What powers learned.cz?
Last seen Aug 2026 · 10 technologies across 6 categories
Analytics
CDN
JavaScript libraries
Programming languages
Web servers
Webmail
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 Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.68 / 10 · ranked #375,347 of all domains
87 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.9 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Czech (Czechia)
- Weight: 1.6 MB · 43 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Learned Society of the Czech Republic
- Founded: 1994
- Sector: higher education
- Country: Czech Republic
From Wikidata (CC0).
Infrastructure
- Hosted on ACTIVE24-AS www.active24.cz (81.95.96.134, IPv6)
- DNS: Active 24
- Email: no MX record returned, SPF names Microsoft 365
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Let's Encrypt, ECDSA P256, expires Dec 2026
- Common Crawl link graph: rank 483,930, 2 hosts
- Verified with: Google, Microsoft 365
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| learned.cz | 7 |
| www.learned.cz | 6 |
Full technology history →
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Recent changes
- dropped Cloudflare Nov 2025
- dropped Cloudflare Bot Management Nov 2025