idu-duelmen.de

.de crawl

First seen 2026-04-19 · Last seen 2026-05-16 · ok HTTP/1.1 200 771 ms crawled 2026-05-13

DE · 85.13.140.118 · AS34788 Neue Medien Muennich GmbH

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title

Start / IDU Dülmen

Description

Die Mitglieder der IDU, der Interessengemeinschaft Dülmener Unternehmen e.V. tragen unternehmerisches Handeln und unternehmerische Wertvorstellungen engagiert in die Gesellschaft.

Language

Canonical

https://www.idu-duelmen.de/

Translations

Technology

Server: Apache

Third-party hosts loaded (1)

cdnjs.cloudflare.com×1

Social

Contact

Email

info@idu-duelmen.de

Registration

Updated

2011-07-28

Name servers

ns5.kasserver.com.
ns6.kasserver.com.

DNS records live

NS

ns5.kasserver.com
ns6.kasserver.com

MX

10 w00e3147.kasserver.com

Email authentication weak

SPF: v=spf1 a mx include:spf.kasserver.com ~all
softfail (~all)
DMARC: not published
DKIM: no key found at common selectors

Certificate (current)

R12

from 2026-03-25 to 2026-06-24

Expires in 34 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 45/100 Checked live page: https://www.idu-duelmen.de/

present

strict-transport-security

findings

short HSTS max-age
missing Content Security Policy
missing frame protection
missing content type protection
missing Referrer Policy
missing Permissions Policy

Header values

strict-transport-security: max-age=0