indexo.dev

siewerth-akademie.de

.de crawl

First seen 2026-05-04 · Last seen 2026-05-11 · ok HTTP/1.1 200 2216 ms crawled 2026-05-11

FR · 82.165.36.138 · AS8560 IONOS SE

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title
Start - Gustav-Siewerth-Akademie
Language
de
Generator
Contao Open Source CMS

Technology

Server
nginx
Fonts
  • Google Fonts

Third-party hosts loaded (1)

  • fonts.googleapis.com×1

Social

Registration

Updated
2013-09-09
Name servers
  • ns1.ns-serve.net.
  • ns2.ns-serve.net.

DNS records live

NS
  • ns1.ns-serve.net
  • ns2.ns-serve.net
MX
  • 10 siewerthakademie-de02b.mail.protection.outlook.com
Verified for
  • Microsoft 365

Email authentication weak

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

Certificate (current)

R12
from 2026-04-10 to 2026-07-09
Expires in 50 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://www.siewerth-akademie.de/cms/

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

Links to (2)

Linked from (1)