About ClickGuardian IP Checker
ClickGuardian IP Checker is a free tool that tells advertisers whether an IP address is a likely source of bad traffic. Enter any IPv4 or IPv6 address and get an instant 0 to 100 risk score built from VPN, proxy, Tor and datacentre classification, geolocation, ASN and network reputation, plus ClickGuardian's own first-party click fraud signals from live Google Ads and Microsoft Ads campaigns. That last part is the difference: unlike generic threat feeds, ClickGuardian has ground-truth data on IPs that have actually been clicking ads fraudulently. Free, no signup, with a public API endpoint. Built for PPC advertisers and agencies.
