Tool World

DNS Leak Test

Check which DNS resolvers you use.

DNS Leak Test uses an EDNS browser probe to show which DNS resolver your connection appears to use, alongside your public IP — helpful when verifying a VPN.

Frequently Asked Questions

Does my data leave the browser?

The test calls public EDNS/IP APIs from your browser. Tool World does not see your DNS queries.

What is a DNS leak?

When a VPN is on but DNS still goes through your ISP resolver, sites or your ISP may learn which domains you look up.