kuhlmann-leitungsbau.de

.de crawl

First seen 2026-04-14 · Last seen 2026-05-14 · ok HTTP/1.1 200 1056 ms crawled 2026-05-07

DE · 188.40.30.21 · AS24940 Hetzner Online GmbH

Reputation 100/100

Classifying

HTML metadata

Title

Home

Description

In einer Welt, die nachhaltige und effiziente Infrastrukturen zunehmend fordert, definiert Kuhlmann die Standards neu.

Language

Generator

WordPress 6.9.4

Canonical

https://www.kuhlmann-leitungsbau.de/

Feeds

Open Graph

url: https://www.kuhlmann-leitungsbau.de/
title: Kuhlmann Leitungsbau
locale: de_DE
site name: Kuhlmann Leitungsbau GmbH & Co. KG
description: In einer Welt, die nachhaltige und effiziente Infrastrukturen zunehmend fordert, definiert Kuhlmann die Standards neu.

Technology

Server: Apache
CMS: WordPress

Analytics

Google Tag Manager

Third-party hosts loaded (1)

www.googletagmanager.com×1

Social

Contact

Email

info@kuhlmann-leitungsbau.de.de

Phone

Registration

Updated

2020-10-28

Name servers

ns1024.ui-dns.de.
ns1026.ui-dns.com.
ns1046.ui-dns.org.
ns1097.ui-dns.biz.

DNS records live

NS

ns1024.ui-dns.de
ns1026.ui-dns.com
ns1046.ui-dns.org
ns1097.ui-dns.biz

MX

10 d300450.a.ess.de.barracudanetworks.com
20 d300450.b.ess.de.barracudanetworks.com

TXT

asRwCxyuO9zZGZCrRGB/7wkOpI02IsnFG3yENv5fL8wNdOrKX8hGcnGRxqCGaOMHltBWfO/ZvzFHOcThb9zIOg==
q2q4rk1vcto9mvrhtnfs15rn23

Verified for

Meta
Microsoft 365

Email authentication strong

SPF

v=spf1 ip4:134.119.19.28/32 ip4:185.167.148.144/32 include:spf.protection.outlook.com include:spf.eu.exclaimer.net include:spf.sosafe.de include:spf.ess.de.barracudanetworks.com include:hermes.datacon.biz -all

strict (-all)

DMARC

v=DMARC1; p=reject; rua=mailto:dmarc-reports@kuhlmann-leitungsbau.de; ruf=mailto:dmarc-forensic@kuhlmann-leitungsbau.de;

policy: reject (enforced)

DKIM

selector1: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA5WfcHcXo5RWbQLDrrLvp7XjtjEdmmKNjVKpEYU7AFSBdx7fKbucp2xHanun45BnsA6L6UbuXMo/dr8…
selector2: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqZ/2pEV14Xc//saQDUTeVfWdnuEErgcmySPuEBN8xdHkKh5drDvyu3lVQnsLkmIlJG1LAFi1RI68GR…

selectors probed

Certificate (current)

R13

from 2026-04-08 to 2026-07-07

Expires in 48 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 55/100 Checked live page: https://www.kuhlmann-leitungsbau.de/

present

strict-transport-security
permissions-policy

findings

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

Header values

permissions-policy: private-state-token-redemption=(self "https://www.google.com" "https://www.gstatic.com" "https://recaptcha.net" "https://challenges.cloudflare.com" "https://hcaptcha.com"), private-state-token-issuance=(self "https://www.google.com" "https://www.gstatic.com" "https://recaptcha.net" "https://challenges.cloudflare.com" "https://hcaptcha.com")
strict-transport-security: max-age=31536000; includeSubDomains; preload