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 heizkalender.heidenblut.eu, not for heidenblut.eu

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
Accept-Ranges
Performance
bytes
Connection
Performance
keep-alive

Caching Headers

3 headers
Cache-Control
Caching
public, no-transform
Expires
Caching
Fri, 25 Dec 2026 13:10:50 GMT
Last-Modified
Caching
Thu, 05 Dec 2024 22:25:27 GMT

Content Headers

2 headers
Content-Length
Content
766
Content-Type
Content
text/html

Server Headers

1 headers
Server
Server
nginx/1.18.0 (Ubuntu)

CORS Headers

0 headers
No CORS headers found

Cookies Headers

0 headers
No cookies headers found

Other Headers

1 headers
Date
Other
Thu, 25 Dec 2025 13:10:50 GMT

Recommendations

Enable compression (gzip/brotli) to improve performance

Analysis completed in 772ms