What powers 
jasuteren.cz?
Last seen Jul 2026 · 11 technologies across 7 categories
Analytics
JavaScript frameworks
JavaScript libraries
Miscellaneous
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
- Aug 2026 robots.txt appeared
- Aug 2026 * added to robots.txt
AI Crawlers
No AI crawlers blocked
Audience
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.63 / 10 · ranked #801,480 of all domains
50 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.6 s |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Czech
- Weight: 4.4 MB · 28 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on INTERNET-CZ Ktis 2, 384 03 Ktis (194.182.90.144, IPv6)
- DNS: websupport.cz
- Email: Microsoft 365
- Email security: SPF (soft fail), DMARC quarantine, DNSSEC signed
- SSL: Let's Encrypt, ECDSA P384, expires Oct 2026
- Common Crawl link graph: rank 8,526,309, 3 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 |
|---|---|
| www.jasuteren.cz | 11 |
| jasuteren.cz | 10 |
Full technology history →
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Recent changes
- dropped Google Workspace Mar 2026
- detected Microsoft 365 Feb 2026
- dropped Ubuntu Dec 2025