indexo.dev

lehrer.de

.de crawl

First seen 2026-04-30 · Last seen 2026-04-30 · ok HTTP/1.1 200 1818 ms crawled 2026-05-08

DE · 116.203.82.211 · AS24940 Hetzner Online GmbH

Reputation 89/100 weak security headers dmarc monitor-only

sector education type homepage

HTML metadata

Title
Lehrer.de - Fortbildungen für Lehrkräfte und Schulleitung
Description
Fortbildungen, Schulungen, Qualifizierungen für Lehrkräfte, Einsteiger in der Lehrberuf und Schulleitungen
Language
de

Technology

Server
Apache

Third-party hosts loaded (2)

  • cdnjs.cloudflare.com×3
  • code.jquery.com×1

Social

Contact

Email
Phone

Registration

Updated
2021-11-29
Name servers
  • ns35.domaincontrol.com.
  • ns36.domaincontrol.com.

DNS records live

NS
  • ns35.domaincontrol.com
  • ns36.domaincontrol.com
MX
  • 20 lehrer-de.mail.protection.outlook.com
TXT
  • brevo-code:1de835b041b7ce4d04e73c2374edc613
  • MS=ms46541850

Email authentication partial

SPF
v=spf1 include:spf.mailjet.com a mx ip4:136.243.67.67 include:spf.server-he.de include:spf.protection.outlook.com -all
strict (-all)
DMARC
v=DMARC1;p=none;rua=mailto:rua@dmarc.brevo.com
policy: none (monitoring only)
DKIM
  • selector1: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvoyLvacWMlku8U4PIXLmozwqh4cXzh3qJ0Zz39FQMzUrzWnupuYDZfbILLmaUaWeGtGxg+yl9nUBeR…
  • selector2: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA0gPYNBEo1rP1cGdLOkSHfYl8TIyoNvjxexiRdsyL3xHIuwp0/4gEQk7r5154I3za9vWjlhLyyfx5Hj…
  • mail: k=rsa;p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDeMVIzrCa3T14JsNY0IRv5/2V1/v2itlviLQBwXsa7shBD6TrBkswsFUToPyMRWC9tbR/5ey0nRBH0ZVxp+lsmTxid2Y2z…
selectors probed

Certificate (current)

E7
from 2026-04-14 to 2026-07-13
Expires in 55 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://lehrer.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)