klett-sprachen.de

.de crawl

First seen 2026-04-27 · Last seen 2026-05-18 · ok HTTP/1.1 200 1963 ms crawled 2026-05-04

DE · 206.81.31.186 · AS14061 DigitalOcean, LLC

Reputation 100/100

Classifying

HTML metadata

Title: Klett Sprachen - Lehrwerke, Lektüren und mehr für Ihren Unterricht
Description: Lehrwerke, Lektüren, Wortschatz-Material oder Downloads: Auf klett-sprachen.de finden Sie alles für den Sprachunterricht.
Language: de

Open Graph

url: https://www.klett-sprachen.de/
title: Klett Sprachen - Lehrwerke, Lektüren und mehr für Ihren Unterricht
description: Lehrwerke, Lektüren, Wortschatz-Material oder Downloads: Auf klett-sprachen.de finden Sie alles für den Sprachunterricht.

Technology

Server: nginx

Third-party hosts loaded (4)

res.cloudinary.com×35
cookiemanager.wirth-horn.de×2
rybbit.wirth-horn.de×1
static.zdassets.com×1

Social

Contact

Address: st Klett Sprachen GmbH 2026

Registration

Updated

2025-11-26

Name servers

ns11.zainternet.net.
ns7.za-internet.net.
ns8.za-domain.de.

DNS records live

NS

ns11.zainternet.net
ns7.za-internet.net
ns8.za-domain.de

MX

10 mx01.hornetsecurity.com
20 mx02.hornetsecurity.com
30 mx03.hornetsecurity.com
40 mx04.hornetsecurity.com

TXT

Show 4 TXT records

v=spf1 mx a a:etermin.net include:_spf.klett-sprachen.de include:_spf.wirth-horn.de include:inxserver.com include:spf.de.umantis.com include:spf.hornetsecurity.com include:mail.zendesk.com -all
MS=ms90771733
adobe-idp-site-verification=e8e939fb-cc74-49a7-b950-dc069d1545e4
apple-domain-verification=sIbttljr4HGFoWKG

Certificate (current)

Starfield Secure Certificate Authority - G2

from 2025-06-03 to 2026-07-03

Expires in 44 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 90/100 Checked live page: https://www.klett-sprachen.de/

present

strict-transport-security
content-security-policy
x-frame-options
x-content-type-options
referrer-policy
permissions-policy

findings

CSP allows unsafe inline scripts/styles
CSP uses wildcard sources

Header values

referrer-policy: strict-origin-when-cross-origin
x-frame-options: SAMEORIGIN
permissions-policy: geolocation=(),midi=(),camera=(),usb=(),magnetometer=(),accelerometer=(),speaker-selection=(),ambient-light-sensor=(),gyroscope=(),microphone=()
x-content-type-options: nosniff
content-security-policy: default-src 'self' *.klett-sprachen.de *.klett-sprachen.es *.zdassets.com klett-sprachensupport.zendesk.com *.wirth-horn.de *.paypal.com 'unsafe-eval' 'unsafe-inline' https://www.book2look.com https://www.youtube-nocookie.com https://web.inxmail.com https://responder.wt-safetag.com *.google-analytics.com https://www.googletagmanager.com https://www.google.com https://googleads.g.doubleclick.net *.vimeo.com https://connect.facebook.net *.jquery.com; img-src data: *; media-src data: *; style-src 'self' data: 'unsafe-inline' *.wirth-horn.de; font-src data: 'self';
strict-transport-security: max-age=15552000; preload, max-age=15768000