Domain report
opensourcephysics.org
opensourcephysics.org ranks in the top 0.076% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 2 distinct hosts observed under it.
Connectivity
- Top percentile
- 0.076%
- 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
https://opensourcephysics.org/ answered with HTTP 200.
DNS records
- A
- 63.65.178.244
- AAAA
- No records found.
- MX
- 100 neptune.compadre.org.
- 200 pluto.compadre.org.
- NS
- ns-1290.awsdns-33.org.
- ns-146.awsdns-18.com.
- ns-1658.awsdns-15.co.uk.
- ns-959.awsdns-55.net.
- AS
- Server in network UUNET, AS701 · United States63.65.178.0/24, which holds 63.65.178.244
Live preview
This is a live, sandboxed embed of opensourcephysics.org — not a copy. What it shows can change any time the site itself does.
Domain registration (WHOIS / RDAP)
- Registrar
- Tucows Domains Inc.
- Registered
- 2001-07-02
- Expires
- 2027-07-02
- Last changed
- 2026-08-12
Nameservers: ns-1290.awsdns-33.org, ns-146.awsdns-18.com, ns-1658.awsdns-15.co.uk, ns-959.awsdns-55.net
Status: client transfer prohibited, client update prohibited
SSL certificate
Certificate Transparency lookup failed (HTTP 429).
HTTP & security headers
Response
- Server
- cloudflare
- Content-Type
- text/html;charset=UTF-8
- Cache-Control
- max-age=3, must-revalidate
- 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
Redirect chain
- 1.
http://opensourcephysics.org/HTTP 301→ https://www.compadre.org/osp/?
- 2.
https://www.compadre.org/osp/?HTTP 200
Meta tags
- Title
- Open Source Physics
- Description
- The Open Source Physics project seeks to create and distribute curricular material for physics computation and computational physics education at all levels.
- Canonical
- Not set
- Robots
- Not set
- Generator
- Not set
- 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
- Disallow rules (User-agent: *)
- 0
- Disallow rules (other agents)
- 0
No Sitemap declared in robots.txt.
Technology detected
Best-effort, based on a small set of well-known signals — this may be incomplete.
- Cloudflarecdn
Server: cloudflare
- Google Tag Manageranalytics
Found "googletagmanager.com/gtm.js" in the page's HTML
Related domains
Similar connectivity
Domains ranked just above and below it in the same snapshot.