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: SNFCCAMM8MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
415-400 A San Francisco: Central DA CA 973E RACE TELECOMMUNICATIONS, INC. - CA 722      
415-400 1 San Francisco: Central DA CA 973E RACE TELECOMMUNICATIONS, INC. - CA 722   2009-03-16   
628-244 2 Belvedere CA 973E RACE TELECOMMUNICATIONS, INC. - CA 722   2016-11-20   
628-253 9 San Rafael CA 973E RACE TELECOMMUNICATIONS, INC. - CA 722   2016-11-20   
628-254 9 Sausalito CA 973E RACE TELECOMMUNICATIONS, INC. - CA 722   2016-11-20   
628-256 9 San Francisco: Montrose-Evergreen DA CA 973E RACE TELECOMMUNICATIONS, INC. - CA 722   2016-12-02   
628-257 A Mill Valley CA 973E RACE TELECOMMUNICATIONS, INC. - CA 722      
628-257 0 Mill Valley CA 973E RACE TELECOMMUNICATIONS, INC. - CA 722   2016-12-25   
650-206 1 Woodside CA 973E RACE TELECOMMUNICATIONS, INC. - CA 722   2016-11-20   
650-226 9 San Carlos-Belmont CA 973E RACE TELECOMMUNICATIONS, INC. - CA 722   2016-11-20   
650-410 9 South San Francisco CA 973E RACE TELECOMMUNICATIONS, INC. - CA 722   2016-11-20   
650-448 2 Mountain View CA 973E RACE TELECOMMUNICATIONS, INC. - CA 722   2016-11-20   
650-466 9 San Francisco: Juniper DA CA 973E RACE TELECOMMUNICATIONS, INC. - CA 722   2016-11-20   
650-476 0 Half Moon Bay CA 973E RACE TELECOMMUNICATIONS, INC. - CA 722   2016-11-20   
650-484 2 San Mateo CA 973E RACE TELECOMMUNICATIONS, INC. - CA 722   2016-11-20   
650-516 8 Pacifica CA 973E RACE TELECOMMUNICATIONS, INC. - CA 722   2016-11-20   
650-608 9 San Francisco: Juniper DA CA 973E RACE TELECOMMUNICATIONS, INC. - CA 722   2016-11-26   
650-689 9 Millbrae CA 973E RACE TELECOMMUNICATIONS, INC. - CA 722   2016-11-20   
650-779 1 Redwood City CA 973E RACE TELECOMMUNICATIONS, INC. - CA 722   2016-11-20   
707-329 9 Sebastopol CA 973E RACE TELECOMMUNICATIONS, INC. - CA 722   2016-11-20   
707-589 3 Bodega Bay CA 973E RACE TELECOMMUNICATIONS, INC. - CA 722   2016-11-14   
707-710 2 Santa Rosa CA 973E RACE TELECOMMUNICATIONS, INC. - CA 722   2016-11-20   
707-819 8 Napa CA 973E RACE TELECOMMUNICATIONS, INC. - CA 722   2016-11-20   
707-872 2 Occidental CA 973E RACE TELECOMMUNICATIONS, INC. - CA 722   2016-11-14   

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.