DNS Gurus
Cached · just now
14 Headers

HTTP Security Headers

Status
Strict-Transport-Security
Missing
Not configured
Content-Security-Policy
Missing
Not configured
X-Frame-Options
Good
SAMEORIGIN
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

2 headers
Connection
Performance
close
Transfer-Encoding
Performance
chunked

Caching Headers

2 headers
Cache-Control
Caching
no-cache, must-revalidate
Expires
Caching
Sun, 19 Nov 1978 05:00:00 GMT

Content Headers

2 headers
Content-Language
Content
pl
Content-Type
Content
text/html; charset=utf-8

Server Headers

1 headers
Server
Server
LiteSpeed

CORS Headers

0 headers
No CORS headers found

Cookies Headers

0 headers
No cookies headers found

Other Headers

5 headers
Alt-Svc
Other
h3=":443"; ma=2592000, h3-29=":443"; ma=2592000, h3-Q050=":443"; ma=2592000, h3-Q046=":443"; ma=2592000, h3-Q043=":443"; ma=2592000, quic=":443"; ma=2592000; v="43,46"
Date
Other
Tue, 13 Jan 2026 17:16:25 GMT
Link
Other
<https://esn.pl/pl>; rel="canonical",<https://esn.pl/pl>; rel="shortlink"
X-Generator
Other
ESN Satellite (http://www.esn.org/committees/it)
X-Ua-Compatible
Other
IE=edge

Recommendations

Enable compression (gzip/brotli) to improve performance