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: SNJSCA02DS2

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
408-352 A San Jose: West DA CA 7421 AT&T LOCAL 722      
408-352 0 San Jose: West DA CA 7421 AT&T LOCAL 722      
408-352 1 San Jose: West DA CA 7421 AT&T LOCAL 722      
408-352 2 San Jose: West DA CA 7421 AT&T LOCAL 722      
408-352 3 San Jose: West DA CA 7421 AT&T LOCAL 722      
408-352 7 San Jose: West DA CA 7421 AT&T LOCAL 722      
408-352 9 San Jose: West DA CA 7421 AT&T LOCAL 722      
408-413 6 Gilroy CA 7421 AT&T LOCAL 722   2002-12-30   
408-470 A Sunnyvale CA 7421 AT&T LOCAL 722      
408-470 1 Sunnyvale CA 7421 AT&T LOCAL 722      
408-518 A San Jose: North DA CA 7421 AT&T LOCAL 722      
408-518 3 San Jose: North DA CA 7421 AT&T LOCAL 722      
408-518 4 San Jose: North DA CA 7421 AT&T LOCAL 722      
408-518 5 San Jose: North DA CA 7421 AT&T LOCAL 722      
408-518 6 San Jose: North DA CA 7421 AT&T LOCAL 722      
408-518 7 San Jose: North DA CA 7421 AT&T LOCAL 722      
408-705 A San Jose: South DA CA 7421 AT&T LOCAL 722      
408-705 9 San Jose: South DA CA 7421 AT&T LOCAL 722      
408-752 8 Sunnyvale CA 7421 AT&T LOCAL 722   2010-06-06   
510-493 4 Fremont-Newark: Main DA CA 7421 AT&T LOCAL 722   2003-09-23   
831-460 5 Santa Cruz CA 7421 AT&T LOCAL 722   2005-11-28   
925-241 3 Dublin-San Ramon CA 7421 AT&T LOCAL 722   2002-09-03   

Last updated: Tue, 04 May 2021 15:04:27 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.