Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 650 [Rate centres in NPA 650] [Dial plan for NPA 650]

NXX: 289

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
650-289 A Palo Alto CA PLALCA02DS0  9740 PACIFIC BELL 722      
650-289 0 Palo Alto CA   9740 PACIFIC BELL 722      
650-289 1 Palo Alto CA   9740 PACIFIC BELL 722      
650-289 2 Palo Alto CA   9740 PACIFIC BELL 722      
650-289 3 Palo Alto CA   9740 PACIFIC BELL 722      
650-289 4 Palo Alto CA   9740 PACIFIC BELL 722      
650-289 5 Palo Alto CA   9740 PACIFIC BELL 722      
650-289 6 Palo Alto CA   9740 PACIFIC BELL 722      
650-289 7 Palo Alto CA   9740 PACIFIC BELL 722      
650-289 8 Palo Alto CA   6529 T-MOBILE USA, INC. 722   2011-02-20   
650-289 9 Palo Alto CA   9740 PACIFIC BELL 722      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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