This report summarizes how well ml-house-price.duckdns.org is configured for secure web delivery. It covers HTTPS availability, HTTP→HTTPS redirects, TLS/SSL certificate validity, security headers, HTTP/2 and HTTP/3 support, and mixed content. Use it to quickly spot configuration gaps and improve your site's security and trust.
Disabled
Yes
F · 1.2, 1.3
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SSL certificate has expired. Browsers will reject this connection.
The site could not be reached over HTTPS or returned an error.
Why it matters: HTTPS encrypts traffic and protects user data.
Requests to HTTP are redirected to HTTPS.
| Valid | No |
| Issuer | C=AT, O=ZeroSSL, CN=ZeroSSL ECC Domain Secure Site CA |
| Expires | 2026-03-25 |
| Days until expiry | -23 days |
Why it matters: A valid, non-expired certificate ensures encryption is trusted by browsers.
To improve your grade
Requires 4 of 6 headers and Content-Security-Policy (CSP).
To improve your grade
No CAA records. Any CA can issue certificates. Consider adding CAA to restrict issuance.
When you visit the site over HTTP, the server may send you through one or more redirects until you land on the final HTTPS URL. Shorter chains are faster and better for SEO.
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