DNS Gurus
Cached · just now
20 Headers

HTTP Security Headers

Status
Strict-Transport-Security
Present
max-age=31536000;
Content-Security-Policy
Good
default-src; img-src; frame-ancestors; +2 more
X-Frame-Options
Missing
Not configured
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
strict-origin-when-cross-origin
Permissions-Policy
Missing
Not configured
Recommendations
  • • Increase HSTS max-age to at least 1 year and add includeSubDomains
  • • Strengthen CSP by removing 'unsafe-eval'
  • • Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
  • • Consider adding Permissions-Policy to control browser features

Performance Headers

3 headers
Accept-Ranges
Performance
bytes
Connection
Performance
close
Vary
Performance
Accept-Encoding

Caching Headers

2 headers
Etag
Caching
"dfj5ke82udum679"
Last-Modified
Caching
Thu, 08 Jan 2026 10:57:49 GMT

Content Headers

2 headers
Content-Length
Content
8037
Content-Type
Content
text/html; charset=utf-8

Server Headers

0 headers
No server headers found

CORS Headers

0 headers
No CORS headers found

Cookies Headers

0 headers
No cookies headers found

Other Headers

8 headers
Alt-Svc
Other
h3=":443"; ma=2592000
Cross-Origin-Embedder-Policy-Report-Only
Other
require-corp; report-to=default
Cross-Origin-Opener-Policy-Report-Only
Other
same-origin; report-to=default
Date
Other
Fri, 09 Jan 2026 00:59:39 GMT
Nel
Other
{"report_to":"default","max_age":2592000,"include_subdomains":true,"failure_fraction":1.0}
Permissions-Policy-Report-Only
Other
microphone=();report-to=default, camera=(self "https://coworking-freiburg.de");report-to=default, fullscreen=*;report-to=default, payment=self;report-to=default
Report-To
Other
{"group":"default","max_age":10886400,"endpoints":[{"url":"https://flsx99.uriports.com/reports"}],"include_subdomains":true}
Reporting-Endpoints
Other
default="https://flsx99.uriports.com/reports"

Recommendations

Enable compression (gzip/brotli) to improve performance

Add Cache-Control header to optimize caching