Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
510-403 3 Fremont-Newark: Oliver DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
510-403 7 Fremont-Newark: Oliver DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2007-12-27   
510-413 2 Fremont-Newark: Oliver DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2010-04-04   
510-431 5 Fremont-Newark: Greenleaf DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2001-09-03   
510-433 8 Oakland: Main-Piedmont DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2011-08-28   
510-439 3 Richmond CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2003-02-28   
510-439 4 Richmond CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2001-07-30   
510-441 4 Fremont-Newark: Greenleaf DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2007-03-15   
510-456 A Fremont-Newark: Main DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
510-456 1 Fremont-Newark: Main DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
510-456 2 Fremont-Newark: Main DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
510-456 3 Fremont-Newark: Main DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
510-456 4 Fremont-Newark: Main DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
510-456 7 Fremont-Newark: Main DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
510-456 9 Fremont-Newark: Main DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
510-463 A Oakland: Main-Piedmont DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
510-463 2 Oakland: Main-Piedmont DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
510-463 5 Oakland: Main-Piedmont DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
510-463 6 Oakland: Main-Piedmont DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
510-485 5 Oakland: Fruitvale DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2003-02-28   
510-485 7 Oakland: Fruitvale DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2001-07-30   
510-496 A Oakland: Main-Piedmont DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
510-496 2 Oakland: Main-Piedmont DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
510-496 5 Oakland: Main-Piedmont DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
510-496 7 Oakland: Main-Piedmont DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
510-496 8 Oakland: Main-Piedmont DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
510-542 2 Oakland: Berkeley DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2009-11-23   
510-544 4 Oakland: Trinidad DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
510-544 5 Oakland: Trinidad DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
510-550 8 Oakland: Main-Piedmont DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2006-09-29   
510-585 A Fremont-Newark: Main DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
510-585 2 Fremont-Newark: Main DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
510-588 2 Oakland: Main-Piedmont DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
510-588 8 Oakland: Main-Piedmont DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2011-12-17   
510-601 2 Oakland: Main-Piedmont DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2015-03-21   
510-607 A Oakland: Main-Piedmont DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
510-607 3 Oakland: Main-Piedmont DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2018-05-12   
510-607 4 Oakland: Main-Piedmont DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2018-05-12   
510-662 3 El Sobrante-Pinole CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2001-07-30   
510-662 5 El Sobrante-Pinole CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2003-02-28   
510-674 2 Hayward CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2015-11-19   
510-675 8 Fremont-Newark: Greenleaf DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2007-03-15   
510-686 2 Oakland: Trinidad DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2001-09-03   
510-698 A Oakland: Fruitvale DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
510-698 0 Oakland: Fruitvale DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
510-698 3 Oakland: Fruitvale DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2007-12-27   
510-698 7 Oakland: Fruitvale DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
510-707 5 Oakland: Trinidad DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2016-05-31   
510-726 3 Crockett CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2017-03-10   
510-735 3 Oakland: Main-Piedmont DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2015-03-21   

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Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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