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: SNFCCASY5MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
408-389 A San Jose: South DA CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2011-07-04   
408-662 A San Jose: North DA CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2011-07-17   
408-684 A San Jose: North DA CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2010-07-26   
408-717 A San Jose: South DA CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
408-912 A San Jose: South DA CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2008-07-12   
408-940 A Sunnyvale CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2008-07-12   
415-335 A San Francisco: Juniper DA CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
415-463 A San Francisco: Montrose-Evergreen DA CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2012-07-16   
415-513 A San Francisco: Central DA CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
415-528 A San Francisco: Juniper DA CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2012-03-22   
415-795 A San Francisco: Central DA CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2010-11-13   
415-813 A San Francisco: Central DA CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2011-01-14   
415-968 A Mill Valley CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2006-02-18   
510-254 A Oakland: Alameda DA CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2011-11-12   
510-371 A Fremont-Newark: Main DA CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2008-10-12   
650-497 A Palo Alto CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
650-498 A Palo Alto CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
650-721 A Palo Alto CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
650-723 A Palo Alto CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
650-724 A Palo Alto CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
650-725 A Palo Alto CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
650-736 A Palo Alto CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
650-763 A South San Francisco CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
707-382 A Eureka CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2011-09-30   
707-392 A Vacaville CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2012-09-14   
925-230 A Dublin-San Ramon CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
925-357 A Walnut Creek CA 8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2011-11-04   

Last updated: Sun, 10 Nov 2019 13:49:34 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.