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Domain report

doi.org

doi.org ranks in the top 0.000053% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 100 distinct hosts observed under it.

Explore doi.org in the Web Graph

Connectivity

#71harmonic-centrality rank
Top percentile
0.000053%
Hosts observed
100

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

DNS records

A
  • 104.26.4.132
  • 104.26.5.132
  • 172.67.69.3
AAAA
  • 2606:4700:20::681a:484
  • 2606:4700:20::681a:584
  • 2606:4700:20::ac43:4503
MX
  • 10 mx.zoho.eu.
  • 20 mx2.zoho.eu.
  • 50 mx3.zoho.eu.
NS
  • josh.ns.cloudflare.com.
  • zita.ns.cloudflare.com.

Live preview

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

Domain registration (WHOIS / RDAP)

Registrar
Cloudflare, Inc.
Registered
1999-01-19
Expires
2035-01-19
Last changed
2026-08-12

Nameservers: josh.ns.cloudflare.com, zita.ns.cloudflare.com

Status: client transfer prohibited

How to read WHOIS and RDAP data

SSL certificate

Certificate Transparency lookup failed (HTTP 502).

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
max-age=31536000; includeSubDomains; preload
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://doi.org/HTTP 301

    → https://doi.org/

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

    → https://www.doi.org/

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

Meta tags

Title
Home Page
Description
Not set
Canonical
Not set
Robots
Not set
Generator
Hugo 0.165.0
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

doi.org has no robots.txt.

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 0.165.0"

Related domains

Linked with doi.org

Domains that link to it or that it links to, best connected first.

Similar connectivity

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