indexo.dev

gs-buergerschule.de

.de crawl

First seen 2026-05-06 · Last seen 2026-05-06 · ok HTTP/1.1 200 1783 ms crawled 2026-05-13

DE · 78.47.205.24 · AS24940 Hetzner Online GmbH

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title
IServ - gs-buergerschule.de
Canonical
https://gs-buergerschule.de/iserv/auth/login?_target_path=%2Fiserv%2Fauth%2Fauth%3F_iserv_app_url%3D%2Fiserv%2F%26client_id%3Dafb53ddb-0076-4aac-8c6e-bf768852ec6d%26nonce%3D27848bb1-a603-4ff7-8911-cfa59617b379%26redirect_uri%3Dhttps%253A%2F%2Fgs-buergerschule.de%2Fiserv%2Fapp%2Fauthentication%2Fredirect%26response_type%3Dcode%26scope%3Dopenid%2520uuid%2520iserv%253Asession-id%2520iserv%253Aweb-ui%2520iserv%253A2fa%253Aconfiguration%2520iserv%253Aaccess-groups%26state%3DeyJ0eXAiOiJKV1QiLCJhbGciOiJFUzI1NiIsImtpZCI6IjEifQ.eyJyZWRpcmVjdF91cmkiOiJodHRwczovL2dzLWJ1ZXJnZXJzY2h1bGUuZGUvaXNlcnYvIiwibm9uY2UiOiIyNzg0OGJiMS1hNjAzLTRmZjctODkxMS1jZmE1OTYxN2IzNzkiLCJhZG1pbiI6ZmFsc2UsImlzcyI6Imh0dHBzOi8vZ3MtYnVlcmdlcnNjaHVsZS5kZS9pc2Vydi8iLCJleHAiOjE3ODY0NzYzNzYsIm5iZiI6MTc3ODcwMDMxNiwiaWF0IjoxNzc4NzAwMzc2LCJzaWQiOiIifQ.sd9ZNevEvL_haT9J9nLPbGggCTs6XkpqKsDsqDqdoAAjk09Tp1ESFszVQTaDyc7pk10u3FHDjqkcTTHqs5bw9Q

Technology

Server
IServ
CMS
Gatsby

Registration

Updated
2020-09-30
Name servers
  • ns1.iserv.eu.
  • ns2.iserv.eu.
  • ns3.iserv.eu.
  • ns4.iserv.eu.

DNS records live

NS
  • ns1.iserv.eu
  • ns2.iserv.eu
  • ns3.iserv.eu
  • ns4.iserv.eu
MX
  • 10 gs-buergerschule.de
  • 50 offline.iserv.eu

Email authentication weak

SPF
v=spf1 a mx a:relay1.iserv.eu a:relay2.iserv.eu a:relay3.iserv.eu a:relaybs.iserv.eu ?all
neutral (?all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

E8
from 2026-04-08 to 2026-07-07
Expires in 47 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 95/100 Checked live page: https://gs-buergerschule.de/iserv/auth/login?_target_path=/iserv/auth/auth?_iserv_app_url%3D%2Fiserv%2F%26client_id%3Dafb53ddb-0076-4aac-8c6e-bf768852ec6d%26nonce%3D27848bb1-a603-4ff7-8911-cfa59617b379%26redirect_uri%3Dhttps%253A%2F%2Fgs-buergerschule.de%2Fiserv%2Fapp%2Fauthentication%2Fredirect%26response_type%3Dcode%26scope%3Dopenid%2520uuid%2520iserv%253Asession-id%2520iserv%253Aweb-ui%2520iserv%253A2fa%253Aconfiguration%2520iserv%253Aaccess-groups%26state%3DeyJ0eXAiOiJKV1QiLCJhbGciOiJFUzI1NiIsImtpZCI6IjEifQ.eyJyZWRpcmVjdF91cmkiOiJodHRwczovL2dzLWJ1ZXJnZXJzY2h1bGUuZGUvaXNlcnYvIiwibm9uY2UiOiIyNzg0OGJiMS1hNjAzLTRmZjctODkxMS1jZmE1OTYxN2IzNzkiLCJhZG1pbiI6ZmFsc2UsImlzcyI6Imh0dHBzOi8vZ3MtYnVlcmdlcnNjaHVsZS5kZS9pc2Vydi8iLCJleHAiOjE3ODY0NzYzNzYsIm5iZiI6MTc3ODcwMDMxNiwiaWF0IjoxNzc4NzAwMzc2LCJzaWQiOiIifQ.sd9ZNevEvL_haT9J9nLPbGggCTs6XkpqKsDsqDqdoAAjk09Tp1ESFszVQTaDyc7pk10u3FHDjqkcTTHqs5bw9Q

present
  • strict-transport-security
  • content-security-policy
  • x-frame-options
  • x-content-type-options
  • referrer-policy
findings
  • missing Permissions Policy
Header values
referrer-policy
no-referrer
x-frame-options
SAMEORIGIN
x-content-type-options
nosniff
content-security-policy
default-src 'self'; img-src 'self' data:; media-src 'self' blob:; connect-src 'self' blob:; form-action 'self';
strict-transport-security
max-age=63072000;

Links to (1)

Linked from (1)