What powers 
r2d3.us?
Last seen Aug 2026 · 10 technologies across 6 categories
Analytics
CDN
JavaScript graphics
JavaScript libraries
Miscellaneous
Web Frameworks
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| machine learning interactive | #1 | 15 |
| ml visual | #3 | 14 |
| machine learning visualization | #4 | 9 |
| intro to machine learning | #11 | 5 |
| machine learning graphic | #4 | 5 |
| machine learning graphics | #7 | 4 |
| machine learning infographic | #4 | 3 |
| intro to | #76 | 2 |
| machine learning illustrated | #7 | 2 |
| machine learning data visualization | #3 | 2 |
| decision trees machine learning | #58 | 2 |
| machine learning infographics | #7 | 1 |
| machine learning diagram | #32 | 1 |
| machine learning demo | #7 | 1 |
| machine learning concepts | #19 | 1 |
| ml model visualization | #8 | 1 |
| ml example | #13 | 1 |
| branches of machine learning | #17 | 0 |
| tree models machine learning | #59 | 0 |
| understanding ml | #15 | 0 |
| visualizing deep learning | #17 | 0 |
| visualize learning | #45 | 0 |
| visualization learning | #41 | 0 |
| visualization decision tree python | #90 | 0 |
| visualization decision tree | #16 | 0 |
The site's top keywords in Google (US), with the visits each one is estimated to bring per month.
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
AI Crawlers
No AI crawlers blocked
Audience
- 79% desktop
- 21% phone
United States
India
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
5.55 / 10 · ranked #152,599 of all domains
236 referring domains · OpenPageRank
Search traffic
69 est. monthly organic visits (US)
62 keywords in Google's top 30
Core Web Vitals
| LCP | 0.9 s |
| INP | 25 ms |
| CLS | 0.3 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- CDN: Cloudflare
- Weight: 1.5 MB · 21 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Cloudflare (104.21.15.18, IPv6)
- DNS: Cloudflare DNS
- Email: Namecheap Private Email
- Email security: SPF (soft fail), no DMARC record
- SSL: Google Trust Services, ECDSA P256, expires Nov 2026
- Common Crawl link graph: rank 447,677, 2 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| r2d3.us | 8 |
| www.r2d3.us | 6 |