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
628-280 4 San Francisco: Montrose-Evergreen DA CA 433E SONIC TELECOM, LLC - CA 722   2020-06-11   
628-283 0 San Francisco: Montrose-Evergreen DA CA 433E SONIC TELECOM, LLC - CA 722   2022-04-13   
628-294 2 Novato CA 433E SONIC TELECOM, LLC - CA 722   2024-01-31   
628-363 8 San Francisco: Juniper DA CA 433E SONIC TELECOM, LLC - CA 722   2020-06-26   
628-432 0 San Francisco: Montrose-Evergreen DA CA 433E SONIC TELECOM, LLC - CA 722   2020-11-16   
628-588 0 San Francisco: Central DA CA 433E SONIC TELECOM, LLC - CA 722   2021-10-11   
628-628 3 San Francisco: Central DA CA 433E SONIC TELECOM, LLC - CA 722   2019-08-18   
628-688 0 San Francisco: Central DA CA 433E SONIC TELECOM, LLC - CA 722   2020-12-19   
628-732 2 San Francisco: Juniper DA CA 433E SONIC TELECOM, LLC - CA 722   2021-02-01   
628-867 3 San Francisco: Central DA CA 433E SONIC TELECOM, LLC - CA 722   2017-07-01   
628-867 4 San Francisco: Central DA CA 433E SONIC TELECOM, LLC - CA 722   2017-07-01   
628-867 6 San Francisco: Central DA CA 433E SONIC TELECOM, LLC - CA 722   2017-07-01   
628-899 6 San Francisco: Montrose-Evergreen DA CA 433E SONIC TELECOM, LLC - CA 722   2016-04-22   
628-899 8 San Francisco: Montrose-Evergreen DA CA 433E SONIC TELECOM, LLC - CA 722   2016-04-22   
628-977 4 San Francisco: Montrose-Evergreen DA CA 433E SONIC TELECOM, LLC - CA 722   2020-09-11   
650-300 6 Palo Alto CA 433E SONIC TELECOM, LLC - CA 722   2012-12-22   
650-394 0 San Carlos-Belmont CA 433E SONIC TELECOM, LLC - CA 722   2021-04-02   
650-514 9 San Mateo CA 433E SONIC TELECOM, LLC - CA 722   2020-10-26   
650-530 5 Woodside CA 433E SONIC TELECOM, LLC - CA 722   2012-12-22   
650-535 5 Moss Beach CA 433E SONIC TELECOM, LLC - CA 722   2015-12-12   
650-564 5 Mountain View CA 433E SONIC TELECOM, LLC - CA 722   2012-12-22   
650-581 0 San Mateo CA 433E SONIC TELECOM, LLC - CA 722   2012-12-22   
650-597 5 San Carlos-Belmont CA 433E SONIC TELECOM, LLC - CA 722   2012-12-22   
650-608 6 San Francisco: Juniper DA CA 433E SONIC TELECOM, LLC - CA 722   2022-09-08   
650-674 6 San Carlos-Belmont CA 433E SONIC TELECOM, LLC - CA 722   2024-03-14   
650-679 6 Redwood City CA 433E SONIC TELECOM, LLC - CA 722   2012-12-22   
650-684 6 Millbrae CA 433E SONIC TELECOM, LLC - CA 722   2012-12-22   
650-699 0 San Mateo CA 433E SONIC TELECOM, LLC - CA 722   2021-05-31   
650-706 0 San Mateo CA 433E SONIC TELECOM, LLC - CA 722   2023-07-19   
650-760 5 South San Francisco CA 433E SONIC TELECOM, LLC - CA 722   2024-03-08   
650-869 9 South San Francisco CA 433E SONIC TELECOM, LLC - CA 722   2012-12-22   
650-887 8 Los Altos CA 433E SONIC TELECOM, LLC - CA 722   2012-12-22   
650-889 3 Half Moon Bay CA 433E SONIC TELECOM, LLC - CA 722   2012-12-06   
669-200 7 San Jose: South DA CA 433E SONIC TELECOM, LLC - CA 722   2013-01-18   
669-222 5 Campbell CA 433E SONIC TELECOM, LLC - CA 722   2012-12-22   
669-223 7 San Jose: West DA CA 433E SONIC TELECOM, LLC - CA 722   2012-12-30   
669-888 2 Morgan Hill CA 433E SONIC TELECOM, LLC - CA 722   2012-12-22   
707-244 2 St Helena CA 433E SONIC TELECOM, LLC - CA 722   2012-12-22   
707-284 7 Santa Rosa CA 433E SONIC TELECOM, LLC - CA 722   2019-06-08   
707-346 3 Napa CA 433E SONIC TELECOM, LLC - CA 722   2012-12-22   
707-397 1 Mendocino CA 433E SONIC TELECOM, LLC - CA 722   2007-06-14   
707-397 4 Mendocino CA 433E SONIC TELECOM, LLC - CA 722   2012-12-22   
707-439 2 Fairfield-Suisun CA 433E SONIC TELECOM, LLC - CA 722   2012-12-22   
707-531 5 Yountville CA 433E SONIC TELECOM, LLC - CA 722   2012-12-22   
707-562 5 Vallejo CA 433E SONIC TELECOM, LLC - CA 722   2012-12-22   
707-665 6 Petaluma: Swift DA CA 433E SONIC TELECOM, LLC - CA 722   2012-12-22   
707-669 2 Cloverdale CA 433E SONIC TELECOM, LLC - CA 722   2007-04-09   
707-671 9 Ukiah CA 433E SONIC TELECOM, LLC - CA 722   2013-06-01   
707-687 0 Windsor CA 433E SONIC TELECOM, LLC - CA 722   2012-12-16   
707-699 3 Napa CA 433E SONIC TELECOM, LLC - CA 722   2018-11-24   

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

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