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
707-724 5 Vacaville CA   722   2014-07-03   
707-728 3 Guerneville CA   722   2013-08-03   
707-732 2 Sonoma CA   722   2013-01-17   
707-743 6 Potter Valley CA   722   2016-11-11   
707-744 2 Hopland CA   722   2013-12-14   
707-752 A Benicia CA SNJSCAYB0MD  722      
707-752 6 Benicia CA   722   2002-09-09   
707-752 8 Benicia CA   722      
707-754 4 Yountville CA   722   2002-04-01   
707-755 2 Santa Rosa CA   722   2013-10-14   
707-774 7 Petaluma: Main DA CA   722   2007-03-29   
707-774 8 Petaluma: Main DA CA   722   2007-03-29   
707-790 A Petaluma: Main DA CA SNJSCAYB0MD  722      
707-790 8 Petaluma: Main DA CA   722      
707-796 7 Petaluma: Swift DA CA   722   2002-08-21   
707-814 6 Geyserville CA   722   2016-02-03   
707-827 4 Sebastopol CA   722   2002-09-24   
707-835 2 Petaluma: Main DA CA   722   2017-05-28   
707-861 7 Sebastopol CA   722   2007-12-29   
707-874 7 Occidental CA   722   2017-03-10   
707-882 6 Point Arena CA   722   2011-04-22   
707-883 4 Upper Lake CA   722   2013-08-03   
707-890 4 Santa Rosa CA   722   2015-03-22   
707-921 A Santa Rosa CA SNJSCAYB0MD  722      
707-921 2 Santa Rosa CA   722      
707-921 3 Santa Rosa CA   722      
707-921 4 Santa Rosa CA   722      
707-931 7 Sonoma CA   722   2002-08-21   
707-955 8 Healdsburg CA   722   2016-10-10   
707-961 8 Fort Bragg CA   722   2016-11-24   
707-992 3 Petaluma: Swift DA CA   722   2007-12-29   
713-352 5 Apollo TX   560   2014-03-31   
713-487 A Houston TX HSTNTXPB6MD  560      
713-487 0 Houston TX   560   2009-12-24   
713-487 1 Houston TX   560   2009-12-24   
713-487 2 Houston TX   560   2009-12-24   
713-487 3 Houston TX   560   2009-12-24   
713-487 4 Houston TX   560   2009-12-24   
713-590 A Houston TX HSTNTXPB6MD  560      
713-595 A Houston TX HSTNTXPB6MD  560      
714-203 A Placentia CA IRVNCASM1MD  730      
714-203 0 Placentia CA   730      
714-210 A Santa Ana CA IRVNCASM1MD  730      
714-210 0 Santa Ana CA   730      
714-210 3 Santa Ana CA   730      
714-221 A Orange CA IRVNCASM1MD  730      
714-224 A Anaheim CA IRVNCASM1MD  730      
714-224 0 Anaheim CA   730      
714-224 5 Anaheim CA   730      
714-230 3 Westminster CA   730   2000-10-30   

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

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