indexo.dev

3u.net

.net crawl dns

First seen 2026-04-23 · Last seen 2026-05-17 · ok HTTP/1.1 200 9532 ms crawled 2026-05-17

DE · 78.47.62.47 · AS24940 Hetzner Online GmbH

Reputation 100/100

sector tech type homepage

HTML metadata

Title
3U HOLDING AG: Erfolg in Digitalisierung, Onlinehandel & Erneuerbaren Energien
Description
3U HOLDING AG investiert in ITK, erneuerbare Energien und SHK. Fokus auf E-Commerce und nachhaltiges Wachstum in Deutschland und Europa.
Language
de-DE
Generator
WordPress 6.9.4
Canonical
https://www.3u.net/
Translations
  • de
  • en
Feeds

Open Graph

url
https://www.3u.net/
title
Startseite
locale
de_DE
site name
3U HOLDING AG
description
3U HOLDING AG investiert in ITK, erneuerbare Energien und SHK. Fokus auf E-Commerce und nachhaltiges Wachstum in Deutschland und Europa.
locale:alternate
en_GB

Technology

Server
Apache
CMS
WordPress
Analytics
  • Google Tag Manager
Cookie consent
  • Cookiebot

Third-party hosts loaded (3)

  • www.googletagmanager.com×2
  • consent.cookiebot.com×1
  • gmpg.org×1

Social

Contact

Email
Phone

Registration

Registrar
InterNetX GmbH
Created
1999-02-25
Expires
2027-02-25 282 days left
Updated
2026-02-26
Name servers
  • ns1.3u.net
  • ns2.3u.net

DNS records live

NS
  • ns1.3u.net
  • ns2.3u.net
MX
  • 100 3u-net.mail.protection.outlook.com
TXT
  • google-site-verification=Yqhgv4PJ4AETV-61XiZr49eZoCLnBeq8B1KJPmLOwxU
  • apple-domain-verification=j0SKcmelUoD65pUn
  • MS=ms26206165

Email authentication strong

SPF
v=spf1 a:smtp.3u.net ip4:81.209.151.4 include:spf.protection.outlook.com include:mailing.eqs.com include:spf.nl2go.com a:mout.kundenserver.de -all
strict (-all)
DMARC
v=DMARC1; p=quarantine; rua=mailto:junk-e-mail@3u.net; ruf=mailto:junk-e-mail@3u.net
policy: quarantine
DKIM
no key found at common selectors

Certificate (current)

Encryption Everywhere DV TLS CA - G2
from 2026-04-15 to 2026-10-31
Expires in 165 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 95/100 Checked live page: https://www.3u.net/

present
  • strict-transport-security
  • content-security-policy
  • x-frame-options
  • x-content-type-options
  • referrer-policy
  • permissions-policy
findings
  • CSP allows unsafe inline scripts/styles
Header values
referrer-policy
strict-origin-when-cross-origin
x-frame-options
SAMEORIGIN
permissions-policy
microphone=(), camera=(), payment=()
x-content-type-options
nosniff
content-security-policy
script-src 'self' 'unsafe-inline' 'unsafe-eval' https://consent.cookiebot.com https://consentcdn.cookiebot.com https://www.googletagmanager.com; img-src 'self' https://imgsct.cookiebot.com https://consentcdn.cookiebot.com data:;
strict-transport-security
max-age=31536000; includeSubDomains; preload

Links to (4)

Linked from (2)