Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

OCN: 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
650-241 6 Redwood City CA SNJSCAYB0MD  722   2008-11-16   
650-241 7 Redwood City CA SNJSCAYB0MD  722   2007-12-27   
650-243 A South San Francisco CA SNJSCAYB0MD  722      
650-243 2 South San Francisco CA SNJSCAYB0MD  722      
650-243 3 South San Francisco CA SNJSCAYB0MD  722      
650-243 4 South San Francisco CA SNJSCAYB0MD  722      
650-243 5 South San Francisco CA SNJSCAYB0MD  722      
650-243 6 South San Francisco CA SNJSCAYB0MD  722      
650-243 9 South San Francisco CA SNJSCAYB0MD  722      
650-264 6 San Carlos-Belmont CA SNJSCAYB0MD  722   2004-02-02   
650-267 7 South San Francisco CA SNJSCAYB0MD  722   2004-02-02   
650-314 7 Mountain View CA SNJSCAYB0MD  722   2008-11-16   
650-393 6 San Mateo CA SNJSCAYB0MD  722   2004-02-02   
650-393 8 San Mateo CA SNJSCAYB0MD  722   2008-09-04   
650-409 A Millbrae CA SNJSCAYB0MD  722      
650-409 0 Millbrae CA SNJSCAYB0MD  722      
650-409 4 Millbrae CA SNJSCAYB0MD  722      
650-410 4 South San Francisco CA SNJSCAYB0MD  722   2016-08-28   
650-416 A South San Francisco CA SNJSCAYB0MD  722      
650-416 0 South San Francisco CA SNJSCAYB0MD  722      
650-416 2 South San Francisco CA SNJSCAYB0MD  722      
650-416 3 South San Francisco CA SNJSCAYB0MD  722      
650-416 5 South San Francisco CA SNJSCAYB0MD  722      
650-416 7 South San Francisco CA SNJSCAYB0MD  722      
650-417 A Mountain View CA SNJSCAYB0MD  722      
650-417 0 Mountain View CA SNJSCAYB0MD  722      
650-417 2 Mountain View CA SNJSCAYB0MD  722      
650-417 6 Mountain View CA SNJSCAYB0MD  722      
650-417 7 Mountain View CA SNJSCAYB0MD  722      
650-421 A Redwood City CA SNJSCAYB0MD  722      
650-421 0 Redwood City CA SNJSCAYB0MD  722      
650-421 2 Redwood City CA SNJSCAYB0MD  722      
650-421 4 Redwood City CA SNJSCAYB0MD  722      
650-421 7 Redwood City CA SNJSCAYB0MD  722      
650-421 8 Redwood City CA SNJSCAYB0MD  722      
650-421 9 Redwood City CA SNJSCAYB0MD  722      
650-422 7 Palo Alto CA SNJSCAYB0MD  722   2013-08-31   
650-426 6 Mountain View CA SNJSCAYB0MD  722   2012-03-12   
650-433 2 Palo Alto CA SNJSCAYB0MD  722   2012-01-12   
650-433 3 Palo Alto CA SNJSCAYB0MD  722   2007-12-27   
650-434 A Woodside CA SNJSCAYB0MD  722      
650-434 9 Woodside CA SNJSCAYB0MD  722      
650-443 A Millbrae CA SNJSCAYB0MD  722      
650-443 1 Millbrae CA SNJSCAYB0MD  722      
650-443 2 Millbrae CA SNJSCAYB0MD  722      
650-443 3 Millbrae CA SNJSCAYB0MD  722      
650-443 4 Millbrae CA SNJSCAYB0MD  722      
650-443 9 Millbrae CA SNJSCAYB0MD  722      
650-450 5 Mountain View CA SNJSCAYB0MD  722   2004-02-02   
650-458 2 San Mateo CA SNJSCAYB0MD  722   2008-11-16   

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Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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