What powers 
cellosaurus.org?
Last seen Oct 2026 · 7 technologies across 6 categories
Analytics
CDN
JavaScript libraries
Programming languages
Security
Web servers
AI Crawlers
Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Nov 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 84% desktop
- 16% phone
United States
India
United Kingdom
Italy
Spain
Germany
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.72 / 10 · ranked #296,211 of all domains
82 referring domains · OpenPageRank
Search traffic
7,700 est. monthly organic visits (US)
2,172 keywords in Google's top 30
Core Web Vitals
| LCP | 2.3 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 1700 ms |
Real user p75, Chrome UX Report, Oct 2026.
Page
- Language: English (United States)
- Weight: 0.4 MB · 32 requests
- Structured data: JSON-LD, Microdata
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- Cellosaurus
From the homepage's own structured data (Oct 2026) and Wikidata (CC0).
Infrastructure
- Registered Jul 2022 (4 years) via Register SpA, renews Jul 2027
- Hosted on Switch SWITCH (192.33.215.76)
- DNS: sib.swiss
- Email: no MX record returned
- SSL: Let's Encrypt, RSA 2048, expires Jan 2027
- Common Crawl link graph: rank 456,787, 4 hosts
DNS records as swept Nov 2026, certificate as seen Nov 2026, registration from the registry's RDAP service. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.cellosaurus.org | 7 |
| cellosaurus.org | 4 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Cloudflare Aug 2026
- detected Cloudflare Bot Management Aug 2026
- detected Java Aug 2026