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: 433E SONIC TELECOM, LLC - CA

1 2 3 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
341-210 6 Oakland: Alameda DA CA SNRTCAHFDS0  722   2024-03-11   
341-215 5 Richmond CA SNRTCAHFDS0  722   2022-05-13   
341-244 3 Oakland: Trinidad DA CA   722   2025-09-03   
341-254 5 Oakland: Berkeley DA CA SNRTCAHFDS0  722   2024-11-01   
341-260 2 Hayward CA SNRTCAHFDS0  722   2025-01-21   
341-299 0 Oakland: Trinidad DA CA SNRTCAHFDS0  722   2021-06-20   
341-333 0 Oakland: Berkeley DA CA SNRTCAHFDS0  722   2019-10-13   
341-333 1 Oakland: Berkeley DA CA SNRTCAHFDS0  722   2019-10-13   
341-333 2 Oakland: Berkeley DA CA SNRTCAHFDS0  722   2019-10-13   
341-344 A Oakland: Trinidad DA CA SNRTCAHFDS0  722      
341-400 5 Oakland: Fruitvale DA CA SNRTCAHFDS0  722   2021-04-25   
341-420 A Oakland: Fruitvale DA CA SNRTCAHFDS0  722      
341-420 0 Oakland: Fruitvale DA CA SNRTCAHFDS0  722   2021-12-19   
341-420 4 Oakland: Fruitvale DA CA SNRTCAHFDS0  722   2022-02-06   
341-441 A Oakland: Main-Piedmont DA CA SNRTCAHFDS0  722      
341-441 0 Oakland: Main-Piedmont DA CA SNRTCAHFDS0  722   2022-03-07   
341-441 4 Oakland: Main-Piedmont DA CA SNRTCAHFDS0  722   2022-03-07   
341-512 A Oakland: Berkeley DA CA SNRTCAHFDS0  722      
341-667 0 Oakland: Fruitvale DA CA SNRTCAHFDS0  722   2021-09-07   
341-688 7 Oakland: Berkeley DA CA SNRTCAHFDS0  722   2023-08-01   
341-699 0 Oakland: Main-Piedmont DA CA SNRTCAHFDS0  722   2022-01-06   
341-766 5 Oakland: Berkeley DA CA SNRTCAHFDS0  722   2020-10-26   
341-946 9 Oakland: Berkeley DA CA SNRTCAHFDS0  722   2021-08-31   
369-208 2 Santa Rosa CA SNRTCAHFDS0  722   2023-10-20   
408-560 5 Los Gatos CA SNRTCAHFDS0  722   2012-12-22   
408-769 7 Sunnyvale CA SNRTCAHFDS0  722   2012-12-22   
408-797 1 San Jose: North DA CA SNRTCAHFDS0  722   2012-12-27   
408-898 5 Saratoga CA SNRTCAHFDS0  722   2012-12-22   
415-419 2 San Rafael CA SNRTCAHFDS0  722   2012-12-22   
415-422 1 San Francisco: Montrose-Evergreen DA CA SNRTCAHFDS0  722   2023-02-21   
415-463 6 San Francisco: Montrose-Evergreen DA CA SNRTCAHFDS0  722   2013-06-01   
415-465 7 Sausalito CA SNRTCAHFDS0  722   2012-12-22   
415-569 5 Mill Valley CA SNRTCAHFDS0  722   2012-12-22   
415-605 0 San Francisco: Central DA CA SNRTCAHFDS0  722   2021-03-07   
415-737 8 Corte Madera CA SNRTCAHFDS0  722   2012-12-22   
415-757 6 San Francisco: Central DA CA SNRTCAHFDS0  722   2013-01-02   
415-763 3 Ignacio CA SNRTCAHFDS0  722   2012-12-22   
415-780 0 San Francisco: Central DA CA SNRTCAHFDS0  722   2014-02-17   
415-780 1 San Francisco: Central DA CA SNRTCAHFDS0  722   2014-02-17   
415-780 3 San Francisco: Central DA CA SNRTCAHFDS0  722   2014-02-17   
415-780 4 San Francisco: Central DA CA SNRTCAHFDS0  722   2014-02-17   
415-780 5 San Francisco: Central DA CA SNRTCAHFDS0  722   2014-02-17   
415-815 2 San Francisco: Central DA CA SNRTCAHFDS0  722   2018-12-11   
415-859 7 San Francisco: Juniper DA CA SNRTCAHFDS0  722   2012-12-27   
510-210 6 Richmond CA SNRTCAHFDS0  722   2013-06-01   
510-269 1 Oakland: Fruitvale DA CA SNRTCAHFDS0  722   2012-12-16   
510-324 7 Fremont-Newark: Greenleaf DA CA SNRTCAHFDS0  722   2012-12-22   
510-380 0 Oakland: Main-Piedmont DA CA SNRTCAHFDS0  722   2020-12-19   
510-398 5 Hayward CA SNRTCAHFDS0  722   2012-12-22   
510-413 6 Fremont-Newark: Oliver DA CA SNRTCAHFDS0  722   2012-12-06   
510-570 8 Oakland: Berkeley DA CA SNRTCAHFDS0  722   2018-07-01   
510-596 5 Oakland: Main-Piedmont DA CA SNRTCAHFDS0  722   2021-10-24   
510-598 1 Fremont-Newark: Main DA CA SNRTCAHFDS0  722   2013-06-01   
510-607 7 Oakland: Main-Piedmont DA CA SNRTCAHFDS0  722   2020-06-26   
510-616 A Oakland: Berkeley DA CA SNRTCAHFDS0  722      
510-616 0 Oakland: Berkeley DA CA SNRTCAHFDS0  722   2018-02-01   
510-616 1 Oakland: Berkeley DA CA SNRTCAHFDS0  722   2018-02-01   
510-616 2 Oakland: Berkeley DA CA SNRTCAHFDS0  722   2018-02-01   
510-616 5 Oakland: Berkeley DA CA SNRTCAHFDS0  722   2018-11-09   
510-725 6 Oakland: Berkeley DA CA SNRTCAHFDS0  722   2018-12-31   
510-740 9 Oakland: Main-Piedmont DA CA SNRTCAHFDS0  722   2016-03-29   
510-768 5 Oakland: Main-Piedmont DA CA SNRTCAHFDS0  722   2020-09-04   
510-775 7 Oakland: Alameda DA CA SNRTCAHFDS0  722   2012-12-22   
510-788 7 Oakland: Main-Piedmont DA CA SNRTCAHFDS0  722   2012-12-16   
510-815 7 El Sobrante-Pinole CA SNRTCAHFDS0  722   2012-12-06   
510-903 6 Oakland: Main-Piedmont DA CA SNRTCAHFDS0  722   2021-04-30   
510-904 5 Oakland: Trinidad DA CA SNRTCAHFDS0  722   2021-09-15   
510-920 A Oakland: Main-Piedmont DA CA SNRTCAHFDS0  722      
510-920 0 Oakland: Main-Piedmont DA CA SNRTCAHFDS0  722   2018-05-07   
510-920 3 Oakland: Main-Piedmont DA CA SNRTCAHFDS0  722   2018-12-31   
510-924 5 Oakland: Trinidad DA CA SNRTCAHFDS0  722   2012-12-16   
510-947 4 Oakland: Main-Piedmont DA CA SNRTCAHFDS0  722   2021-05-31   
510-947 5 Oakland: Main-Piedmont DA CA SNRTCAHFDS0  722   2018-02-18   
510-947 9 Oakland: Main-Piedmont DA CA SNRTCAHFDS0  722   2018-01-05   
510-973 0 Oakland: Berkeley DA CA SNRTCAHFDS0  722   2021-04-27   
510-973 1 Oakland: Berkeley DA CA SNRTCAHFDS0  722   2021-08-31   
510-973 3 Oakland: Berkeley DA CA SNRTCAHFDS0  722   2021-09-04   
510-973 5 Oakland: Berkeley DA CA SNRTCAHFDS0  722   2021-07-11   
510-977 1 Oakland: Berkeley DA CA SNRTCAHFDS0  722   2020-09-04   
510-977 5 Oakland: Berkeley DA CA SNRTCAHFDS0  722   2020-07-23   
510-989 1 Oakland: Berkeley DA CA SNRTCAHFDS0  722   2018-08-11   
510-989 9 Oakland: Berkeley DA CA SNRTCAHFDS0  722   2018-08-02   
510-990 8 Oakland: Berkeley DA CA SNRTCAHFDS0  722   2012-12-22   
628-207 7 San Francisco: Montrose-Evergreen DA CA SNRTCAHFDS0  722   2016-09-30   
628-219 5 San Francisco: Montrose-Evergreen DA CA SNRTCAHFDS0  722   2017-09-21   
628-219 7 San Francisco: Montrose-Evergreen DA CA SNRTCAHFDS0  722   2017-09-21   
628-226 6 Belvedere CA SNRTCAHFDS0  722   2015-12-29   
628-240 7 San Rafael CA SNRTCAHFDS0  722   2018-03-31   
628-250 8 San Francisco: Juniper DA CA SNRTCAHFDS0  722   2018-02-05   
628-250 9 San Francisco: Juniper DA CA SNRTCAHFDS0  722   2019-03-22   
628-256 A San Francisco: Montrose-Evergreen DA CA SNRTCAHFDS0  722      
628-256 0 San Francisco: Montrose-Evergreen DA CA SNRTCAHFDS0  722   2016-12-01   
628-256 1 San Francisco: Montrose-Evergreen DA CA SNRTCAHFDS0  722   2016-12-01   
628-256 2 San Francisco: Montrose-Evergreen DA CA SNRTCAHFDS0  722   2017-02-03   
628-256 3 San Francisco: Montrose-Evergreen DA CA SNRTCAHFDS0  722   2017-02-03   
628-267 0 San Francisco: Central DA CA SNRTCAHFDS0  722   2020-07-23   
628-270 A San Francisco: Montrose-Evergreen DA CA SNRTCAHFDS0  722      
628-270 0 San Francisco: Montrose-Evergreen DA CA SNRTCAHFDS0  722   2019-02-01   
628-280 A San Francisco: Montrose-Evergreen DA CA SNRTCAHFDS0  722      
628-280 1 San Francisco: Montrose-Evergreen DA CA SNRTCAHFDS0  722   2018-08-05   

1 2 3 >>

Last updated: Mon, 15 Sep 2025 02:24:40 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.