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
650-471 A Los Altos CA SNJSCAYB0MD  722      
650-471 0 Los Altos CA SNJSCAYB0MD  722      
650-479 A Half Moon Bay CA SNJSCAYB0MD  722      
650-479 9 Half Moon Bay CA SNJSCAYB0MD  722      
650-487 A La Honda CA SNJSCAYB0MD  722      
650-487 9 La Honda CA SNJSCAYB0MD  722      
650-503 A Redwood City CA SNJSCAYB0MD  722      
650-503 0 Redwood City CA SNJSCAYB0MD  722      
650-503 2 Redwood City CA SNJSCAYB0MD  722      
650-503 5 Redwood City CA SNJSCAYB0MD  722      
650-503 7 Redwood City CA SNJSCAYB0MD  722      
650-516 A Pacifica CA SNJSCAYB0MD  722      
650-516 0 Pacifica CA SNJSCAYB0MD  722      
650-516 9 Pacifica CA SNJSCAYB0MD  722      
650-517 A San Carlos-Belmont CA SNJSCAYB0MD  722      
650-517 1 San Carlos-Belmont CA SNJSCAYB0MD  722      
650-517 2 San Carlos-Belmont CA SNJSCAYB0MD  722      
650-517 5 San Carlos-Belmont CA SNJSCAYB0MD  722      
650-517 8 San Carlos-Belmont CA SNJSCAYB0MD  722      
650-517 9 San Carlos-Belmont CA SNJSCAYB0MD  722      
650-521 8 Palo Alto CA SNJSCAYB0MD  722   2007-09-10   
650-522 3 San Mateo CA SNJSCAYB0MD  722   2009-04-23   
650-532 A San Mateo CA SNJSCAYB0MD  722      
650-532 0 San Mateo CA SNJSCAYB0MD  722      
650-532 1 San Mateo CA SNJSCAYB0MD  722   2009-10-11   
650-532 2 San Mateo CA SNJSCAYB0MD  722      
650-532 6 San Mateo CA SNJSCAYB0MD  722      
650-535 A Moss Beach CA SNJSCAYB0MD  722      
650-535 9 Moss Beach CA SNJSCAYB0MD  722      
650-538 A Pescadero CA SNJSCAYB0MD  722      
650-538 9 Pescadero CA SNJSCAYB0MD  722      
650-543 A Palo Alto CA SNJSCAYB0MD  722      
650-546 3 Palo Alto CA SNJSCAYB0MD  722   2015-11-26   
650-550 3 San Francisco: Juniper DA CA SNJSCAYB0MD  722   2008-09-11   
650-618 7 Palo Alto CA SNJSCAYB0MD  722   2008-03-08   
650-645 1 San Mateo CA SNJSCAYB0MD  722   2007-03-11   
650-645 6 San Mateo CA SNJSCAYB0MD  722   2007-03-11   
650-645 7 San Mateo CA SNJSCAYB0MD  722   2007-03-11   
650-665 8 Palo Alto CA SNJSCAYB0MD  722   2014-10-09   
650-681 A Palo Alto CA SNJSCAYB0MD  722      
650-681 3 Palo Alto CA SNJSCAYB0MD  722   2010-03-08   
650-681 5 Palo Alto CA SNJSCAYB0MD  722   2009-10-11   
650-681 6 Palo Alto CA SNJSCAYB0MD  722   2009-10-11   
650-730 5 San Carlos-Belmont CA SNJSCAYB0MD  722   2008-10-16   
650-737 4 South San Francisco CA SNJSCAYB0MD  722   2008-11-16   
650-739 4 Palo Alto CA SNJSCAYB0MD  722   2008-03-08   
650-746 3 San Francisco: Juniper DA CA SNJSCAYB0MD  722   2002-10-17   
650-746 5 San Francisco: Juniper DA CA SNJSCAYB0MD  722   2014-11-28   
650-772 3 Mountain View CA SNJSCAYB0MD  722   2015-01-17   
650-779 3 Redwood City CA SNJSCAYB0MD  722   2015-04-01   

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

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