{"area_code":"628","type":"geographic","status":"active","country":"US","region":"California","region_code":"CA","principal_city":"San Francisco","cities":["San Francisco","South San Francisco","San Rafael","Novato","San Anselmo"],"timezone":"America/Los_Angeles","timezone_label":"Pacific Time","current_local_time":"2026-08-04 15:32:58","ten_digit_dialing":true,"service_type":null,"overlay_codes":["415"],"nearby_codes":["415","650","925","369","707","341"],"summary":"Area code 628 covers San Francisco and nearby cities including South San Francisco, San Rafael, Novato in California, in the Pacific Time.","carrier_summary":{"nxx_prefixes":192,"blocks":2029,"wireless_pct":37,"top_carriers":[{"name":"ONVOY, LLC - CA","blocks":477},{"name":"T-MOBILE USA, INC.","blocks":315},{"name":"CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA","blocks":203},{"name":"TELEPORT COMMUNICATIONS AMERICA, LLC - CA","blocks":171},{"name":"BANDWIDTH.COM CLEC, LLC - CA","blocks":150},{"name":"NEW CINGULAR WIRELESS PCS, LLC","blocks":128}],"per_number":"https://areacode.fyi/api/v1/carrier/{number}"},"canonical_url":"https://areacode.fyi/628","source":"North American Numbering Plan Administrator via areacode.fyi","data_date":"2026-08-02"}