indexo.dev

schulen-flensburg.de

.de crawl

First seen 2026-04-14 · Last seen 2026-05-05 · ok HTTP/1.1 200 1641 ms crawled 2026-05-07

DE · 193.188.197.219 · AS8956 Stadt Flensburg

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title
Univention Portal

Technology

Server
nginx

Registration

Updated
2017-06-06
Name servers
  • ns.udag.de.
  • ns.udag.net.
  • ns.udag.org.

DNS records live

NS
  • ns.udag.de
  • ns.udag.net
  • ns.udag.org
MX
  • 10 mx00.udag.de
  • 20 mx01.udag.de
TXT
Show 4 TXT records
  • bak964n870rhdjpfd8s33dmimv
  • a402tg2i9f7lf9mvum49quhvlt
  • dpknvf34odekvuu7hsp4u82bv0
  • 3ddufrr8oghfk9q8v2alvdf3tu
Verified for
  • Google

Email authentication weak

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

Certificate (current)

Go Daddy Secure Certificate Authority - G2
from 2025-10-24 to 2026-11-25
Expires in 188 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 75/100 Checked live page: https://portal.schulen-flensburg.de/univention/portal/

present
  • strict-transport-security
  • content-security-policy
  • x-frame-options
  • x-content-type-options
findings
  • CSP allows unsafe inline scripts/styles
  • CSP uses wildcard sources
  • weak content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
x-frame-options
SAMEORIGIN
x-content-type-options
nosniff, nosniff
content-security-policy
default-src 'self' 'unsafe-inline' 'unsafe-eval' ; style-src-elem 'self' 'sha256-kDRQ3dagwwb3nrm8xnMC0VgLt6lNN98+2oajznduaKI='; font-src 'self'; img-src data: *; frame-src *; connect-src 'self' https://id.schulen-flensburg.de//; frame-ancestors 'self' https://id.schulen-flensburg.de//;
strict-transport-security
max-age=63072000; preload

Linked from (1)