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
650-617 A Palo Alto CA PLALCA02DS0  9740 PACIFIC BELL 722      
650-617 0 Palo Alto CA   9740 PACIFIC BELL 722      
650-617 1 Palo Alto CA   9740 PACIFIC BELL 722      
650-617 2 Palo Alto CA   9740 PACIFIC BELL 722      
650-617 3 Palo Alto CA   9740 PACIFIC BELL 722      
650-617 4 Palo Alto CA   9740 PACIFIC BELL 722      
650-617 5 Palo Alto CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2019-04-29   
650-617 6 Palo Alto CA   9740 PACIFIC BELL 722      
650-617 7 Palo Alto CA   9740 PACIFIC BELL 722      
650-617 8 Palo Alto CA   9740 PACIFIC BELL 722      
650-617 9 Palo Alto CA   9740 PACIFIC BELL 722      

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

Sponsored by: VoiceMeUp - Corporate VoIP Services

Like this site? We accept donations via PayPal.