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: SNVACA11DS0

<< 1 2

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
408-745 4 Sunnyvale CA 9740 PACIFIC BELL 722      
408-745 5 Sunnyvale CA 9740 PACIFIC BELL 722      
408-745 6 Sunnyvale CA 9740 PACIFIC BELL 722      
408-745 7 Sunnyvale CA 9740 PACIFIC BELL 722      
408-745 8 Sunnyvale CA 9740 PACIFIC BELL 722      
408-747 A Sunnyvale CA 9740 PACIFIC BELL 722      
408-747 0 Sunnyvale CA 9740 PACIFIC BELL 722      
408-747 1 Sunnyvale CA 9740 PACIFIC BELL 722      
408-747 3 Sunnyvale CA 9740 PACIFIC BELL 722      
408-747 4 Sunnyvale CA 9740 PACIFIC BELL 722      
408-747 5 Sunnyvale CA 9740 PACIFIC BELL 722      
408-747 6 Sunnyvale CA 9740 PACIFIC BELL 722      
408-747 8 Sunnyvale CA 9740 PACIFIC BELL 722      
408-752 A Sunnyvale CA 9740 PACIFIC BELL 722      
408-752 0 Sunnyvale CA 9740 PACIFIC BELL 722      
408-752 3 Sunnyvale CA 9740 PACIFIC BELL 722      
408-752 7 Sunnyvale CA 9740 PACIFIC BELL 722      
408-752 9 Sunnyvale CA 9740 PACIFIC BELL 722      
408-756 A Sunnyvale CA 9740 PACIFIC BELL 722      
408-936 A Sunnyvale CA 9740 PACIFIC BELL 722      

<< 1 2

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.