indexo.dev

grueneberg-schule.de

.de crawl

First seen 2026-05-08 · Last seen 2026-05-15 · ok HTTP/1.1 200 6290 ms crawled 2026-05-15

DE · 213.168.112.4 · AS8422 NetCologne Gesellschaft fur Telekommunikation mbH

Reputation 89/100 weak security headers dmarc monitor-only

Classifying

HTML metadata

Language
de
Generator
WordPress 6.9.4
Feeds

Technology

Server
nginx
CMS
WordPress

Registration

Updated
2022-11-30
Name servers
  • dns11.netcologne.de.
  • dns12.netcologne.de.
  • dns13.netcologne.de.
  • dns14.netcologne.de.

DNS records live

NS
  • dns11.netcologne.de
  • dns12.netcologne.de
  • dns13.netcologne.de
  • dns14.netcologne.de
MX
  • 10 pls1.netcologne.de

Email authentication partial

SPF
v=spf1 mx include:_spf.pls.netcologne.de ~all
softfail (~all)
DMARC
v=DMARC1; p=none; rua=mailto:edu-servers@netcologne-its.de; ruf=mailto:edu-servers@netcologne-its.de; fo=1; adkim=r; aspf=r; ri=604800
policy: none (monitoring only)
DKIM
no key found at common selectors

Certificate (current)

R12
from 2026-04-13 to 2026-07-12
Expires in 52 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://www.grueneberg-schule.de/

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

Links to (1)

Linked from (1)