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.
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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
650-779 6 Redwood City CA SNJSCAYB0MD  722   2015-04-01   
650-804 7 Palo Alto CA SNJSCAYB0MD  722   2008-03-08   
650-810 A Mountain View CA SNJSCAYB0MD  722      
650-810 0 Mountain View CA SNJSCAYB0MD  722      
650-810 1 Mountain View CA SNJSCAYB0MD  722      
650-810 2 Mountain View CA SNJSCAYB0MD  722      
650-810 8 Mountain View CA SNJSCAYB0MD  722      
650-810 9 Mountain View CA SNJSCAYB0MD  722      
650-832 A San Carlos-Belmont CA SNJSCAYB0MD  722      
650-832 0 San Carlos-Belmont CA SNJSCAYB0MD  722      
650-832 6 San Carlos-Belmont CA SNJSCAYB0MD  722      
650-931 A San Mateo CA SNJSCAYB0MD  722      
650-931 0 San Mateo CA SNJSCAYB0MD  722      
650-931 1 San Mateo CA SNJSCAYB0MD  722      
650-931 2 San Mateo CA SNJSCAYB0MD  722      
650-931 3 San Mateo CA SNJSCAYB0MD  722      
650-931 8 San Mateo CA SNJSCAYB0MD  722      
650-931 9 San Mateo CA SNJSCAYB0MD  722      
650-933 9 Mountain View CA SNJSCAYB0MD  722   2012-03-06   
650-963 8 Mountain View CA SNJSCAYB0MD  722   2007-12-27   
657-200 4 Westminster CA IRVNCASM1MD  730   2010-03-11   
657-212 8 Santa Ana CA IRVNCASM1MD  730   2012-01-25   
657-218 3 Santa Ana CA IRVNCASM1MD  730   2013-08-06   
657-218 7 Santa Ana CA IRVNCASM1MD  730   2013-09-19   
657-221 4 Orange CA IRVNCASM1MD  730   2013-05-23   
657-227 4 Westminster CA IRVNCASM1MD  730   2014-06-18   
657-227 5 Westminster CA IRVNCASM1MD  730   2015-03-22   
657-229 6 Santa Ana CA IRVNCASM1MD  730   2010-04-26   
657-229 7 Santa Ana CA IRVNCASM1MD  730   2010-04-26   
657-229 8 Santa Ana CA IRVNCASM1MD  730   2010-04-26   
657-232 6 Santa Ana CA IRVNCASM1MD  730   2013-12-29   
657-235 5 Santa Ana CA IRVNCASM1MD  730   2012-01-02   
657-257 3 Westminster CA IRVNCASM1MD  730   2015-11-22   
657-261 4 Santa Ana CA IRVNCASM1MD  730   2014-12-29   
657-266 3 Santa Ana CA IRVNCASM1MD  730   2015-07-15   
657-267 3 Santa Ana CA IRVNCASM1MD  730   2017-03-10   
657-267 4 Santa Ana CA IRVNCASM1MD  730   2017-03-10   
657-274 7 Orange CA IRVNCASM1MD  730   2015-07-24   
657-275 A Placentia CA IRVNCASM1MD  730      
657-275 6 Placentia CA IRVNCASM1MD  730   2015-08-28   
657-275 7 Placentia CA IRVNCASM1MD  730   2015-08-28   
657-341 7 Brea CA IRVNCASM1MD  730   2017-03-12   
657-605 A Orange CA IRVNCASM1MD  730      
657-605 7 Orange CA IRVNCASM1MD  730   2022-08-15   
657-605 8 Orange CA IRVNCASM1MD  730   2022-08-15   
657-622 4 Santa Ana CA IRVNCASM1MD  730   2009-11-27   
657-859 2 Santa Ana CA IRVNCASM1MD  730   2009-12-18   
657-859 5 Santa Ana CA IRVNCASM1MD  730   2009-12-24   
661-208 4 Palmdale: Palmdale DA CA IRVNCASM1MD  730   2008-05-04   
661-233 8 Palmdale: Palmdale DA CA IRVNCASM1MD  730   2008-05-04   

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

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