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
650-388 A Palo Alto CA SNFCCAMKDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
650-388 0 Palo Alto CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2006-10-13   
650-388 1 Palo Alto CA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
650-388 2 Palo Alto CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2007-05-10   
650-388 3 Palo Alto CA   7262 XO CALIFORNIA, INC. 722   2004-09-24   
650-388 4 Palo Alto CA   7262 XO CALIFORNIA, INC. 722   2004-09-24   
650-388 5 Palo Alto CA   9262 UTILITY TELECOM GROUP, LLC - CA 722   2006-06-14   
650-388 6 Palo Alto CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2006-11-29   
650-388 7 Palo Alto CA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
650-388 8 Palo Alto CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2006-07-07   
650-388 9 Palo Alto CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2011-08-29   

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.