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
650-830 A San Carlos-Belmont CA SNFCCASYDS0  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
650-830 0 San Carlos-Belmont CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
650-830 1 San Carlos-Belmont CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2013-09-23   
650-830 2 San Carlos-Belmont CA   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2018-02-02   
650-830 3 San Carlos-Belmont CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2014-08-25   
650-830 4 San Carlos-Belmont CA   649C ONVOY, LLC - CA 722   2019-03-22   
650-830 5 San Carlos-Belmont CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2011-04-07   
650-830 6 San Carlos-Belmont CA   649C ONVOY, LLC - CA 722   2019-03-22   
650-830 7 San Carlos-Belmont CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2014-04-06   
650-830 8 San Carlos-Belmont CA   649C ONVOY, LLC - CA 722   2016-02-25   
650-830 9 San Carlos-Belmont CA   649C ONVOY, LLC - CA 722   2016-02-25   

Last updated: Wed, 10 Apr 2019 01:22:05 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.