DNS Gurus
Cached · just now
21 Headers

HTTP Security Headers

Status
Strict-Transport-Security
Present
max-age=2678400; preload
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
  • • 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 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
Cache-Control
Caching
no-store, no-cache, max-age=0
Pragma
Caching
no-cache

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=OPCurW8A6Pi0I_PxLNrrEWo38YwUg.qHouaoGAJoAYs-1768611136969-0.0.1.1-604800000; path=/; domain=.sciencedirect.com; HttpOnly; Secure; SameSite=None

Other Headers

10 headers
Cf-Cache-Status
Other
BYPASS
Cf-Ray
Other
9bf1de743b5f056b-IAD
Date
Other
Sat, 17 Jan 2026 00:52:16 GMT
Tdm-Policy
Other
https://www.elsevier.com/tdm/tdmrep-policy.json
Tdm-Reservation
Other
1
X-Correlation-Id
Other
hpx-11b3d4c5-8442-4a73-b8ab-ec3a4737b15b
X-Els-Platform
Other
sdfe
X-Region
Other
us-east-1
X-Router
Other
true
X-Sdfe-Corr-Id
Other
hpx-11b3d4c5-8442-4a73-b8ab-ec3a4737b15b

Recommendations

Enable compression (gzip/brotli) to improve performance