rethmann-gruppe.de

.de crawl

First seen 2026-04-13 · Last seen 2026-05-13 · ok HTTP/1.1 200 2213 ms crawled 2026-05-07

DE · 185.100.160.99 · AS3320 Deutsche Telekom AG

Reputation 100/100

Classifying

HTML metadata

Title

RETHMANN

Language

Generator

TYPO3 CMS

Canonical

https://www.rethmann-gruppe.de/

Translations

Technology

Server: Apache
CMS: Joomla

Registration

Updated

2025-03-13

Name servers

ns1.brandshelter.com.
ns2.brandshelter.de.
ns3.brandshelter.info.
ns4.brandshelter.net.
ns5.brandshelter.us.

DNS records live

NS

ns1.brandshelter.com
ns2.brandshelter.de
ns3.brandshelter.info
ns4.brandshelter.net
ns5.brandshelter.us

MX

10 mxa-008e5201.gslb.pphosted.com
10 mxb-008e5201.gslb.pphosted.com

TXT

Show 4 TXT records

43lk1w28+XiEa34Be0uX8oaZjTU2mYPzMwmvGQ9PajeBfrraXITk//CLtkKvwUDJUt3cntJns2byEHHHDpkgwQ==
MS=ms70356682
YgQWU/33CKmnQNzh+l5bCofG6Lj6aTa0Y20Ju3KUD9dsL/WoJVIrPk4j6Yg1BDn55FyqrzI4v7geK+wNDgd9qQ==
MS=ms56605970

Email authentication strong

SPF: v=spf1 include:_spf.rethmann-gruppe_de._d.easydmarc.pro -all
strict (-all)
DMARC: v=DMARC1;p=reject;rua=mailto:a14f106890@rua.easydmarc.eu;aspf=s;adkim=s;
policy: reject (enforced)
DKIM: no key found at common selectors

Certificate (current)

R12

from 2026-05-01 to 2026-07-30

Expires in 72 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 50/100 Checked live page: https://www.rethmann-gruppe.de

present

strict-transport-security

findings

missing Content Security Policy
missing frame protection
missing content type protection
missing Referrer Policy
missing Permissions Policy

Header values

strict-transport-security: max-age=31536000; includeSubDomains