DNS Gurus

SSL Verification Bypassed

The server's SSL certificate could not be verified. The analysis was completed using insecure mode. Data may be less reliable.

Reason:

Hostname Mismatch - certificate is issued for semestrando.it, not for www.semestrando.it

Cached · just now
9 Headers

HTTP Security Headers

Status
Strict-Transport-Security
Missing
Not configured
Content-Security-Policy
Missing
Not configured
X-Frame-Options
Missing
Not configured
X-Content-Type-Options
Missing
Not configured
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
  • • Add Strict-Transport-Security header with max-age of at least 1 year
  • • Add Content-Security-Policy header to prevent XSS attacks
  • • Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
  • • Add X-Content-Type-Options: nosniff
  • • Add Referrer-Policy header (recommended: strict-origin-when-cross-origin)
  • • Consider adding Permissions-Policy to control browser features

Performance Headers

2 headers
Connection
Performance
close
Transfer-Encoding
Performance
chunked

Caching Headers

1 headers
Cache-Control
Caching
private, no-store, max-age=0

Content Headers

1 headers
Content-Type
Content
text/html; charset=utf-8

Server Headers

1 headers
Server
Server
Vercel

CORS Headers

0 headers
No CORS headers found

Cookies Headers

0 headers
No cookies headers found

Other Headers

4 headers
Date
Other
Tue, 23 Dec 2025 07:42:42 GMT
X-Vercel-Challenge-Token
Other
2.1766475762.60.NDViNjNlM2ZlMTAyNzQ1ZTUxZTMzZTM0ZWQ0YjE5MzU7NzRiMWI1YWY7Yjc2MDEwZjY5Yjc2ZGEyNTFiYTYxZDgyYzhjNjgxM2JmY2E4YjcxMjszOyIcd1qg51DP9iz1k7QhycRycYw9mMO4LKxaMfQTUcLFdHIhiSPbXlR8soPzXtM=.115aa720412901f9f85c3376418ec009
X-Vercel-Id
Other
iad1::1766475762-jBXgwQyN745Fr4Ub6yXZkbBiv8MIIXye
X-Vercel-Mitigated
Other
challenge

Recommendations

Enable compression (gzip/brotli) to improve performance

Analysis completed in 920ms