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Domain report

cryptool.org

cryptool.org ranks in the top 0.31% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 6 distinct hosts observed under it.

Explore cryptool.org in the Web Graph

Connectivity

#419,100harmonic-centrality rank
Top percentile
0.31%
Hosts observed
6

From the Common Crawl cc-main-2026-jul-aug-sep hyperlink graph, 133,241,980 domains total. What this rank means

HTTPS reachability

200HTTP status

https://cryptool.org/ answered with HTTP 200.

DNS records

A
  • 137.193.65.237
AAAA
No records found.
MX
  • 10 mx1.mail.rz.unibw-muenchen.de.
  • 10 mx2.mail.rz.unibw-muenchen.de.
  • 10 mx3.mail.rz.unibw-muenchen.de.
NS
  • ns1.domaindiscount24.net.
  • ns2.domaindiscount24.net.
  • ns3.domaindiscount24.net.

Live preview

Screenshot of cryptool.org

This site sends "X-Frame-Options: sameorigin", which blocks embedding it here.

Since cryptool.org can't be embedded live, this is a captured screenshot instead — a snapshot from whenever it was last rendered, not necessarily this exact moment.

Domain registration (WHOIS / RDAP)

RDAP lookup failed (HTTP 429).

How to read WHOIS and RDAP data

SSL certificate

Certificate Transparency lookup failed (HTTP 429).

How to check when a certificate expires

HTTP & security headers

Response

Server
cloudflare
Content-Type
text/html
Cache-Control
Not sent
Content-Encoding
Not sent

Security

Content-Security-Policy
frame-ancestors 'self' https://it-sicherheit.de/; upgrade-insecure-requests
Strict-Transport-Security
max-age=31536000; includeSubDomains; preload
X-Frame-Options
sameorigin
X-Content-Type-Options
nosniff
Referrer-Policy
same-origin
Permissions-Policy
accelerometer=(), camera=(), geolocation=(), gyroscope=(), magnetometer=(), microphone=(), midi=(), payment=(), usb=()

What each security header does

Redirect chain

  1. 1.http://cryptool.org/HTTP 301

    → https://cryptool.org/

  2. 2.https://cryptool.org/HTTP 301

    → https://www.cryptool.org/

  3. 3.https://www.cryptool.org/HTTP 301

    → https://www.cryptool.org/en/

  4. 4.https://www.cryptool.org/en/HTTP 200

Meta tags

Title
Homepage – CrypTool
Description
Play with cryptological tools online, learn cryptology, and solve puzzles. We want to create interest in cryptology and raise awareness for cyber security.
Canonical
Not set
Robots
Not set
Generator
Not set
Open Graph title
Not set
Open Graph description
Not set
Open Graph image
Not set
Open Graph type
Not set
Twitter card
Not set
Twitter title
Not set
Twitter image
Not set

robots.txt

Disallow rules (User-agent: *)
0
Disallow rules (other agents)
0

No Sitemap declared in robots.txt.

Technology detected

Best-effort, based on a small set of well-known signals — this may be incomplete.

  • Cloudflarecdn

    Server: cloudflare

  • Next.jsframework

    Found "_next/static/" in the page's HTML

Related domains

Similar connectivity

Domains ranked just above and below it in the same snapshot.