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: 557

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
650-557 A Pacifica CA PCFCCA11DS0  9740 PACIFIC BELL 722      
650-557 0 Pacifica CA   9740 PACIFIC BELL 722      
650-557 1 Pacifica CA   9740 PACIFIC BELL 722      
650-557 2 Pacifica CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2005-01-30   
650-557 3 Pacifica CA   981E BANDWIDTH.COM CLEC, LLC - CA 722   2010-09-09   
650-557 4 Pacifica CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2003-08-26   
650-557 5 Pacifica CA   508J CENTURYLINK COMMUNICATIONS, LLC 722   2015-02-02   
650-557 6 Pacifica CA   6529 T-MOBILE USA, INC. 722   2008-02-04   
650-557 7 Pacifica CA   9262 UTILITY TELECOM GROUP, LLC - CA 722   2006-06-14   
650-557 8 Pacifica CA   6529 T-MOBILE USA, INC. 722   2007-04-12   
650-557 9 Pacifica CA   9740 PACIFIC BELL 722      

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

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