indexo.dev

online-sudokus.de

.de crawl

First seen 2026-05-11 · Last seen 2026-05-11 · ok HTTP/1.1 200 20186 ms crawled 2026-05-17

DE · 217.160.0.187 · AS8560 IONOS SE

Reputation 89/100 weak security headers dmarc monitor-only

Classifying

HTML metadata

Title
Sudoku online
Description
Spiele Sudoku gratis online. Bei uns finden Sie tausende Varianten. Es ist keine Registrierung nötig - einfach direkt losspielen und Sudokus knacken!
Language
de

Open Graph

url
https://www.online-sudokus.de/
title
Sudoku
site name
Online-Sudokus.de

Technology

Server
Apache
Ads
  • Google AdSense

Third-party hosts loaded (2)

  • pagead2.googlesyndication.com×2
  • www.facebook.com×1

Registration

Updated
2026-02-16
Name servers
  • ns1045.ui-dns.biz.
  • ns1045.ui-dns.com.
  • ns1045.ui-dns.de.
  • ns1045.ui-dns.org.

DNS records live

NS
  • ns1045.ui-dns.biz
  • ns1045.ui-dns.com
  • ns1045.ui-dns.de
  • ns1045.ui-dns.org
MX
  • 10 mx00.ionos.de
  • 10 mx01.ionos.de

Email authentication partial

SPF
v=spf1 include:_spf-eu.ionos.com ~all
softfail (~all)
DMARC
v=DMARC1; p=none;
policy: none (monitoring only)
DKIM
no key found at common selectors

Certificate (current)

Sectigo Public Server Authentication CA DV R36
from 2025-12-23 to 2027-01-07
Expires in 231 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 35/100 Checked over plain HTTP: http://www.online-sudokus.de/

findings
  • checked over plain HTTP
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy

Links to (1)

Linked from (1)