Free online tools to diagnose and understand your internet connection.
Instantly detect your public IP address with geolocation, ISP, ASN, timezone, connection details, and an interactive map.
Check if a port is open on your IP. Security scan, game server testing, and self-hosting verification. Powered by Cloudflare’s secure edge network.
Check if your DNS requests are leaking outside your VPN. Verify that your DNS traffic is going through the tunnel.
Test if WebRTC is revealing your real IP address when connected to a VPN. Detects local and public IP leaks.