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: 7145 TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
510-404 2 Fremont-Newark: Greenleaf DA CA   722   2014-02-14   
510-449 A Fremont-Newark: Main DA CA OKLDCAUNDS0  722      
510-449 0 Fremont-Newark: Main DA CA   722      
510-457 A Oakland: Main-Piedmont DA CA OKLDCAUNDS0  722      
510-457 2 Oakland: Main-Piedmont DA CA   722      
510-457 3 Oakland: Main-Piedmont DA CA   722      
510-457 4 Oakland: Main-Piedmont DA CA   722      
510-457 9 Oakland: Main-Piedmont DA CA   722      
510-479 A Oakland: Fruitvale DA CA SNFCCAFJDS0  722      
510-491 A Fremont-Newark: Greenleaf DA CA SNFCCAFJDS0  722      
510-491 1 Fremont-Newark: Greenleaf DA CA   722      
510-491 2 Fremont-Newark: Greenleaf DA CA   722      
510-602 3 Fremont-Newark: Main DA CA   722   2019-09-13   
510-602 4 Fremont-Newark: Main DA CA   722   2019-09-13   
510-602 6 Fremont-Newark: Main DA CA   722   2019-09-13   
510-623 4 Fremont-Newark: Oliver DA CA   722   2015-07-01   
510-626 2 Oakland: Trinidad DA CA   722   2016-09-30   
510-627 9 Oakland: Main-Piedmont DA CA   722   2018-11-17   
510-817 6 Oakland: Main-Piedmont DA CA   722   2016-11-21   
510-837 A Richmond CA OKLDCA03DS5  722      
510-837 3 Richmond CA   722      
510-854 5 El Sobrante-Pinole CA   722   2008-02-29   
510-879 A Oakland: Main-Piedmont DA CA SNFCCAFJDS0  722      
510-879 0 Oakland: Main-Piedmont DA CA   722      
510-879 1 Oakland: Main-Piedmont DA CA   722      
510-879 2 Oakland: Main-Piedmont DA CA   722      
510-879 3 Oakland: Main-Piedmont DA CA   722      
510-879 4 Oakland: Main-Piedmont DA CA   722      
510-879 8 Oakland: Main-Piedmont DA CA   722      
510-879 9 Oakland: Main-Piedmont DA CA   722      
510-890 2 Richmond CA   722   2019-09-13   
510-896 A Fremont-Newark: Main DA CA SNFCCAFJDS0  722      
510-896 1 Fremont-Newark: Main DA CA   722      
510-896 2 Fremont-Newark: Main DA CA   722      
510-896 4 Fremont-Newark: Main DA CA   722      
510-896 6 Fremont-Newark: Main DA CA   722      
510-897 A Fremont-Newark: Oliver DA CA SNFCCAFJDS0  722      
510-897 0 Fremont-Newark: Oliver DA CA   722   2015-03-30   
510-897 1 Fremont-Newark: Oliver DA CA   722      
510-897 2 Fremont-Newark: Oliver DA CA   722      
510-897 3 Fremont-Newark: Oliver DA CA   722   2014-06-06   
510-897 4 Fremont-Newark: Oliver DA CA   722      
510-897 8 Fremont-Newark: Oliver DA CA   722      
510-898 A Oakland: Berkeley DA CA SNFCCAFJDS0  722      
510-898 0 Oakland: Berkeley DA CA   722      
510-898 2 Oakland: Berkeley DA CA   722      
510-898 3 Oakland: Berkeley DA CA   722      
510-898 4 Oakland: Berkeley DA CA   722      
510-898 5 Oakland: Berkeley DA CA   722      
510-898 7 Oakland: Berkeley DA CA   722      

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 >>

Last updated: Sat, 14 Sep 2019 01:44:23 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.