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.

Switch: SNFCCA01XGX

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
408-320 A San Jose: West DA CA 516C AT&T CORP. 722      
408-320 1 San Jose: West DA CA 516C AT&T CORP. 722   2010-04-23   
408-320 2 San Jose: West DA CA 516C AT&T CORP. 722   2010-05-25   
408-352 5 San Jose: West DA CA 516C AT&T CORP. 722   2006-07-07   
408-622 8 San Jose: South DA CA 516C AT&T CORP. 722   2010-04-19   
408-628 4 Campbell CA 516C AT&T CORP. 722   2006-07-25   
408-649 3 San Jose: North DA CA 516C AT&T CORP. 722   2006-07-07   
408-685 2 Sunnyvale CA 516C AT&T CORP. 722   2006-07-07   
408-728 7 San Jose: South DA CA 516C AT&T CORP. 722   2005-09-26   
408-740 8 Saratoga CA 516C AT&T CORP. 722   2006-06-30   
408-784 3 San Jose: South DA CA 516C AT&T CORP. 722   2012-02-16   
408-791 6 San Jose: North DA CA 516C AT&T CORP. 722   2011-03-09   
408-837 6 San Martin CA 516C AT&T CORP. 722   2011-05-16   
415-237 5 Inverness CA 516C AT&T CORP. 722   2011-08-09   
415-295 7 San Rafael CA 516C AT&T CORP. 722   2005-04-07   
415-324 7 Sausalito CA 516C AT&T CORP. 722   2006-06-30   
415-326 5 Mill Valley CA 516C AT&T CORP. 722   2006-06-30   
415-347 A San Francisco: Juniper DA CA 516C AT&T CORP. 722      
415-347 7 San Francisco: Juniper DA CA 516C AT&T CORP. 722   2006-05-15   
415-612 4 Ignacio CA 516C AT&T CORP. 722   2008-08-29   
415-650 3 San Francisco: Montrose-Evergreen DA CA 516C AT&T CORP. 722   2015-06-10   
415-658 7 San Francisco: Central DA CA 516C AT&T CORP. 722      
415-702 6 San Francisco: Montrose-Evergreen DA CA 516C AT&T CORP. 722   2006-06-30   
415-757 0 San Francisco: Central DA CA 516C AT&T CORP. 722   2013-09-01   
415-758 7 Corte Madera CA 516C AT&T CORP. 722   2007-02-19   
415-769 A San Francisco: Juniper DA CA 516C AT&T CORP. 722      
415-769 5 San Francisco: Juniper DA CA 516C AT&T CORP. 722   2014-05-04   
415-862 5 Stinson Beach-Bolinas CA 516C AT&T CORP. 722   2011-05-16   
415-872 9 San Francisco: Central DA CA 516C AT&T CORP. 722   2014-07-21   
415-873 6 Point Reyes CA 516C AT&T CORP. 722   2011-05-16   
415-900 5 Belvedere CA 516C AT&T CORP. 722   2011-05-16   
415-909 A San Francisco: Juniper DA CA 516C AT&T CORP. 722      
415-909 7 San Francisco: Juniper DA CA 516C AT&T CORP. 722   2015-10-11   
510-250 9 Oakland: Main-Piedmont DA CA 516C AT&T CORP. 722   2011-09-30   
510-263 8 Oakland: Alameda DA CA 516C AT&T CORP. 722   2006-06-30   
510-270 8 Fremont-Newark: Oliver DA CA 516C AT&T CORP. 722   2006-06-30   
510-274 5 Hayward CA 516C AT&T CORP. 722   2006-07-07   
510-283 5 El Sobrante-Pinole CA 516C AT&T CORP. 722   2007-02-19   
510-320 5 Fremont-Newark: Main DA CA 516C AT&T CORP. 722   2013-10-29   
510-327 4 Hercules-Rodeo CA 516C AT&T CORP. 722   2007-02-19   
510-328 1 Oakland: Fruitvale DA CA 516C AT&T CORP. 722   2013-09-03   
510-374 6 Richmond CA 516C AT&T CORP. 722   2006-06-30   
510-398 8 Hayward CA 516C AT&T CORP. 722   2012-11-08   
510-431 3 Fremont-Newark: Greenleaf DA CA 516C AT&T CORP. 722   2006-06-30   
510-455 9 Crockett CA 516C AT&T CORP. 722   2011-05-16   
510-460 9 Hayward CA 516C AT&T CORP. 722   2010-06-21   
510-479 3 Oakland: Fruitvale DA CA 516C AT&T CORP. 722   2006-06-30   
510-529 4 Oakland: Berkeley DA CA 516C AT&T CORP. 722   2006-06-30   
510-565 1 Fremont-Newark: Main DA CA 516C AT&T CORP. 722   2007-09-14   
510-567 3 Oakland: Trinidad DA CA 516C AT&T CORP. 722   2010-07-06   

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

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