01-21   
559-236 A Grant Grove CA 649C ONVOY, LLC - CA 728      
559-379 A Lindsay CA 649C ONVOY, LLC - CA 728   2024-01-21   
559-808 A Lindsay CA 649C ONVOY, LLC - CA 728      
559-910 A Grant Grove CA 649C ONVOY, LLC - CA 728      
559-954 A Exeter CA 649C ONVOY, LLC - CA 728      

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

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