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: 679

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
650-679 A Redwood City CA SNFCCAMMDS0  485E ASTOUND BROADBAND, LLC - CA 722      
650-679 0 Redwood City CA   5562 METROPCS, INC. 722   2005-10-24   
650-679 1 Redwood City CA   5562 METROPCS, INC. 722   2005-10-24   
650-679 2 Redwood City CA   5562 METROPCS, INC. 722   2005-10-24   
650-679 3 Redwood City CA   5562 METROPCS, INC. 722   2005-10-24   
650-679 4 Redwood City CA   5562 METROPCS, INC. 722   2005-10-24   
650-679 5 Redwood City CA   5562 METROPCS, INC. 722   2005-10-24   
650-679 6 Redwood City CA   433E SONIC TELECOM, LLC - CA 722   2012-12-22   
650-679 7 Redwood City CA   649C ONVOY, LLC - CA 722   2013-12-02   
650-679 8 Redwood City CA   485E ASTOUND BROADBAND, LLC - CA 722      
650-679 9 Redwood City CA   485E ASTOUND BROADBAND, LLC - CA 722      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.