indexo.dev

gymnasium-otterndorf.de

.de crawl

First seen 2026-05-14 · Last seen 2026-05-19 · ok HTTP/1.1 200 2051 ms crawled 2026-05-19

DE · 88.99.30.134 · AS24940 Hetzner Online GmbH

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title
Startseite
Language
en
Feeds

Open Graph

url
https://gymnasium-otterndorf.de/
title
Gymnasium Otterndorf
description
Auf unserer Webseite findest du alle notwendigen Informationen über Schulfächer, AGs, die Anmeldung, Termine und sogar unseren Podcast. Schau dich einfach mal um.

Technology

Server
nginx

Contact

Email
Phone

Registration

Updated
2021-01-09
Name servers
  • ns53.domaincontrol.com.
  • ns54.domaincontrol.com.

DNS records live

NS
  • ns53.domaincontrol.com
  • ns54.domaincontrol.com
MX
  • 0 gymnasiumotterndorf-de02c.mail.protection.outlook.com
Verified for
  • Microsoft 365

Email authentication weak

SPF
v=spf1 include:secureserver.net -all
strict (-all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

R13
from 2026-04-28 to 2026-07-27
Expires in 67 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://gymnasium-otterndorf.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)