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Domain report

react-study.org

react-study.org ranks in the top 0.12% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 4 distinct hosts observed under it.

Explore react-study.org in the Web Graph

Connectivity

#161,396harmonic-centrality rank
Top percentile
0.12%
Hosts observed
4

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://react-study.org/ answered with HTTP 200.

DNS records

A
  • 216.150.1.1
AAAA
No records found.
MX
  • 10 mx.simply.com.
NS
  • ns1.simply.com.
  • ns2.simply.com.
  • ns3.simply.com.

Live preview

This is a live, sandboxed embed of react-study.org — not a copy. What it shows can change any time the site itself does.

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; charset=utf-8
Cache-Control
public, max-age=0, must-revalidate
Content-Encoding
Not sent

Security

Content-Security-Policy
Not sent
Strict-Transport-Security
max-age=63072000
X-Frame-Options
Not sent
X-Content-Type-Options
Not sent
Referrer-Policy
Not sent
Permissions-Policy
Not sent

What each security header does

Redirect chain

  1. 1.http://react-study.org/HTTP 308

    → https://react-study.org/

  2. 2.https://react-study.org/HTTP 308

    → https://www.react-study.org/

  3. 3.https://www.react-study.org/HTTP 200

Meta tags

Title
REACT – Tidlig opsporing og forebyggelse af åreforkalkning
Description
REACT er et forskningsstudie ledet af Rigshospitalet med fokus på tidlig opsporing og forebyggelse af åreforkalkning — blandt de største studier af sin art i Europa.
Canonical
https://react-study.org
Robots
Not set
Generator
Not set
Open Graph title
Tidlig opsporing og forebyggelse af åreforkalkning — REACT
Open Graph description
REACT er et forskningsstudie ledet af Rigshospitalet med fokus på tidlig opsporing og forebyggelse af åreforkalkning — blandt de største studier af sin art i Europa.
Open Graph image
Not set
Open Graph type
website
Twitter card
summary
Twitter title
Tidlig opsporing og forebyggelse af åreforkalkning — REACT
Twitter image
Not set

robots.txt

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

Sitemap declared:

  • https://react-study.org/sitemap.xml

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.