What it is
DNS is the system that translates domain names into IP addresses. A DNS leak means those lookups are handled by a resolver outside the network path or region you expect, so the DNS signal does not line up with the visible public IP.
Device Trust Check
What is a DNS leak?
A DNS leak happens when domain lookups use a DNS resolver that does not match the network path you expect.
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Why it matters
DNS requests can reveal which resolver or network is handling your browsing. If your IP appears in one country but DNS uses a different provider or region, websites may see the setup as inconsistent.
How to detect it
Compare the country, provider and resolver shown by a DNS leak test with your public IP result. A mismatch is not always dangerous, but it is a signal to review if the DNS provider, browser secure DNS setting or router is using a different path.
How to correct it
Use DNS servers that match your intended network region, disable conflicting secure DNS settings in the browser, check router DNS settings and confirm whether your VPN or network app provides DNS leak protection.
Educational resources
Learn the core signals behind network and browser consistency checks.