FFraud is a free IP and email intelligence API. Check any IP address for a fraud score, abuse history and VPN, proxy, Tor or data center use, or check an email address for throwaway and invalid domains. Auth: none for the public lookups (a free API key for the /v1 endpoints). Rate limits: no daily or monthly caps, a fair-use burst limit. HTTPS and CORS. Example: curl https://api.ffraud.com/public/ip/8.8.8.8
Last verified: November 12, 2026
100% uptime: the documentation responded in 3 of 3 checks over the last 30 days. Median response time: 297 ms.