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.

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
820-587 0 Santa Barbara CA 649C ONVOY, LLC - CA 740   2023-11-03   
820-758 0 Santa Barbara CA 649C ONVOY, LLC - CA 740   2023-11-03   
820-823 A Santa Ynez CA 649C ONVOY, LLC - CA 740      
820-823 2 Santa Ynez CA 649C ONVOY, LLC - CA 740   2023-11-03   
820-823 3 Santa Ynez CA 649C ONVOY, LLC - CA 740   2023-11-03   
820-823 4 Santa Ynez CA 649C ONVOY, LLC - CA 740   2023-11-03   
820-823 5 Santa Ynez CA 649C ONVOY, LLC - CA 740   2023-11-03   
820-823 6 Santa Ynez CA 649C ONVOY, LLC - CA 740   2023-11-03   
820-823 7 Santa Ynez CA 649C ONVOY, LLC - CA 740   2024-03-02   
820-823 8 Santa Ynez CA 649C ONVOY, LLC - CA 740   2023-04-06   

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Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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