{"area_code":"539","type":"geographic","status":"active","country":"US","region":"Oklahoma","region_code":"OK","principal_city":"Tulsa","cities":["Tulsa","Broken Arrow","Muskogee","Bartlesville"],"timezone":"America/Chicago","timezone_label":"Central Time","current_local_time":"2026-08-04 15:53:48","ten_digit_dialing":true,"service_type":null,"overlay_codes":["918"],"nearby_codes":["918","405","572","479","417","316"],"summary":"Area code 539 covers Tulsa and nearby cities including Broken Arrow, Muskogee, Bartlesville in Oklahoma, in the Central Time.","carrier_summary":{"nxx_prefixes":238,"blocks":1871,"wireless_pct":41,"top_carriers":[{"name":"ONVOY, LLC - OK","blocks":468},{"name":"UNITED STATES CELLULAR - OK","blocks":219},{"name":"NEW CINGULAR WIRELESS PCS, LLC - IL","blocks":199},{"name":"T-MOBILE USA, INC.","blocks":187},{"name":"BANDWIDTH.COM CLEC, LLC - OK","blocks":134},{"name":"ONVOY SPECTRUM, LLC","blocks":102}],"per_number":"https://areacode.fyi/api/v1/carrier/{number}"},"canonical_url":"https://areacode.fyi/539","source":"North American Numbering Plan Administrator via areacode.fyi","data_date":"2026-08-02"}