DNS Gurus
Cached · just now
22 Headers

HTTP Security Headers

Status
Strict-Transport-Security
Present
max-age=31536000
Content-Security-Policy
Weak
frame-ancestors
X-Frame-Options
Good
SAMEORIGIN
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
  • • Significantly strengthen CSP directives
  • • 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
Age
Caching
229027
Last-Modified
Caching
Fri, 30 Jan 2026 22:54:25 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
_cfuvid=wljDGaatk2YmbUq6gsEKLqt4Wa55GajeA4c14uB4Qt0-1770042692444-0.0.1.1-604800000; path=/; domain=.www.classlink.com; HttpOnly; Secure; SameSite=None

Other Headers

8 headers
Alt-Svc
Other
h3=":443"; ma=86400
Cf-Cache-Status
Other
HIT
Cf-Ray
Other
9c7a648b698fc9ad-IAD
Date
Other
Mon, 02 Feb 2026 14:31:32 GMT
Feature-Policy
Other
microphone 'self'; camera 'self'; speakers 'self'
Surrogate-Control
Other
max-age=432000
Surrogate-Key
Other
www.classlink.com 5d6db64572061db9c481aaeb pageId:63fcd967a9c48f484ae3c94a 63fcd967a9c48f5844e3c92e 63fcd967a9c48ff798e3c928 63fcd967a9c48f5393e3c931 63fcd967a9c48f48a2e3c925
X-Lambda-Id
Other
ab52cc4a-0236-46b5-be74-33233dca48f8

Recommendations

Enable compression (gzip/brotli) to improve performance

Add Cache-Control header to optimize caching