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
650-405 A Los Altos CA   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2018-06-22   
650-405 0 Los Altos CA   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2020-04-02   
650-405 1 Los Altos CA   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2018-12-20   
650-405 2 Los Altos CA   506J TWILIO INTERNATIONAL, INC. 722   2020-10-01   
650-405 3 Los Altos CA   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2020-09-09   
650-405 5 Los Altos CA   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2019-12-22   
650-405 6 Los Altos CA   7610 COMCAST PHONE OF CALIFORNIA, LLC - CA 722   2019-05-09   
650-405 7 Los Altos CA   649C ONVOY, LLC - CA 722   2018-12-23   
650-405 8 Los Altos CA   649C ONVOY, LLC - CA 722   2018-12-23   
650-405 9 Los Altos CA   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2018-06-22   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.