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: LSAJCAWZDS2

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
310-683 7 Redondo CA 3662 PACIFIC CENTREX SERVICES, INC. - CA 730   2005-11-06   
323-472 A Los Angeles: DA 14 CA 3662 PACIFIC CENTREX SERVICES, INC. - CA 730      
818-670 A Van Nuys CA 3662 PACIFIC CENTREX SERVICES, INC. - CA 730      
818-824 A North Hollywood CA 3662 PACIFIC CENTREX SERVICES, INC. - CA 730      

Last updated: Fri, 13 May 2022 22:16:13 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.