g-u.com

.com crawl

First seen 2026-04-30 · Last seen 2026-05-19 · ok HTTP/1.1 200 4785 ms crawled 2026-05-08

US · 159.60.157.20 · AS35280 F5 Networks SARL

Reputation 100/100

Classifying

HTML metadata

Title: Fenster- / Türtechnik und Gebäudemanagementsystemen | Gretsch-Unitas GmbH
Description: Öffnen, bewegen, schließen, sichern: Die GU-Gruppe ist Hersteller von Fenster- und Türtechnik, Automatischen Eingangs- sowie Gebäudemanagementsystemen
Language: de-DE
Canonical: /de-de

Technology

Server: volt-adc
CMS: Gatsby

Analytics

Google Tag Manager

Cookie consent

Usercentrics

Third-party hosts loaded (3)

web.cmp.usercentrics.eu×1
www.google.com×1
www.googletagmanager.com×1

Social

Contact

Email

info@g-u.de

Phone

+49 7156 301-0

Registration

Registrar

united-domains GmbH

Created

1996-06-12

Expires

2026-06-11 22 days left

Updated

2026-03-24

Name servers

ns1.f5clouddns.com
ns2.f5clouddns.com

DNS records live

NS

ns1.f5clouddns.com
ns2.f5clouddns.com

MX

10 gu-com0c.mail.protection.outlook.com

TXT

Show 4 TXT records

v=DMARC1; p=reject; fo=0;
QvQDGc4RgwX2RSqJQEMyIGRz2pmMNLPygfGRHpdqS2Y0j+fmLVyhyZEOaymQ8YECWkW2HlUYQZcFHwnuHIxRkQ==
atlassian-domain-verification=3EVpwT3XWOqgOaQ2dyUMpqqXNXLNrabvQzlkmz5x44FI2YtDTrMvyOQD5TUdryOp
MS=ms16891398

Email authentication strong

SPF

v=spf1 include:spf.g-u.de include:spf.protection.outlook.com -all

strict (-all)

DMARC

v=DMARC1; p=reject; ruf=mailto:dmarc-ruf@agena.de; fo=1; ri=2592000;

policy: reject (enforced)

DKIM

selector1: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArW0lAMqm/pclLpsFFsf1v+GKUUZST1lLJu1kvTCgIeo+CEywqyZa092hzoLnP5G2XxlNDuyyHQ1t8D…

selectors probed

Certificate (current)

from 2026-04-22 to 2026-07-21

Expires in 62 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 60/100 Checked live page: https://www.g-u.com/de-de

present

strict-transport-security
content-security-policy

findings

CSP allows unsafe inline scripts/styles
CSP uses wildcard sources
missing frame protection
missing content type protection
missing Referrer Policy
missing Permissions Policy

Header values

content-security-policy: default-src 'self'; script-src 'report-sample' 'self' 'unsafe-inline' 'unsafe-eval' https://*.leadxperience.de https://svrdntfctn.com https://*.bootstrapcdn.com https://*.cloudflare.com https://*.doubleclick.net https://*.github.io https://*.google-analytics.com https://*.google.com https://*.googleapis.com https://*.googletagmanager.com https://*.gstatic.com https://*.jquery.com https://*.jsdelivr.net https://*.maxcdn.com https://*.usercentrics.eu https://sst.g-u.com https://sst-staging.g-u.com https://appsforoffice.microsoft.com https://ajax.aspnetcdn.com; style-src 'unsafe-inline' 'self' https://*.bootstrapcdn.com https://*.jsdelivr.net https://*.googleapis.com https://*.googletagmanager.com https://*.office.net; img-src 'self' data: https://*.leadxperience.de https://i.ytimg.com https://*.gu-gruppe.de https://*.usercentrics.eu https://*.googletagmanager.com https://*.gstatic.com https://*.googleapis.com https://*.g-u.com; font-src 'self' https://*.gstatic.com https://*.office.net;
strict-transport-security: max-age=63072000; includeSubDomains;