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: CMTNCA01DS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
310-223 A Compton: Compton DA CA 9740 PACIFIC BELL 730      
310-603 A Compton: Compton DA CA 9740 PACIFIC BELL 730      
310-604 A Compton: Compton DA CA 9740 PACIFIC BELL 730      
310-608 A Compton: Compton DA CA 9740 PACIFIC BELL 730      
310-609 A Compton: Compton DA CA 9740 PACIFIC BELL 730      
310-637 A Compton: Compton DA CA 9740 PACIFIC BELL 730      
310-661 A Compton: Compton DA CA 9740 PACIFIC BELL 730      
310-668 A Compton: Compton DA CA 9740 PACIFIC BELL 730      
310-669 A Compton: Compton DA CA 9740 PACIFIC BELL 730      
310-687 A Compton: Compton DA CA 9740 PACIFIC BELL 730      
310-762 A Compton: Compton DA CA 9740 PACIFIC BELL 730      
310-763 A Compton: Compton DA CA 9740 PACIFIC BELL 730      
310-764 A Compton: Compton DA CA 9740 PACIFIC BELL 730      
310-884 A Compton: Compton DA CA 9740 PACIFIC BELL 730      
310-885 A Compton: Compton DA CA 9740 PACIFIC BELL 730      
310-886 A Compton: Compton DA CA 9740 PACIFIC BELL 730      
310-898 A Compton: Compton DA CA 9740 PACIFIC BELL 730      
323-774 A Los Angeles: DA 06 CA 9740 PACIFIC BELL 730      
323-979 A Los Angeles: DA 06 CA 9740 PACIFIC BELL 730      
424-338 A Compton: Compton DA CA 9740 PACIFIC BELL 730      

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

Sponsored by: VoiceMeUp - Corporate VoIP Services

Like this site? We accept donations via PayPal.