{"area_code":"539","is_legitimate_code":true,"explanation":"Area code 539 is a legitimate Oklahoma area code. The code itself is not a scam, but scammers can spoof any number — including 539 — so individual calls can still be fraudulent.","spoofing_note":"An area code only shows where a number is registered, not who is calling. Caller ID can be spoofed, so the code alone is not proof a call is local, safe, or fraudulent.","ftc_complaints":{"numbers_with_complaints":9,"total_complaints":33,"top_subjects":["Other","No Subject Provided","Calls pretending to be government, businesses, or family and friends"],"most_complained":[{"number":"(539) 444-7353","complaints":7,"url":"https://areacode.fyi/number/5394447353"},{"number":"(539) 424-4170","complaints":5,"url":"https://areacode.fyi/number/5394244170"},{"number":"(539) 399-0523","complaints":3,"url":"https://areacode.fyi/number/5393990523"},{"number":"(539) 224-0199","complaints":3,"url":"https://areacode.fyi/number/5392240199"},{"number":"(539) 549-9556","complaints":3,"url":"https://areacode.fyi/number/5395499556"}],"note":"These are FTC Do Not Call complaints filed about specific numbers shown with this area code — frequently spoofed. The area code itself is not a scam.","source":"FTC Do Not Call Reported Calls"},"advice":"Judge the call by what it asks for (urgency, gift cards/crypto, confirming codes or SSN), not by the area code. When unsure, hang up and call back on an official number.","canonical_url":"https://areacode.fyi/539/scam","source":"North American Numbering Plan Administrator via areacode.fyi","data_date":"2026-08-02"}