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.

NPA: 408 [Rate centres in NPA 408] [Dial plan for NPA 408]

NXX: 731

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
408-731 A Sunnyvale CA SNVACA01DS1  9740 PACIFIC BELL 722      
408-731 0 Sunnyvale CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2009-10-02   
408-731 1 Sunnyvale CA SNVACA01DS1  9740 PACIFIC BELL 722      
408-731 2 Sunnyvale CA SNVACA01DS1  9740 PACIFIC BELL 722      
408-731 3 Sunnyvale CA SNVACA01DS1  9740 PACIFIC BELL 722      
408-731 4 Sunnyvale CA SNVACA01DS1  9740 PACIFIC BELL 722      
408-731 5 Sunnyvale CA SNVACA01DS1  9740 PACIFIC BELL 722      
408-731 6 Sunnyvale CA SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2006-03-25   
408-731 7 Sunnyvale CA SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2006-01-09   
408-731 8 Sunnyvale CA SNVACA01DS1  9740 PACIFIC BELL 722      
408-731 9 Sunnyvale CA FRMTCAEDDS2  7262 XO CALIFORNIA, INC. 722   2006-09-15   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.