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: 689

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
650-689 A Millbrae CA SNFCCAFJDS0  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722      
650-689 0 Millbrae CA SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2016-09-19   
650-689 1 Millbrae CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2016-04-24   
650-689 2 Millbrae CA SNFCCAFJDS0  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722      
650-689 3 Millbrae CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2016-04-24   
650-689 4 Millbrae CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2021-10-29   
650-689 5 Millbrae CA OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722      
650-689 6 Millbrae CA SNFCCAFJDS0  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722      
650-689 7 Millbrae CA SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2016-10-08   
650-689 8 Millbrae CA SNFCCAFJDS0  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722      
650-689 9 Millbrae CA SNFCCAMM8MD  973E RACE TELECOMMUNICATIONS, INC. - CA 722   2016-11-20   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.