DNS Gurus
Cached · just now
22 Headers

HTTP Security Headers

Status
Strict-Transport-Security
Weak
max-age=0
Content-Security-Policy
Missing
Not configured
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
  • • Add Content-Security-Policy header to prevent XSS attacks
  • • Consider adding Permissions-Policy to control browser features

Performance Headers

2 headers
Connection
Performance
close
Transfer-Encoding
Performance
chunked

Caching Headers

0 headers
No caching headers found

Content Headers

1 headers
Content-Type
Content
text/html

Server Headers

2 headers
Server
Server
cloudflare
X-Runtime
Server
0.002159

CORS Headers

2 headers
Access-Control-Allow-Methods
Cors
GET
Access-Control-Allow-Origin
Cors
*

Cookies Headers

1 headers
Set-Cookie
Cookies
_cfuvid=C80ojkqwLN_KgIOq614WVi6GM2XXKg__d99Sf0DGPn8-1767155825507-0.0.1.1-604800000; path=/; domain=.teachable.com; HttpOnly; Secure; SameSite=None

Other Headers

9 headers
Alt-Svc
Other
h3=":443"; ma=86400
Cf-Cache-Status
Other
DYNAMIC
Cf-Ray
Other
9b671464fb6e2414-IAD
Date
Other
Wed, 31 Dec 2025 04:37:05 GMT
Speculation-Rules
Other
"/cdn-cgi/speculation"
X-Download-Options
Other
noopen
X-Fedora-School-Id
Other
none
X-Permitted-Cross-Domain-Policies
Other
none
X-Request-Id
Other
2d653533-b73c-48ba-b203-63f762082861

Recommendations

Enable compression (gzip/brotli) to improve performance

Add Cache-Control header to optimize caching