Free IP Checker Tools: VPN, Proxy, Tor and Fraud Score

Check any IP address for VPN, proxy, Tor and fraud risk. Every tool is free to try in the browser and runs on the same real-time API you can call from your own app.

VPN Detection APIVPN detection API: send any IP and learn whether it belongs to a commercial VPN, with a confidence score. Real-time REST lookups and a free tier.
Proxy Detection APIProxy detection API: catch HTTP, SOCKS, residential and datacenter proxies and Tor exit nodes from any IP in one REST call. Free tier included.
Residential Proxy DetectionResidential proxy detection by IP: spot proxies that pass traffic off as ordinary home connections, in real time, with confidence scores. Free tier.
Datacenter Proxy DetectionDatacenter proxy detection by IP: flag cloud-hosted proxies and the hosting ASNs behind scraping in real time, with confidence scores and a free API.
How to Detect a VPNHow to detect a VPN from an IP address: try the free VPN checker, learn which signals give a VPN away, and automate it with the VPN detection API.
Detect a Proxy from an IPDetect a proxy from an IP: a free online proxy detector for HTTP, SOCKS, residential and datacenter proxies plus Tor, with an API to automate it.
Anonymous Proxy CheckerFree anonymous proxy checker: find out if an IP is an anonymous or elite proxy hiding a user’s real address, with proxy type, confidence and an API.
Tor Exit Node DetectionTor exit node detection by IP in real time: check whether an address is on the Tor network using a live exit list, with confidence scores and an API.
IP Reputation CheckFree IP reputation check: see whether an IP is tied to VPNs, proxies, Tor, hosting or past abuse, with a combined risk score and an API.
IP Fraud ScoreIP fraud score for any address: VPN, proxy, Tor, hosting and abuse signals combined into one 0 to 100 risk score. Free to try, with an API.
Bulk IP LookupBulk IP lookup: paste a list of IPs and get country, ASN, VPN, proxy, Tor and hosting class plus a risk grade for each. CSV export on paid plans.

Get a key and make your first call in a minute

New accounts get 7 days of Starter from their first request. No card, and your key is on screen as soon as you sign up.

Create free account See pricing