What powers 
jhk.cz?
Last seen Aug 2026 · 14 technologies across 8 categories
Analytics
CDN
JavaScript libraries
Miscellaneous
Programming languages
UI frameworks
Web servers
Webmail
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
AI Crawlers
No AI crawlers blocked
Audience
- 57% desktop
- 43% phone
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.73 / 10 · ranked #293,021 of all domains
93 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.4 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 1700 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Czech
- Weight: 1.3 MB · 45 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- South Bohemian Chamber of Commerce
- Country: Czech Republic
From Wikidata (CC0).
Infrastructure
- Hosted on INTERNET-CZ Ktis 2, 384 03 Ktis (81.2.216.67)
- DNS: forpsi.cz
- Email: Microsoft 365
- Email security: no SPF record, no DMARC record, DNSSEC signed
- SSL: Let's Encrypt, RSA 2048, expires Oct 2026
- Common Crawl link graph: rank 1,244,240, 4 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
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Recent changes
- dropped Debian Jan 2026