fuu.de

.de crawl

First seen 2026-04-14 · Last seen 2026-05-17 · ok HTTP/1.1 200 1093 ms crawled 2026-05-08

DE · 93.191.50.107 · AS38927 Net-Build GmbH

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title: F+U Schulen | Hochschulen | Akademien | F+U
Description: Von der Grundschule bis hin zum Studium ▶ Nutzen Sie die vielfältige Palette an großartigen Bildungschancen in Heidelberg.
Language: de-DE
Generator: TYPO3 CMS
Canonical: https://www.fuu.de/

Open Graph

title: F+U
site name: F+U
description: Von der Grundschule bis hin zum Studium ▶ Nutzen Sie die vielfältige Palette an großartigen Bildungschancen in Heidelberg.

Technology

Server: Apache

Third-party hosts loaded (1)

portal.barrierefrei-tool.de×1

Social

Registration

Updated

2026-03-05

Name servers

ns1.netbuild.net.
ns2.netbuild.net.
ns3.netbuild.net.
ns4.netbuild.net.

DNS records live

NS

ns1.netbuild.net
ns2.netbuild.net
ns3.netbuild.net
ns4.netbuild.net

MX

0 fuu-de.mail.protection.outlook.com

TXT

Show 7 TXT records

ahrefs-site-verification_28ca209f66f66c01f16372462f75d4ccf4b27c72366317267a480f543ca6e346
asv=e3bf6bbf7cc8a404f44de690b717d3bf
google-site-verification=y3FDQQbxZ8e8-lszIgAuaL9NYdpoz7KGfV8rvCUwqd4
ms=ms58650508
0ed1fe018ac4ad65be1b364c879393d8f6b56c8045
adobe-idp-site-verification=b138fc0f7602b47ec29bdab71a027b3a61bc88bb7dc47b44663707e56dab4507
facebook-domain-verification=difcm31oo0bg76lh0phug70xs4l0qs

Email authentication strong

SPF

v=spf1 a mx include:spf.protection.outlook.com include:spf.crsend.com a:nb2305.yas.netbuild.net a:nb2304.yas.netbuild.net -all

strict (-all)

DMARC

v=DMARC1; p=quarantine

policy: quarantine

DKIM

selector1: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDG0KZPkqEFu8IQFJxnC6KggOxl4Tyl/l+J7aO61DWyoYVCHeneHWR7wRF+2HwKgaQdF6VvZlSZ9g6bk49DAI…

selectors probed

Certificate (current)

Sectigo Public Server Authentication CA DV R36

from 2025-06-30 to 2026-08-01

Expires in 74 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 40/100 Checked live page: https://www.fuu.de/

present

x-content-type-options

findings

missing HSTS
missing Content Security Policy
missing frame protection
missing Referrer Policy
missing Permissions Policy

Header values

x-content-type-options: nosniff