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=D6C034FE52FD61D07E68BD9AC75D8783~YAAQips+Fw6fWxWcAQAAKVXzMB5p6HRs9xJa0jqLzj36HL5CcHTJIxifI1vMn9dj3BeVSrO0HD7IMSeP0GmvBSntfv5plTLnkwGHvpsTybu1YTrA5csQaTowOTczZeu0PihfP2aNGaiTVVd9b/EgpV9TCNnfFo06gVERtmaR8wWihsRZJhIgJiEZHIDNgbZ0tsIT4ryZbza0yK9jd2qXCDmCPI0ga2X1kxtrq3ysTPdBB2d8tMAJ/hW3eRGwaRDJUea0G7JLlQrNnPf1NsSU6GZYdI1+8uqOSTtNPHaZyj6KaZfYjSYHie6Ugh9wwKxnaqAP407uk7Rk7TdPGNztPcDdE2iz75M1Zx9f7BIQ~4274498~3752758; Domain=.groupon.be; Path=/; Expires=Fri, 06 Feb 2026 07:16:17 GMT; Max-Age=14398

Other Headers

20 headers
Date
Other
Fri, 06 Feb 2026 03:16:19 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=1454, rCon;dur=0, rHdr;dur=1454, hbi;dur=1433
X-Akamai-Transformed
Other
0 - 0 -
X-Application
Other
Pull-Itier
X-B-Cookie
Other
d762ec0d-7792-474f-a2ec-0d7792574f3a
X-B3-Traceid
Other
8e06fc000068436ebae9fd9dbf3b68c2
X-Destination
Other
tls_conveyor_pull_itier
X-Envoy-Upstream-Service-Time
Other
1454
X-External-Request-Id
Other
true
X-Forwarded-Proto
Other
https
X-Mtls-Upstream-Time
Other
1433
X-Original-Request-Id
Other
8e06fc00-0068-436e-bae9-fd9dbf3b68c2
X-Page-Id
Other
582869dc-d58b-40ef-a869-dcd58bc0efeb-1770347777834-TH0
X-Request-Id
Other
8e06fc00-0068-436e-bae9-fd9dbf3b68c2,8e06fc00-0068-436e-bae9-fd9dbf3b68c2
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
582869dc-d58b-40ef-a869-dcd58bc0efeb
X-Signifyd-Cookie
Other
29e0bb9b-0d26-4ac6-a0bb-9b0d266ac6c6
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