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cotrainer.com

cotrainer.com ranks in the top 0.19% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 2 distinct hosts observed under it.

Explore cotrainer.com in the Web Graph

Connectivity

#254,573harmonic-centrality rank
Top percentile
0.19%
Hosts observed
2

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://cotrainer.com/ answered with HTTP 200.

DNS records

A
  • 108.156.172.64
  • 108.156.172.95
  • 108.156.172.26
  • 108.156.172.104
AAAA
No records found.
MX
  • 1 smtp.google.com.
NS
  • ns-1091.awsdns-08.org.
  • ns-2042.awsdns-63.co.uk.
  • ns-51.awsdns-06.com.
  • ns-945.awsdns-54.net.

Live preview

Screenshot of cotrainer.com

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

Since cotrainer.com 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
public, max-age=300, must-revalidate
Content-Encoding
Not sent

Security

Content-Security-Policy
Not sent
Strict-Transport-Security
max-age=31536000
X-Frame-Options
SAMEORIGIN
X-Content-Type-Options
nosniff
Referrer-Policy
strict-origin-when-cross-origin
Permissions-Policy
Not sent

What each security header does

Redirect chain

  1. 1.http://cotrainer.com/HTTP 301

    → https://cotrainer.com/

  2. 2.https://cotrainer.com/HTTP 200

Meta tags

Title
CoTrainer – Das Vereinssystem für Fußballvereine
Description
CoTrainer verbindet Vereinsorganisation, Trainingsplanung und Spielerentwicklung in einem System.
Canonical
https://cotrainer.de/
Robots
index, follow
Generator
Not set
Open Graph title
CoTrainer – Das Vereinssystem für Fußballvereine
Open Graph description
CoTrainer verbindet Vereinsorganisation, Trainingsplanung und Spielerentwicklung in einem System.
Open Graph image
https://cotrainer.com/og-image.png
Open Graph type
website
Twitter card
summary_large_image
Twitter title
CoTrainer – Das Vereinssystem für Fußballvereine
Twitter image
https://cotrainer.com/og-image.png

robots.txt

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

Sitemap declared:

  • https://cotrainer.com/sitemap.xml

Technology detected

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

  • Cloudflarecdn

    Server: cloudflare

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