indexo.dev

ctf0.de

.de crawl

First seen 2026-04-14 · Last seen 2026-05-06 · ok HTTP/1.1 200 321 ms crawled 2026-05-07

US · 185.199.108.153 · AS54113 Fastly, Inc.

Reputation 100/100

Classifying

HTML metadata

Title
CyberTaskForce Zero
Description
CTF team
Language
en
Generator
Hugo 0.128.2
Canonical
/
Feeds

Open Graph

url
/
title
CyberTaskForce Zero
locale
en
site name
CyberTaskForce Zero
description
CTF team

Technology

CDN
Fastly
Server
GitHub.com
CMS
Hugo

Social

Registration

Updated
2024-09-09
Name servers
  • helium.ns.hetzner.de.
  • hydrogen.ns.hetzner.com.
  • oxygen.ns.hetzner.com.

DNS records live

NS
  • helium.ns.hetzner.de
  • hydrogen.ns.hetzner.com
  • oxygen.ns.hetzner.com
MX
  • 10 mail.ctf0.de

Email authentication strong

SPF
v=spf1 redirect=horlabs.de
no all qualifier
DMARC
v=DMARC1; p=quarantine; rua=mailto:postmaster@horlabs.de; ruf=mailto:postmaster@horlabs.de
policy: quarantine
DKIM
  • default: v=DKIM1; h=sha256; k=rsa; s=email; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAzGi64cgELog8aHhjHPlnlVou5xJu8NkASFLykq+j9AKc5h/8uyeSdyOh9T5…
selectors probed

Certificate (current)

R12
from 2026-04-19 to 2026-07-18
Expires in 61 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 50/100 Checked live page: https://ctf0.de/

present
  • strict-transport-security
findings
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
strict-transport-security
max-age=31556952

Links to (1)

Linked from (1)