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Domain report

root.cern

root.cern ranks in the top 0.32% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 1 distinct host observed under it.

Explore root.cern in the Web Graph

Connectivity

#429,621harmonic-centrality rank
Top percentile
0.32%
Hosts observed
1

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://root.cern/ answered with HTTP 200.

DNS records

A
  • 137.138.6.72
AAAA
  • 2001:1458:201:8b::100:23b
MX
No records found.
NS
  • ext-dns-2.cern.ch.
  • ext-dns-1.cern.ch.

Live preview

This is a live, sandboxed embed of root.cern — not a copy. What it shows can change any time the site itself does.

Domain registration (WHOIS / RDAP)

Registrar
CSC Corporate Domains, Inc.
Registered
2016-02-16
Expires
2027-02-16
Last changed
2026-08-12

Nameservers: ext-dns-1.cern.ch, ext-dns-2.cern.ch

Status: client transfer prohibited

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
private
Content-Encoding
Not sent

Security

Content-Security-Policy
Not sent
Strict-Transport-Security
Not sent
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://root.cern/HTTP 302

    → https://root.cern/

  2. 2.https://root.cern/HTTP 200

Meta tags

Title
ROOT: Analyzing petabytes of data, scientifically. - ROOT
Description
Data Analysis Framework
Canonical
https://root.cern/
Robots
Not set
Generator
Not set
Open Graph title
ROOT: Analyzing petabytes of data, scientifically.
Open Graph description
Data Analysis Framework
Open Graph image
https://root.cern/assets/images/ROOT-image-share.png
Open Graph type
website
Twitter card
summary_large_image
Twitter title
ROOT: Analyzing petabytes of data, scientifically.
Twitter image
https://root.cern/assets/images/ROOT-image-share.png

robots.txt

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

Sitemap declared:

  • https://root.cern/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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Similar connectivity

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