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: SNLOCA01XFX

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
805-221 A Paso Robles CA 649C ONVOY, LLC - CA 740      
805-250 A San Luis Obispo CA 649C ONVOY, LLC - CA 740      
805-257 A Paso Robles CA 649C ONVOY, LLC - CA 740      
805-365 A Santa Margarita CA 649C ONVOY, LLC - CA 740      
805-456 A Santa Barbara CA 649C ONVOY, LLC - CA 740      
805-510 A Carrisa Plains CA 649C ONVOY, LLC - CA 740      
805-600 A Morro Bay CA 649C ONVOY, LLC - CA 740      
805-817 A San Luis Obispo CA 649C ONVOY, LLC - CA 740      
805-831 A Morro Bay CA 649C ONVOY, LLC - CA 740      
820-300 A Guadalupe CA 649C ONVOY, LLC - CA 740      
820-380 A Pismo Beach CA 649C ONVOY, LLC - CA 740      
820-998 A Atascadero CA 649C ONVOY, LLC - CA 740   2024-08-04   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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