gtb-gebaeudetechnik.de

.de crawl

First seen 2026-05-30 · Last seen 2026-06-01 · ok HTTP/1.1 200 492 ms crawled 2026-05-31

DE · 37.17.229.204 · AS48324 webgo GmbH

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title: GTB Gebäudetechnik Berlin GmbH

Technology

Server: Apache
jQuery: 3.4.1 known XSS (<3.5)

Analytics

Google Tag Manager

Third-party hosts loaded (2)

cdn.consentmanager.net×1
www.googletagmanager.com×1

Social

Contact

Phone

+493067803938

Registration

Updated

2022-02-01

Name servers

ns1.first-ns.de.
robotns2.second-ns.de.
robotns3.second-ns.com.

DNS records live

NS

ns1.first-ns.de
robotns2.second-ns.de
robotns3.second-ns.com

MX

10 mailin.handwerkspartner.de

TXT

have-i-been-pwned-verification=163c3cd0461f682c8f3c0198c4832fd6

Verified for

Apple
Google
Meta
Microsoft 365

Email authentication weak

SPF: v=spf1 a mx include:spf.protection.outlook.com include:spf-de.emailsignatures365.com -all
strict (-all)
DMARC: not published
DKIM: no key found at common selectors

Certificate (current)

R12

from 2026-05-20 to 2026-08-18

Expires in 76 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 75/100 Checked live page: https://www.gtb-gebaeudetechnik.de/

present

strict-transport-security
content-security-policy
x-content-type-options

findings

short HSTS max-age
missing frame protection
missing Referrer Policy
missing Permissions Policy

Header values

x-content-type-options: nosniff
content-security-policy: frame-ancestors 'self';
strict-transport-security: max-age=0; includeSubDomains