HTTP Headers Analysis for https://www.1und1.de

Detected Technologies from Headers

See all in URL Inspect 2

Envoy

Nginx

HTTP Security Headers

Status

Strict-Transport-Security

Present

max-age=15552001; includeSubDomains

Content-Security-Policy

Weak

frame-ancestors Analyze

Content-Security-Policy-Report-Only

Missing

Not configured Analyze

X-Frame-Options

Missing

Not configured

X-Content-Type-Options

Good

nosniff

Referrer-Policy

Good

strict-origin-when-cross-origin

Permissions-Policy

Missing

Not configured

Recommendations

• Increase HSTS max-age to at least 1 year and add includeSubDomains
• Significantly strengthen CSP directives
• Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
• Consider adding Permissions-Policy to control browser features

Performance Headers

Connection

Performance

close

Transfer-Encoding

Performance

chunked

connection: close
transfer-encoding: chunked

Caching Headers

Cache-Control

Caching

no-cache, no-store, max-age=0, must-revalidate

Expires

Caching

0

Pragma

Caching

no-cache

cache-control: no-cache, no-store, max-age=0, must-revalidate
expires: 0
pragma: no-cache

Content Headers

Content-Type

Content

text/html; charset=UTF-8

content-type: text/html; charset=UTF-8

Server Headers

Server

nginx

server: nginx

CORS Headers

Access-Control-Allow-Credentials

Cors

true

Access-Control-Allow-Headers

Cors

DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range

Access-Control-Allow-Methods

Cors

GET, POST, OPTIONS

Access-Control-Expose-Headers

Cors

Content-Length,Content-Range,Content-Type

access-control-allow-credentials: true
access-control-allow-headers: DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range
access-control-allow-methods: GET, POST, OPTIONS
access-control-expose-headers: Content-Length,Content-Range,Content-Type

Cookies Headers

Set-Cookie

Cookies

set-cookie: DPX=v1:nQCSxTgvgm:2uwIgD8E:6a6b2025:de; Path=/; Expires=Thu, 30-Jul-26 09:57:52 GMT; HttpOnly; Secure; SameSite=Lax
tnt_sc=YWMscHNfaWQsZG0sc2UsbHAsdCxhcCxiayxtYyx3aW5fbWMsa3drLG1iaWQsenh1aWQKLCwxLCxldWUsMTc4NTQwMTg3MiwxLCwwOTRERjExLDA5NERGMTEsLCw%3D; Max-Age=2592000; Expires=Sat, 29 Aug 2026 08:57:52 GMT; Path=/; Domain=.1und1.de; Secure; HTTPOnly; SameSite=Lax
eue_delivery_session_id=2ff6d2da-abc6-4c85-8283-550862365c9f; Max-Age=1800; Expires=Thu, 30 Jul 2026 09:27:52 GMT; Path=/; Domain=1und1.de; Secure; HTTPOnly; SameSite=Lax

Other Headers

Date

Other

Thu, 30 Jul 2026 08:57:52 GMT

X-Appid

Other

cdp 1.0.373+A.88991d58a

X-Cdp-Session-Id

Other

X-Content-Release

Other

1785333563

X-Envoy-Upstream-Service-Time

Other

47

X-Request-Id

Other

e014c71e53296e5ad52ad2059e3b616e, e014c71e53296e5ad52ad2059e3b616e

X-Trace-Id

Other

cabfc9dd-78c1-436e-b04b-414273a88a16

date: Thu, 30 Jul 2026 08:57:52 GMT
x-appid: cdp 1.0.373+A.88991d58a
x-cdp-session-id: 
x-content-release: 1785333563
x-envoy-upstream-service-time: 47
x-request-id: e014c71e53296e5ad52ad2059e3b616e, e014c71e53296e5ad52ad2059e3b616e
x-trace-id: cabfc9dd-78c1-436e-b04b-414273a88a16

Recommendations

Enable compression (gzip/brotli) to improve performance