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 ssl0.ovh.net, www.ssl0.ovh.net, not for mail.szklarczyk.art

Open Cached · 4h ago
19 Headers

HTTP Security Headers

Status
Strict-Transport-Security
Missing
Not configured
Content-Security-Policy
Missing
Not configured
X-Frame-Options
Present
ORIGIN
X-Content-Type-Options
Good
nosniff
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 Referrer-Policy header (recommended: strict-origin-when-cross-origin)
  • • Consider adding Permissions-Policy to control browser features

Performance Headers

4 headers
Accept-Ranges
Performance
bytes
Connection
Performance
close
Transfer-Encoding
Performance
chunked
Vary
Performance
Accept-Encoding

Caching Headers

1 headers
Cache-Control
Caching
public, must-revalidate, max-age=90

Content Headers

1 headers
Content-Type
Content
text/html

Server Headers

0 headers
No server headers found

CORS Headers

1 headers
Access-Control-Allow-Origin
Cors
*

Cookies Headers

0 headers
No cookies headers found

Other Headers

9 headers
Date
Other
Sat, 29 Nov 2025 03:07:23 GMT
X-Cacheable
Other
Cacheable: miss
X-Cdn-Pop
Other
vin
X-Cdn-Pop-Ip
Other
51.81.91.128/27
X-Iplb-Instance
Other
55966
X-Iplb-Request-Id
Other
33515B80:C1B4_C063418B:01BB_692A636B_131BCB:4D35
X-Request-Id
Other
53189170
X-Toujours-Debout-Branch
Other
B
X-Toujours-Debout-Location
Other
BHS

Recommendations

Enable compression (gzip/brotli) to improve performance

Analysis completed in 874ms