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A result that looks wrong, a check you'd like to see, or a page that explains something badly? Send a message. No name or e-mail needed.

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Helpful details for a wrong result

  • Which tool, and the result you expected (and where that answer comes from, if you know).
  • Paste the link from Copy link: it contains what you checked, so the check can be repeated.
  • For DNS changes: when you made the change, and the old and new values.

Results come from public DNS, registry and certificate data and from checks run from Cloudflare's network at the moment you ask. They can differ from what another network sees. How our tools work · Terms of use.