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: MRPKCA12DS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
805-378 A Moorpark CA 9740 PACIFIC BELL 730      
805-517 A Moorpark CA 9740 PACIFIC BELL 730      
805-518 A Moorpark CA 9740 PACIFIC BELL 730      
805-523 A Moorpark CA 9740 PACIFIC BELL 730      
805-529 A Moorpark CA 9740 PACIFIC BELL 730      
805-530 A Moorpark CA 9740 PACIFIC BELL 730      
805-531 A Moorpark CA 9740 PACIFIC BELL 730      
805-532 A Moorpark CA 9740 PACIFIC BELL 730      
805-552 A Moorpark CA 9740 PACIFIC BELL 730      
805-553 A Moorpark CA 9740 PACIFIC BELL 730      

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.