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: 228

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
650-228 A South San Francisco CA HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
650-228 0 South San Francisco CA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
650-228 1 South San Francisco CA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
650-228 2 South San Francisco CA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
650-228 3 South San Francisco CA   6529 T-MOBILE USA, INC. 722   2006-05-04   
650-228 4 South San Francisco CA   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2003-06-11   
650-228 5 South San Francisco CA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
650-228 6 South San Francisco CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2008-07-15   
650-228 7 South San Francisco CA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
650-228 8 South San Francisco CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2008-06-01   
650-228 9 South San Francisco CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2010-02-05   

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

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