Enter any domain to get an instant security assessment. We check DNS, SSL, headers, open ports, and more — in about 30 seconds.
No signup required. 3 free scans per hour.
SPF, DMARC, DKIM records. DNSSEC validation. CAA and MX configuration.
Certificate validity and trust chain. TLS version. HSTS configuration.
Content-Security-Policy, X-Frame-Options, and 5 other security headers.
Top 20 TCP ports. Identifies dangerous services exposed to the internet.
HTTPS redirect, CMS detection, cookie security, security.txt, robots.txt.
Weighted A-F grade across all categories with actionable recommendations.