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=FEB2FD57B2D738FDE83BBC355F2D590E~YAAQyWvcF2Fv7v2bAQAADUf0Dh4kMNmhoQLG2jrUr5SiaxRkyp9wV3KhAqTzUnTGFeRUx05I0ysQnlWbBzfs/ddzPCvrtJL9QksEGWNNJMP6AnJGFUPzf610kvg7LaTXu3/cxf5ULU+ziL1pM6DiiOUM/cdVoz5lmt7xGuwIwmcxW6ZuHxnhlPlt6NQ5CHOVCOfw5/3KH/OPkyyuj5/gRdsdfj4tibHfrGuxKawKfP+FSJniEz/2dEJhk5Wy+om2FFpL7dGpeclwdbpMBrSrgZKHSHDKn5elizWur6S1O/aaSj6ZfrY99DedvdiiXdaLp5T8+Viaf3eqeaM7fycWA/m7RWGaLIERXYhWSv+c~4470067~3291443; Domain=.groupon.be; Path=/; Expires=Fri, 30 Jan 2026 16:50:13 GMT; Max-Age=14398

Other Headers

20 headers
Date
Other
Fri, 30 Jan 2026 12:50:15 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=1683, rCon;dur=0, rHdr;dur=1683, hbi;dur=1656
X-Akamai-Transformed
Other
0 - 0 -
X-Application
Other
Pull-Itier
X-B-Cookie
Other
ffa31fae-7db1-4016-a31f-ae7db1601652
X-B3-Traceid
Other
36e81efa1e7346ec89516af2791eae79
X-Destination
Other
tls_conveyor_pull_itier
X-Envoy-Upstream-Service-Time
Other
1688
X-External-Request-Id
Other
true
X-Forwarded-Proto
Other
https
X-Mtls-Upstream-Time
Other
1656
X-Original-Request-Id
Other
36e81efa-1e73-46ec-8951-6af2791eae79
X-Page-Id
Other
855fb09e-3b93-4cac-9fb0-9e3b934cac43-1769777414078-TH0
X-Request-Id
Other
36e81efa-1e73-46ec-8951-6af2791eae79,36e81efa-1e73-46ec-8951-6af2791eae79
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
855fb09e-3b93-4cac-9fb0-9e3b934cac43
X-Signifyd-Cookie
Other
c703e164-931a-4b6f-83e1-64931abb6f02
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