DNS Gurus
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16 Headers

HTTP Security Headers

Status
Strict-Transport-Security
Excellent
max-age=31536000; includeSubDomains; preload
Content-Security-Policy
Good
default-src
X-Frame-Options
Excellent
DENY
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
  • • Strengthen CSP by removing 'unsafe-eval'
  • • 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
Vary
Performance
Origin

Caching Headers

0 headers
No caching headers found

Content Headers

2 headers
Content-Length
Content
139
Content-Type
Content
text/html; charset=utf-8

Server Headers

2 headers
Server
Server
Google Frontend
X-Powered-By
Server
Express

CORS Headers

1 headers
Access-Control-Allow-Credentials
Cors
true

Cookies Headers

1 headers
Set-Cookie
Cookies
listo_session=s%3AFAR8F-w4My-O0wLk9Oi9oB-fu1dNEmYQ.8cdUTuDuUru9QkbeiojdVPGbPEsakbM8y86M1knnMG4; Domain=.listoglobal.com; Path=/; Expires=Thu, 15 Jan 2026 08:44:20 GMT; HttpOnly; Secure; SameSite=None

Other Headers

4 headers
Alt-Svc
Other
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
Date
Other
Thu, 15 Jan 2026 00:44:20 GMT
Via
Other
1.1 google
X-Cloud-Trace-Context
Other
6621afb6863476cc948e83fe8efd3327

Recommendations

Enable compression (gzip/brotli) to improve performance

Add Cache-Control header to optimize caching

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