What powers 
hc-institute.org?
Last seen Sep 2026 · 8 technologies across 8 categories
Analytics
CDN
Font scripts
JavaScript libraries
Miscellaneous
Security
Tag managers
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 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
4.06 / 10 · ranked #529,342 of all domains
90 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.7 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Czech
- Weight: 2.3 MB · 56 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Websupport (81.95.108.34, IPv6)
- DNS: websupport.cz
- Email: Active 24
- Email security: no SPF record, no DMARC record, DNSSEC signed
- SSL: Let's Encrypt, ECDSA P256, expires Nov 2026
- Common Crawl link graph: rank 7,096,260, 2 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| hc-institute.org | 8 |
| www.hc-institute.org | 8 |
Full technology history →
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Recent changes
- dropped OpenResty Apr 2026
- dropped Lightbox Mar 2026
- dropped PHP Mar 2026
- detected Google Font API Feb 2026
- detected Google Hosted Libraries Feb 2026
- detected HTTP/3 Feb 2026
- detected OpenResty Feb 2026