DNS Gurus
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29 Headers

HTTP Security Headers

Status
Strict-Transport-Security
Present
max-age=2628000
Content-Security-Policy
Missing
Not configured
X-Frame-Options
Excellent
DENY
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-Content-Type-Options: nosniff
  • • Add Referrer-Policy header (recommended: strict-origin-when-cross-origin)
  • • Consider adding Permissions-Policy to control browser features

Performance Headers

3 headers
Connection
Performance
Transfer-Encoding
Transfer-Encoding
Performance
chunked
Vary
Performance
Accept-Encoding, User-Agent

Caching Headers

1 headers
Cache-Control
Caching
private, max-age=0, no-cache, no-store, must-revalidate

Content Headers

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

Server Headers

1 headers
X-Powered-By
Server
Express

CORS Headers

0 headers
No CORS headers found

Cookies Headers

1 headers
Set-Cookie
Cookies
bm_sz=47B3F4F39812E05FD8F3EBEFC5D4517C~YAAQBWncF+dvLAacAQAARK/zCh51V2GhQoDpujEvFfr6/paqmmQgLIfJhC7UXIljBcc0/nqfqbS6McBVaVjytdZPRSNOQlrUBzDf7co2oDKI9mRVRz+l49NdNdvUEceTK3IJfeMkNIY2BU8OPqNuWKWRW3UoCt8a3UVqqrgaqwCW6xxywtC6hCb728GxFTldHf3dmRFuZ7pvhiROuhsbEnxPgXTOv4XbJfUzVcWjRpvxIroSvIJ+Oplofu1uF9MkoQYjw9XL9JFYjYGvfrZ+sEpjdprFyzPhEiSki32llK7qOdkAyo9NtecWFVdAmjEsnF9XvBqM0y8fzPS4+mHLOTSoeiaOsgqzYJtCDfQT~3421240~3162948; Domain=.groupon.be; Path=/; Expires=Thu, 29 Jan 2026 22:11:06 GMT; Max-Age=14398

Other Headers

20 headers
Date
Other
Thu, 29 Jan 2026 18:11:08 GMT
Link
Other
<https://www2.grouponcdn.com/browse/assets/home_desktop-f7805b283e.css>; rel=preload; as=style, <https://www2.grouponcdn.com/browse/assets/home_desktop-7509b6ffb1.js>; rel=preload; as=script
Server-Timing
Other
rReq;dur=1283, rCon;dur=0, rHdr;dur=1284, hbi;dur=1261
X-Akamai-Transformed
Other
0 - 0 -
X-Application
Other
Pull-Itier
X-B-Cookie
Other
b7e9faa4-de96-4632-a9fa-a4de96e63268
X-B3-Traceid
Other
41a5ba7dc9b2419bb5db6945b3956fc1
X-Destination
Other
tls_conveyor_pull_itier
X-Envoy-Upstream-Service-Time
Other
1284
X-External-Request-Id
Other
true
X-Forwarded-Proto
Other
https
X-Mtls-Upstream-Time
Other
1261
X-Original-Request-Id
Other
41a5ba7d-c9b2-419b-b5db-6945b3956fc1
X-Page-Id
Other
383c5bf7-0eb3-4575-bc5b-f70eb3b57517-1769710266759-TH0
X-Request-Id
Other
41a5ba7d-c9b2-419b-b5db-6945b3956fc1,41a5ba7d-c9b2-419b-b5db-6945b3956fc1
X-Request-Originated-From
Other
envoy-tls-side-car--ingress-https
X-Response-Served-From
Other
routing-service--public--eu-west-1--conveyor-production49
X-S-Cookie
Other
383c5bf7-0eb3-4575-bc5b-f70eb3b57517
X-Signifyd-Cookie
Other
058432d7-3d7e-4e77-8432-d73d7e6e77ae
X-Ua-Compatible
Other
IE=edge,chrome=1

Recommendations

Enable compression (gzip/brotli) to improve performance

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