indexo.dev

rheinkolleg.de

.de crawl

First seen 2026-04-16 · Last seen 2026-05-11 · ok HTTP/1.1 200 6062 ms crawled 2026-05-11

DE · 23.88.20.53 · AS24940 Hetzner Online GmbH

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title
Rheinkolleg e.V.
Language
de
Generator
WordPress 6.7.5
Feeds

Technology

Server
nginx
CMS
WordPress
Fonts
  • Google Fonts

Third-party hosts loaded (1)

  • fonts.googleapis.com×1

Contact

Phone

Registration

Updated
2013-07-24
Name servers
  • ns1.first-ns.de.
  • robotns2.second-ns.de.
  • robotns3.second-ns.com.

DNS records live

NS
  • ns1.first-ns.de
  • robotns2.second-ns.de
  • robotns3.second-ns.com
MX
  • 5 x-pr.com

Email authentication weak

SPF
v=spf1 +a +mx -all
strict (-all)
DMARC
not published
DKIM
  • default: v=DKIM1; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDU30+2w5a1allaY9bNoGZYCXHbiFGzbttwzXEgR1FGmlgmVLg1VddeuO4jJocmDBfgNfbW1OKLndeiu8LwvV3bVbQS3…
selectors probed

Certificate (current)

R13
from 2026-04-01 to 2026-06-30
Expires in 40 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://www.rheinkolleg.de/

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

Linked from (1)