What powers biosemantics.org?
Last seen Oct 2026 · 2 technologies across 2 categories
Operating systems
Web servers
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Nov 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
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 robots.txt, all AI crawlers allowed
Audience
- 83% desktop
- 15% phone
- 2% tablet
United States
India
Brazil
Spain
Japan
Canada
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
5.81 / 10 · ranked #127,623 of all domains
266 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.2 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 1700 ms |
Real user p75, Chrome UX Report, Oct 2026.
Page
- Language: English
- Weight: 0.1 MB · 4 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Registered Jul 2001 (25 years) via Hosting Concepts B.V. d/b/a Registrar.eu, renews Jul 2027
- Hosted on SURFNET-NL SURF B.V. (156.83.20.12)
- DNS: surfnet.nl
- Email: biosemantics.org
- Email security: SPF (hard fail), DMARC reject, DNSSEC signed, CAA
- SSL: Let's Encrypt, ECDSA P256, expires Jan 2027
- Common Crawl link graph: rank 1,884,144, 3 hosts
DNS records as swept Nov 2026, certificate as seen Nov 2026, registration from the registry's RDAP service. How the web is hosted