Is it safe? Check in plain language.
Domain, email, Microsoft 365, links and phishing. A clear grade instead of a technical report.
Free. No account. We do not store which domain you check. Try an example.
A full check with a grade
Full domain check
Email, DNS and web in one grade: SPF, DKIM, DMARC, MX, blacklists, name servers, DNSSEC, certificate and security headers.
LiveMicrosoft 365 check
An outside view of whether the domain runs Microsoft 365 and how its email holds up.
LiveNIS2 scope check
Are you in scope of NIS2, directly or via your customers? Three questions, one answer.
LiveLink check
Is a link in an email or text dangerous? We read it without opening it.
LiveQR check
Where does the QR code lead? We decode the image without really scanning it.
LiveMicrosoft 365 news
Actively exploited vulnerabilities, confirmed flaws, upcoming features and Microsoft's own security reports. Updated hourly.
LiveKOLLEN Security Index
Aggregated, de-identified statistics built from real checks: how many are missing DMARC, DKIM and more.
Email and delivery
DNS and domain
Web, cert and owner
Learn more