indexo.dev

gymnasium-zitadelle.de

.de crawl

First seen 2026-04-14 · Last seen 2026-05-07 · ok HTTP/1.1 200 2925 ms crawled 2026-05-07

FR · 5.175.14.141 · AS8972 Host Europe GmbH

Reputation 87/100 weak security headers no dmarc policy

sector education type homepage

HTML metadata

Title
Gymnasium Zitadelle der Stadt Jülich
Description
Gymnasium Zitadelle der Stadt Jülich
Language
de
Generator
All in One SEO (AIOSEO) 4.7.2
Canonical
https://www.gymnasium-zitadelle.de/
Feeds

Open Graph

url
https://www.gymnasium-zitadelle.de/
title
Gymnasium Zitadelle der Stadt Jülich
locale
de_DE
site name
Gymnasium Zitadelle Jülich – Modernes Lernen in der historischen Festung
description
Gymnasium Zitadelle der Stadt Jülich

Technology

Server
Apache
CMS
WordPress
Fonts
  • Google Fonts

Third-party hosts loaded (3)

  • fonts.googleapis.com×2
  • netdna.bootstrapcdn.com×2
  • gmpg.org×1

Registration

Updated
2021-01-08
Name servers
  • ns77.domaincontrol.com.
  • ns78.domaincontrol.com.

DNS records live

NS
  • ns77.domaincontrol.com
  • ns78.domaincontrol.com
MX
  • 1 gymnasiumzitadelle-de02c.mail.protection.outlook.com
Verified for
  • Google

Email authentication partial

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

Certificate (current)

Starfield Secure Certificate Authority - G2
from 2025-06-14 to 2026-07-14
Expires in 54 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://www.gymnasium-zitadelle.de/

findings
  • missing HSTS
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy

Links to (6)

Linked from (1)