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Free tool

Free security checkup

See how your domain’s email, HTTPS, headers and DNS stack up. Passive checks only: we read public records and headers, nothing intrusive.

PreviewResults on this page are example data. No checks are run until POST /api/v1/checkup is live.

Just the domain, like example.com. Only check domains you own or manage.

Human check placeholder: Cloudflare Turnstile will appear here. Not active in this preview.

What we check

Email

  • MX records
  • SPF
  • DMARC
  • DKIM (common selectors)
  • MTA-STS and TLS-RPT

HTTPS & TLS

  • HTTP → HTTPS redirect
  • TLS version
  • Certificate expiry
  • HSTS

Security headers

  • Content-Security-Policy
  • X-Content-Type-Options
  • Referrer-Policy
  • Permissions-Policy
  • Clickjacking (frame-ancestors / XFO)
  • Cross-Origin-Opener-Policy

DNS

  • DNSSEC
  • CAA
  • security.txt

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