MyIPScan

Provider-neutral self-test pilot

Mysterium VPN Leak Test

By: · Updated October 2026

Mysterium VPN exits through residential IP addresses supplied by independent node operators, so a passing result often shows a home broadband ISP rather than a hosting company. Its help center says the app does not support IPv6 at present and recommends disabling IPv6 on the device. Each connection is routed through two nodes, and the exit IP can rotate on reconnect unless you switch IP rotation off. Mysterium's own checklist is that your real ISP name and IP should not appear anywhere.

Read methodology

Live test

Run the test on Mysterium VPN now

An empty IPv6 line is the expected reading here, because Mysterium says its app does not support IPv6 and advises disabling IPv6 on the device; an IPv6 address from your own provider means IPv6 is still enabled outside the tunnel. An unfamiliar household ISP on the IP line is normal for a residential exit.

Open the full VPN Leak Test

This browser session

Leak report

Not tested
Verdict
Visible IP
Not tested
DNS
Not tested
WebRTC
Not tested
IPv6
Not tested
Browser
Not tested
Next step

This reports what your browser shows in this session. It does not certify Mysterium VPN, does not test every server, app or device, and does not prove anonymity.

Current-session checks

What this Mysterium VPN self-test checks

Mysterium's DNS leak fixes start with the browser's secure DNS setting, and its WebRTC advice is browser-specific, including an extension for Chrome and Edge. Read the DNS and WebRTC lines as properties of the browser you test in.

Run the VPN Leak Test Review IP, DNS, WebRTC, IPv6 and browser/session signals together. Check DNS signals Review limited resolver-signal behavior for this browser session. Review WebRTC exposure Check browser WebRTC candidate behavior. Check IPv6 visibility Review whether IPv6 appears in visible signals. Review browser fingerprint Check browser characteristics a VPN usually does not change. Read the methodology Review the limits before interpreting results.

Before you read the result

What Mysterium VPN documents about these signals

With IP rotation on, each new connection can bring a different exit address, so compare the ISP and country rather than the exact IP.

Residential exits change the ISP line

Mysterium says its residential IPs come from independent node operators who agreed to take part, and the app offers Residential nodes alongside High-Speed data center ones. On a residential exit the ISP field names a household provider. That is expected; the warning sign is seeing your own ISP name or address.

IPv6 stays outside the tunnel

The help center states that the app does not support IPv6 at present and gives steps to turn IPv6 off on Windows, macOS, iOS and Android. If the IPv6 line shows an address, it came from your own network. Disabling IPv6 on the device is the fix Mysterium itself describes.

Two nodes behind one exit

Mysterium routes traffic through two separate nodes automatically, choosing the extra node close to the residential exit. The test can only see the exit address. Mysterium also says your original IP is not added to the pool that other users connect through.

DNS starts with the browser

Mysterium defines a DNS leak as lookups going to your ISP instead of the tunnel, and its first troubleshooting section covers secure DNS settings in web browsers. The features page says DNS requests are kept inside the VPN tunnel. If the resolver list shows your ISP, check the browser setting before anything else.

WebRTC is fixed per browser

Mysterium's WebRTC article says Chrome and Edge have no built-in WebRTC toggle and points to an extension, while other browsers have their own settings. A WebRTC line showing your real address is therefore something to adjust in the browser you are using.

Between the readings

Record a kill-switch drop on Mysterium VPN

Mysterium describes its kill switch as always on for Windows, macOS, Android and iOS, with no manual toggle, and says it reconnects once the internet returns. It also notes the kill switch does not trigger when you disconnect manually.

Open the drop recorder

Independent audits

No published independent audit found. The about, features, privacy and terms pages and the help centre name no independent audit; the about page cites public app code instead. mysteriumvpn.comChecked 19 Oct 2026 Every published VPN audit by date.

Who runs Mysterium VPN, and on what

Company
UAB MN Intelligence. The terms of service are governed by the law of Panama. mysteriumvpn.comRead 19 Oct 2026
Open-source apps
Mysterium says its app code is public; the mysteriumnetwork GitHub organisation hosts the desktop and mobile clients. Code mysteriumvpn.comRead 19 Oct 2026

Who owns which VPN: every provider’s company and the groups that run several brands.

What this cannot prove

  • This checks visible browser/session signals only.
  • This does not certify the provider.
  • This does not test every server, app, device, or connection.
  • This does not prove anonymity.
  • This does not prove every security condition.
  • A clean result does not prove every leak is absent.

How to compare before and after on Mysterium VPN

  1. With Mysterium disconnected, note the IP, ISP and resolver lines your home line produces.
  2. Pick a Residential node in the app and wait for the status to read Connected.
  3. Rerun the test in the same browser window without clearing anything.
  4. Expect a different household ISP, an empty IPv6 line and no resolver from your own provider.
Safe Copy limits

Safe Copy exports use safe summary categories and remove raw IP, exact city, full user-agent, raw fingerprint data, raw resolver IPs and WebRTC candidates. It is not a certificate, provider audit, or proof of anonymity.

FAQ

Mysterium VPN leak test FAQ

Why does the ISP in my result look like a home internet provider?

Mysterium's residential IPs come from independent node operators, so the exit belongs to an ordinary consumer connection. Only your own ISP name or address would indicate a leak.

Why is my IPv6 line empty while connected?

Mysterium says its app does not support IPv6 at present and recommends disabling IPv6 in device settings. An empty line fits that; an IPv6 address from your provider means IPv6 is still active.

My IP changed between two runs. Is that a leak?

Not by itself. Mysterium can rotate the IP on each new connection, and you can turn rotation off in the app settings, although that still does not give a static address.

Can I switch the Mysterium kill switch off?

According to Mysterium, it is always on for Windows, macOS, Android and iOS and cannot be turned off. It does not trigger when you disconnect yourself.

Google shows a different country than the node I chose. Why?

Mysterium says Google may not yet have updated its location data for a newly added exit node. Its suggestion is to reconnect or pick a different location.

Which protocols does the Mysterium app use?

The help center lists WireGuard and OpenVPN, with OpenVPN unavailable on Android.

Other provider self-tests

The same current-session checks, walked through for another provider. Listed alphabetically; this is not a ranking or a comparison.

All provider self-testsIndex of every provider walkthrough on MyIPScan.Mozilla VPN leak testThe same IP, DNS, WebRTC and IPv6 checks, walked through here.Mullvad leak testThe same IP, DNS, WebRTC and IPv6 checks, walked through here.NetBird leak testThe same IP, DNS, WebRTC and IPv6 checks, walked through here.NordLayer leak testThe same IP, DNS, WebRTC and IPv6 checks, walked through here.