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: 866

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
650-866 A South San Francisco CA SNBUCA02DS0  9740 PACIFIC BELL 722      
650-866 0 South San Francisco CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2014-03-25   
650-866 1 South San Francisco CA   649C ONVOY, LLC - CA 722   2014-12-23   
650-866 2 South San Francisco CA   9740 PACIFIC BELL 722      
650-866 3 South San Francisco CA   9740 PACIFIC BELL 722      
650-866 4 South San Francisco CA   9740 PACIFIC BELL 722      
650-866 5 South San Francisco CA   981E BANDWIDTH.COM CLEC, LLC - CA 722   2008-11-21   
650-866 6 South San Francisco CA   9740 PACIFIC BELL 722      
650-866 7 South San Francisco CA   9740 PACIFIC BELL 722      
650-866 8 South San Francisco CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2014-04-27   
650-866 9 South San Francisco CA   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2012-08-30   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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