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Domain report

opensource.guide

opensource.guide ranks in the top 0.29% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 2 distinct hosts observed under it.

Explore opensource.guide in the Web Graph

Connectivity

#388,906harmonic-centrality rank
Top percentile
0.29%
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://opensource.guide/ answered with HTTP 200.

DNS records

A
  • 185.199.108.153
  • 185.199.109.153
  • 185.199.110.153
  • 185.199.111.153
AAAA
No records found.
MX
No records found.
NS
  • dns1.p06.nsone.net.
  • dns2.p06.nsone.net.
  • dns3.p06.nsone.net.
  • dns4.p06.nsone.net.

Live preview

This is a live, sandboxed embed of opensource.guide — 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
max-age=600
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://opensource.guide/HTTP 301

    → https://opensource.guide/

  2. 2.https://opensource.guide/HTTP 200

Meta tags

Title
Open Source Guides | Learn how to launch and grow your project.
Description
Learn how to launch and grow your project.
Canonical
https://opensource.guide/
Robots
Not set
Generator
Jekyll v3.10.0
Open Graph title
Open Source Guides
Open Graph description
Learn how to launch and grow your project.
Open Graph image
https://opensource.guide/assets/images/cards/default.png
Open Graph type
website
Twitter card
summary_large_image
Twitter title
Not set
Twitter image
Not set

robots.txt

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

Sitemap declared:

  • https://opensource.guide/sitemap.xml

Technology detected

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

  • Cloudflarecdn

    Server: cloudflare

Related domains

Similar connectivity

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