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Domain report

crossref.org

crossref.org ranks in the top 0.0043% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 65 distinct hosts observed under it.

Explore crossref.org in the Web Graph

Connectivity

#5,707harmonic-centrality rank
Top percentile
0.0043%
Hosts observed
65

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://crossref.org/ answered with HTTP 200.

DNS records

A
  • 100.56.129.154
  • 98.94.179.15
  • 98.84.233.168
  • 35.169.5.200
AAAA
No records found.
MX
  • 10 aspmx.l.google.com.
  • 10 aspmx3.googlemail.com.
  • 20 alt1.aspmx.l.google.com.
  • 20 alt2.aspmx.l.google.com.
  • 30 aspmx2.googlemail.com.
NS
  • ns-1052.awsdns-03.org.
  • ns-1629.awsdns-11.co.uk.
  • ns-473.awsdns-59.com.
  • ns-659.awsdns-18.net.

Live preview

This is a live, sandboxed embed of crossref.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
Cache-Control
Not sent
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://crossref.org/HTTP 301

    → https://crossref.org/

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

    → https://www.crossref.org/

  3. 3.https://www.crossref.org/HTTP 200

Meta tags

Title
Crossref
Description
Crossref is open infrastructure linking the world's research. 26,500 members, 171 countries, 2.1 billion monthly API queries.
Canonical
https://www.crossref.org/
Robots
Not set
Generator
Hugo 0.139.4
Open Graph title
You are Crossref - Crossref
Open Graph description
Crossref is open infrastructure linking the world's research. 26,500 members, 171 countries, 2.1 billion monthly API queries.
Open Graph image
https://www.crossref.org/images/homepage-images/travertine-terraced-mineral-pools-unknown_1920x500.jpg
Open Graph type
website
Twitter card
Not set
Twitter title
Not set
Twitter image
Not set

robots.txt

Disallow rules (User-agent: *)
3
Disallow rules (other agents)
0

Sitemap declared:

  • https://www.crossref.org/sitemap.xml

Technology detected

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

  • Cloudflarecdn

    Server: cloudflare

  • Hugoframework

    <meta name="generator"> = "Hugo 0.139.4"

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