DNS Leak Test

Verify if your DNS requests are exposing your true activity—especially when using a proxy or VPN.

Run Test

Click to start a quick DNS leak check. We’ll detect the resolvers that handled your queries.

Note: This demo shows the UI layout. Test runs automatically in production.

Results

Status: — Sources: 0

Waiting to run

Click “Run DNS Leak Test” to start. We’ll compare multiple signals and WebRTC candidates.

IP Hostname/Org Location
203.0.113.12 Unblockium DNS US

Tip: Seeing your ISP here usually indicates a DNS leak.

What is a DNS Leak? (And Why It’s a Major Privacy Risk)

DNS is like the internet’s phonebook. Even if your traffic is proxied, leaking DNS means your ISP can still see which “numbers” you look up—revealing the sites you visit.

How to Interpret Your Test Results

You See Your ISP

This is a leak. Your DNS requests are handled by your ISP resolvers.

You See Public DNS

Likely a leak (Google/OpenDNS etc.). Your app/OS bypassed the proxy for DNS.

You See Your Provider

Good. DNS is routed through your privacy service (or Unblockium).

Resources & Tips

Disable or Limit WebRTC

WebRTC can reveal your real IP via STUN candidates. Consider disabling or restricting it:

  • Chrome/Brave/Edge: Install “WebRTC Network Limiter” or privacy extensions with “Prevent WebRTC IP leak”.
  • Firefox: Settings → Privacy & Security → uncheck “Enable WebRTC to reveal local IPs” or set about:config → media.peerconnection.enabled=false.
  • Safari (macOS/iOS): Disable “WebRTC” in experimental features (may vary by version).

Note: Disabling WebRTC may affect voice/video calls and some real-time apps.

Use Secure DNS (DoH/DoT)

Enable encrypted DNS so your resolver queries aren’t exposed:

  • Chrome/Edge/Brave: Settings → Privacy & Security → Use Secure DNS → Choose a provider (Cloudflare, Google, Quad9).
  • Firefox: Settings → General → Enable “DNS over HTTPS” and pick a provider.
  • Android: Settings → Network & Internet → Private DNS → “private dns provider hostname” (e.g., dns.cloudflare.com).

Tip: If your organization enforces a custom DoH/DoT, confirm policy to avoid mixed routes.

The Unblockium Solution: Leak‑Proof by Design

Many services forward web traffic but ignore DNS privacy. Our premium plans route all DNS via private, encrypted resolvers—eliminating leaks at the source.

Upgrade to a Leak‑Proof Connection Learn About Risks

Need help? Contact our team.