klett-corporate-education.de

.de crawl

First seen 2026-04-11 · Last seen 2026-05-19 · ok HTTP/1.1 200 7859 ms crawled 2026-05-19

DE · 195.201.115.152 · AS24940 Hetzner Online GmbH

Reputation 87/100 weak security headers no dmarc policy

sector education type homepage

HTML metadata

Title: Berufliche Weiterbildung digital - Klett Corporate Education
Description: Klett Corporate Education bündelt 800+ Angebote 6 renommierter Fern(hoch-)schulen aus einer Hand, davon über 300 förderfähige Weiterbildungen.
Language: de
Generator: TYPO3 CMS
Canonical: https://www.klett-corporate-education.de/

Open Graph

title: Innovative Lösungen für berufliche Weiterbildungen
description: Klett Corporate Education bündelt 800+ Angebote 6 renommierter Fern(hoch-)schulen aus einer Hand, davon über 300 förderfähige Weiterbildungen.

Technology

Server: Apache

Analytics

Google Tag Manager

Cookie consent

Usercentrics

Third-party hosts loaded (3)

app.usercentrics.eu×1
assets.calendly.com×1
www.googletagmanager.com×1

Social

Registration

Updated

2024-04-29

Name servers

nsa6.schlundtech.de.
nsb6.schlundtech.de.
nsc6.schlundtech.de.
nsd6.schlundtech.de.

DNS records live

NS

nsa6.schlundtech.de
nsb6.schlundtech.de
nsc6.schlundtech.de
nsd6.schlundtech.de

MX

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

Verified for

Google
Microsoft 365

Email authentication weak

SPF

v=spf1 a mx ip4:213.157.13.165 ip4:213.157.16.3 include:spf.protection.outlook.com include:spf.hornetsecurity.com -all

strict (-all)

DMARC

not published

DKIM

selector1: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA5xv8xEpN8lXZHXRw/lj1vpBCLkkaX/jHSW7Yp24we5dp3obHMTr58zamlszMrEK6CzWkb1ue6mIZvL…

selectors probed

Certificate (current)

R13

from 2026-05-15 to 2026-08-13

Expires in 84 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 40/100 Checked live page: https://www.klett-corporate-education.de/

present

x-content-type-options

findings

missing HSTS
missing Content Security Policy
missing frame protection
missing Referrer Policy
missing Permissions Policy

Header values

x-content-type-options: nosniff