DNS Gurus
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15 Headers

HTTP Security Headers

Status
Strict-Transport-Security
Present
max-age=2592000
Content-Security-Policy
Missing
Not configured
X-Frame-Options
Missing
Not configured
X-Content-Type-Options
Missing
Not configured
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 X-Content-Type-Options: nosniff
  • • 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, no-store, max-age=0
Pragma
Caching
no-cache

Content Headers

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

Server Headers

2 headers
Server
Server
Microsoft-IIS/10.0
X-Powered-By
Server
ASP.NET

CORS Headers

3 headers
Access-Control-Allow-Credentials
Cors
true
Access-Control-Allow-Origin
Cors
null
Access-Control-Expose-Headers
Cors
Access-Control-Allow-Origin,Sequence

Cookies Headers

1 headers
Set-Cookie
Cookies
ARRAffinitySameSite=bfefe2ef5a471810e679c00598e80de89417731a5936534527659daa32eb2bc8;Path=/;HttpOnly;SameSite=None;Secure;Domain=app.thebrain.com

Other Headers

3 headers
Blazor-Enhanced-Nav
Other
allow
Date
Other
Mon, 02 Feb 2026 17:19:16 GMT
Request-Context
Other
appId=cid-v1:f6bce407-4a41-4d3f-a088-30c11e105957

Recommendations

Enable compression (gzip/brotli) to improve performance

Consider removing X-Powered-By header to hide server technology