DNS Gurus
Cached · just now
20 Headers

HTTP Security Headers

Status
Strict-Transport-Security
Present
max-age=31536000
Content-Security-Policy
Missing
Not configured
X-Frame-Options
Missing
Not configured
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
  • • Increase HSTS max-age to at least 1 year and add includeSubDomains
  • • Add Content-Security-Policy header to prevent XSS attacks
  • • Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
  • • Add Referrer-Policy header (recommended: strict-origin-when-cross-origin)
  • • Consider adding Permissions-Policy to control browser features

Performance Headers

3 headers
Connection
Performance
close
Transfer-Encoding
Performance
chunked
Vary
Performance
Accept-Encoding

Caching Headers

2 headers
Cache-Control
Caching
no-cache, no-store, must-revalidate, private
Expires
Caching
Mon, 01 Jan 1990 00:00:00 GMT

Content Headers

1 headers
Content-Type
Content
text/html; charset="utf-8"

Server Headers

1 headers
Server
Server
cloudflare

CORS Headers

0 headers
No CORS headers found

Cookies Headers

0 headers
No cookies headers found

Other Headers

10 headers
Alt-Svc
Other
h3=":443"; ma=86400
Cf-Cache-Status
Other
DYNAMIC
Cf-Ray
Other
9b52635bafd6e60f-IAD
Date
Other
Sun, 28 Dec 2025 16:20:59 GMT
Host
Other
cpcalendars.kjongsys.com:443
Nel
Other
{"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
Persistent-Auth
Other
false
Report-To
Other
{"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=fJvww4l1Dq64yunq4dAViP%2BmYG3l7R55Kt8ctdjFyq2QtBBXeweVZgw1vve8%2BGJFUIps06hS3xeR1o%2FjVKn7prbPVKTbExuzlMEhkB4Ka6KF9PsYAaxJTQ%3D%3D"}]}
Server-Timing
Other
cfEdge;dur=9,cfOrigin;dur=255
Www-Authenticate
Other
Basic realm="DAV Server"

Recommendations

Enable compression (gzip/brotli) to improve performance

Analysis completed in 309ms