HTTP Headers Analysis for https://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:SGFerqNLi7:DEfYBx7b:6a68ec9d:de; Path=/; Expires=Tue, 28-Jul-26 17:53:28 GMT; HttpOnly; Secure; SameSite=Lax
tnt_sc=YWMscHNfaWQsZG0sc2UsbHAsdCxhcCxiayxtYyx3aW5fbWMsa3drLG1iaWQsenh1aWQKLCwxLCxldWUsMTc4NTI1NzYwOCwxLCwwOTRERjExLDA5NERGMTEsLCw%3D; Max-Age=2592000; Expires=Thu, 27 Aug 2026 16:53:28 GMT; Path=/; Domain=.1und1.de; Secure; HTTPOnly; SameSite=Lax
eue_delivery_session_id=20c62239-8e20-43c2-85c4-00e768455795; Max-Age=1800; Expires=Tue, 28 Jul 2026 17:23:28 GMT; Path=/; Domain=1und1.de; Secure; HTTPOnly; SameSite=Lax

Other Headers

Date

Other

Tue, 28 Jul 2026 16:53:28 GMT

X-Appid

Other

cdp 1.0.372+A.b0a301b88

X-Cdp-Session-Id

Other

X-Content-Release

Other

1785227096

X-Envoy-Upstream-Service-Time

Other

85

X-Request-Id

Other

2fb8dbfd6bb42f7e80370b0849f9326b, 2fb8dbfd6bb42f7e80370b0849f9326b

X-Trace-Id

Other

f5a68d53-c062-4a71-aee0-f8276da70cc6

date: Tue, 28 Jul 2026 16:53:28 GMT
x-appid: cdp 1.0.372+A.b0a301b88
x-cdp-session-id: 
x-content-release: 1785227096
x-envoy-upstream-service-time: 85
x-request-id: 2fb8dbfd6bb42f7e80370b0849f9326b, 2fb8dbfd6bb42f7e80370b0849f9326b
x-trace-id: f5a68d53-c062-4a71-aee0-f8276da70cc6

Recommendations

Enable compression (gzip/brotli) to improve performance