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
510-859 A Oakland: Berkeley DA CA SNJSCAYB0MD  722      
510-859 0 Oakland: Berkeley DA CA SNJSCAYB0MD  722      
510-859 1 Oakland: Berkeley DA CA SNJSCAYB0MD  722      
510-859 2 Oakland: Berkeley DA CA SNJSCAYB0MD  722      
510-859 9 Oakland: Berkeley DA CA SNJSCAYB0MD  722      
510-899 6 Oakland: Main-Piedmont DA CA SNJSCAYB0MD  722   2001-07-30   
510-899 7 Oakland: Main-Piedmont DA CA SNJSCAYB0MD  722   2003-02-28   
510-899 8 Oakland: Main-Piedmont DA CA SNJSCAYB0MD  722   2004-03-13   
510-933 A Fremont-Newark: Oliver DA CA SNJSCAYB0MD  722      
510-940 A Hayward CA SNJSCAYB0MD  722      
510-940 0 Hayward CA SNJSCAYB0MD  722      
510-940 1 Hayward CA SNJSCAYB0MD  722      
510-940 2 Hayward CA SNJSCAYB0MD  722      
510-940 4 Hayward CA SNJSCAYB0MD  722      
510-940 7 Hayward CA SNJSCAYB0MD  722      
510-953 7 Fremont-Newark: Main DA CA SNJSCAYB0MD  722   2014-09-30   
510-964 5 El Sobrante-Pinole CA SNJSCAYB0MD  722   2003-09-30   
510-965 6 Richmond CA SNJSCAYB0MD  722   2001-09-03   
510-982 7 Oakland: Berkeley DA CA SNJSCAYB0MD  722   2001-09-03   
510-982 8 Oakland: Berkeley DA CA SNJSCAYB0MD  722   2001-09-03   
510-995 A Oakland: Alameda DA CA SNJSCAYB0MD  722      
510-995 1 Oakland: Alameda DA CA SNJSCAYB0MD  722      
510-995 2 Oakland: Alameda DA CA SNJSCAYB0MD  722      
510-995 3 Oakland: Alameda DA CA SNJSCAYB0MD  722      
510-995 4 Oakland: Alameda DA CA SNJSCAYB0MD  722      
510-995 5 Oakland: Alameda DA CA SNJSCAYB0MD  722      
510-995 9 Oakland: Alameda DA CA SNJSCAYB0MD  722      
512-213 3 Lockhart TX AUSTTXEE7MD  558   2010-12-23   
512-229 A Elgin TX AUSTTXEE7MD  558      
512-229 2 Elgin TX AUSTTXEE7MD  558   2007-07-13   
512-309 3 Taylor TX AUSTTXEE7MD  558   2010-12-23   
512-337 0 Leander TX AUSTTXEE7MD  558   2007-07-13   
512-381 A Austin TX AUSTTXEE7MD  558      
512-515 4 Liberty Hill EACS TX AUSTTXEE7MD  558   2010-12-23   
512-678 A Bastrop TX AUSTTXEE7MD  558      
512-678 2 Bastrop TX AUSTTXEE7MD  558      
512-678 4 Bastrop TX AUSTTXEE7MD  558      
512-678 7 Bastrop TX AUSTTXEE7MD  558      
512-702 A Austin TX AUSTTXEE7MD  558      
512-702 3 Austin TX AUSTTXEE7MD  558   2022-07-24   
512-702 4 Austin TX AUSTTXEE7MD  558   2022-07-24   
512-702 8 Austin TX AUSTTXEE7MD  558   2022-07-24   
512-735 A Austin TX AUSTTXEE7MD  558      
512-798 5 Smithville TX AUSTTXEE7MD  558   2010-12-23   
512-880 A Bastrop TX AUSTTXEE7MD  558      
512-880 5 Bastrop TX AUSTTXEE7MD  558   2022-07-24   
512-880 7 Bastrop TX AUSTTXEE7MD  558   2022-07-24   
512-953 4 Austin TX AUSTTXEE7MD  558   2015-05-04   
512-960 8 Austin TX AUSTTXEE7MD  558   2014-06-20   
513-330 A Hamilton OH CNCNOHBVDMD  922      

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Last updated: Tue, 29 Sep 2026 03:00:13 UTC

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