DNS Gurus
Cached · 16m ago
20 Headers

HTTP Security Headers

Status
Strict-Transport-Security
Missing
Not configured
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
  • • Add Strict-Transport-Security header with max-age of at least 1 year
  • • 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
Etag
Caching
W/"67976515-1dd7"
Last-Modified
Caching
Mon, 27 Jan 2025 10:51:01 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

1 headers
Set-Cookie
Cookies
__cf_bm=DseD_FZM6a9Z716ErI764cVkiR5hlp_jdVYWOIRrzKo-1768903597-1.0.1.1-AJ_gGS555lx0R00HCVXSKPf47DZvqkKtWrnsvwCJqM510RJftnUxGqaLzOatUFlFuyEYXoTsHg4FhT1Z.XhUny6CDwka2ysYlydty5OgqW4; path=/; expires=Tue, 20-Jan-26 10:36:37 GMT; domain=.www.classflow.com; HttpOnly; Secure; SameSite=None

Other Headers

11 headers
Alt-Svc
Other
h3=":443"; ma=86400
Cf-Cache-Status
Other
MISS
Cf-Ray
Other
9c0dc29d1f04b135-IAD
Date
Other
Tue, 20 Jan 2026 10:06:37 GMT
Ki-Cache-Type
Other
Edge
Ki-Cf-Cache-Status
Other
MISS
Ki-Edge
Other
v=25.0.1;mv=5.0.18
Ki-Origin
Other
g1p
Nel
Other
{"success_fraction":0.01,"report_to":"cf-nel","max_age":604800}
Report-To
Other
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=%2F24KLogvtBH90W3o4YuVve9JB%2FWzFJ2As5twm%2BD2Z9BsStL8Q8O88CVuusCZjVIKoQOELxW6RzEqzfduyQDcIIoWVTpDirnwmIOtm2wStQtwiXU7Ctj3j3vVkP9Fu2MI5wfq"}],"group":"cf-nel","max_age":604800}
X-Edge-Location-Klb
Other
1

Recommendations

Enable compression (gzip/brotli) to improve performance

Add Cache-Control header to optimize caching