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: 650 [Rate centres in NPA 650] [Dial plan for NPA 650]

NXX:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
650-835 A South San Francisco CA SNFCCAMMDSA  4129 O1 COMMUNICATIONS, INC. - CA 722      
650-835 0 South San Francisco CA   4129 O1 COMMUNICATIONS, INC. - CA 722      
650-835 1 South San Francisco CA   4129 O1 COMMUNICATIONS, INC. - CA 722      
650-835 2 South San Francisco CA   4129 O1 COMMUNICATIONS, INC. - CA 722      
650-835 3 South San Francisco CA   7262 XO CALIFORNIA, INC. 722   2010-11-04   
650-835 4 South San Francisco CA   4129 O1 COMMUNICATIONS, INC. - CA 722      
650-835 5 South San Francisco CA   7262 XO CALIFORNIA, INC. 722   2010-11-04   
650-835 6 South San Francisco CA   7262 XO CALIFORNIA, INC. 722   2010-11-04   
650-835 7 South San Francisco CA   649C ONVOY, LLC - CA 722   2009-12-24   
650-835 8 South San Francisco CA   258E YMAX COMMUNICATIONS CORP. - CA 722   2010-10-26   
650-835 9 South San Francisco CA   258E YMAX COMMUNICATIONS CORP. - CA 722   2010-10-26   

Last updated: Thu, 10 Sep 2020 02:15:24 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.