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: 603

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
650-603 A Mountain View CA MTVWCA11DS1  9740 PACIFIC BELL 722      
650-603 0 Mountain View CA   981E BANDWIDTH.COM CLEC, LLC - CA 722   2010-07-02   
650-603 1 Mountain View CA   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2014-09-11   
650-603 2 Mountain View CA   9740 PACIFIC BELL 722      
650-603 3 Mountain View CA   9740 PACIFIC BELL 722      
650-603 4 Mountain View CA   9740 PACIFIC BELL 722      
650-603 5 Mountain View CA   649C ONVOY, LLC - CA 722   2014-09-26   
650-603 6 Mountain View CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2011-11-04   
650-603 7 Mountain View CA   9740 PACIFIC BELL 722      
650-603 8 Mountain View CA   9740 PACIFIC BELL 722      
650-603 9 Mountain View CA   9740 PACIFIC BELL 722      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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