DNS Gurus
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13 Headers

Detected Technologies from Headers

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Nginx logo Nginx

HTTP Security Headers

Status
Strict-Transport-Security
Missing
Not configured
Content-Security-Policy
Weak
frame-ancestors Analyze
Content-Security-Policy-Report-Only
Missing
Not configured Analyze
X-Frame-Options
Present
SAMEORIGIN, ALLOW-FROM https://support.collaboraoffice.com https://mautic.collaboraoffice.com https://www.collaboraonline.com
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
strict-origin-when-cross-origin
Permissions-Policy
Missing
Not configured
Recommendations
  • • Add Strict-Transport-Security header with max-age of at least 1 year
  • • Significantly strengthen CSP directives
  • • Consider adding Permissions-Policy to control browser features

Performance Headers

Accept-Ranges
Performance
bytes
Connection
Performance
close

Caching Headers

Etag
Caching
"69c68aae-75179"
Last-Modified
Caching
Fri, 27 Mar 2026 13:48:30 GMT

Content Headers

Content-Length
Content
479609
Content-Type
Content
text/html

Server Headers

Server
Nginx logo
Server
nginx

CORS Headers

No CORS headers found

Cookies Headers

No cookies headers found

Other Headers

Date
Other
Fri, 27 Mar 2026 21:01:46 GMT

Recommendations

Enable compression (gzip/brotli) to improve performance

Add Cache-Control header to optimize caching