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: VNTRCA02DS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
805-223 A Ventura Central CA 9740 PACIFIC BELL 730      
805-585 A Ventura Central CA 9740 PACIFIC BELL 730      
805-641 A Ventura Central CA 9740 PACIFIC BELL 730      
805-643 A Ventura Central CA 9740 PACIFIC BELL 730      
805-648 A Ventura Central CA 9740 PACIFIC BELL 730      
805-651 A Ventura Central CA 9740 PACIFIC BELL 730      
805-652 A Ventura Central CA 9740 PACIFIC BELL 730      
805-653 A Ventura Central CA 9740 PACIFIC BELL 730      
805-667 A Ventura Central CA 9740 PACIFIC BELL 730      

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.