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
650-264 A San Carlos-Belmont CA SNFCCA21DS3  7421 AT&T LOCAL 722      
650-264 1 San Carlos-Belmont CA   7421 AT&T LOCAL 722      
650-264 2 San Carlos-Belmont CA   7262 XO CALIFORNIA, INC. 722   2005-09-15   
650-264 3 San Carlos-Belmont CA   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2010-02-15   
650-264 4 San Carlos-Belmont CA   7262 XO CALIFORNIA, INC. 722   2005-09-15   
650-264 5 San Carlos-Belmont CA   7262 XO CALIFORNIA, INC. 722   2005-09-15   
650-264 6 San Carlos-Belmont CA   8322 MPOWER COMMUNICATIONS CORP - CA 722   2004-02-02   
650-264 7 San Carlos-Belmont CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2005-11-13   
650-264 8 San Carlos-Belmont CA   516C AT&T CORP. 722   2006-06-30   
650-264 9 San Carlos-Belmont CA   981E BANDWIDTH.COM CLEC, LLC - CA 722   2010-08-14   

Last updated: Tue, 31 Dec 2019 02:37:20 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.