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: 470

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
650-470 A Palo Alto CA PLALCA02DS0  9740 PACIFIC BELL 722      
650-470 0 Palo Alto CA PLALCA02DS0  9740 PACIFIC BELL 722      
650-470 1 Palo Alto CA PLALCA02DS0  9740 PACIFIC BELL 722      
650-470 2 Palo Alto CA PLALCA02DS0  9740 PACIFIC BELL 722      
650-470 3 Palo Alto CA PLALCA02DS0  9740 PACIFIC BELL 722      
650-470 4 Palo Alto CA PLALCA02DS0  9740 PACIFIC BELL 722      
650-470 5 Palo Alto CA PLALCA02DS0  9740 PACIFIC BELL 722      
650-470 6 Palo Alto CA PLALCA02DS0  9740 PACIFIC BELL 722      
650-470 7 Palo Alto CA PLALCA02DS0  9740 PACIFIC BELL 722      
650-470 8 Palo Alto CA PLALCA02DS0  9740 PACIFIC BELL 722      
650-470 9 Palo Alto CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2020-12-14   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.