{"area_code":"820","type":"geographic","status":"active","country":"US","region":"California","region_code":"CA","principal_city":"Camarillo","cities":["Camarillo","Oxnard","Thousand Oaks","Simi Valley","Santa Maria","Santa Barbara","San Luis Obispo","Lompoc","Atascadero","Goleta","Moorpark","Orcutt","Paso Robles","Port Hueneme","Santa Paula","Ventura"],"timezone":"America/Los_Angeles","timezone_label":"Pacific Time","current_local_time":"2026-08-04 16:51:21","ten_digit_dialing":true,"service_type":null,"overlay_codes":["805"],"nearby_codes":["805","661","747","818","310","424"],"summary":"Area code 820 covers Camarillo and nearby cities including Oxnard, Thousand Oaks, Simi Valley in California, in the Pacific Time.","carrier_summary":{"nxx_prefixes":90,"blocks":846,"wireless_pct":52,"top_carriers":[{"name":"NEW CINGULAR WIRELESS PCS, LLC","blocks":200},{"name":"ONVOY, LLC - CA","blocks":196},{"name":"T-MOBILE USA, INC.","blocks":112},{"name":"FRACTEL, LLC","blocks":76},{"name":"CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA","blocks":61},{"name":"ONVOY SPECTRUM, LLC","blocks":53}],"per_number":"https://areacode.fyi/api/v1/carrier/{number}"},"canonical_url":"https://areacode.fyi/820","source":"North American Numbering Plan Administrator via areacode.fyi","data_date":"2026-08-02"}