What powers 
swietelsky.cz?
Last seen Aug 2026 · 10 technologies across 8 categories
Advertising
JavaScript frameworks
JavaScript libraries
Miscellaneous
Performance
Security
Web frameworks
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
- 62% phone
- 38% desktop
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.75 / 10 · ranked #277,458 of all domains
71 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.9 s |
| INP | 100 ms |
| CLS | 0 |
| TTFB | 200 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Czech
- Weight: 5.1 MB · 70 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on IPAX-AS (37.252.186.121)
- Email: no MX record returned
- Email security: DNSSEC signed
- Common Crawl link graph: rank 10,656,020, 2 hosts
DNS records as swept Sep 2026. How the web is hosted
Full technology history →
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Recent changes
- dropped Chart.js Jun 2026
- dropped jQuery Jun 2026
- dropped Lightbox Jun 2026
- detected core-js May 2026
- detected GSAP May 2026
- detected Microsoft ASP.NET May 2026
- detected Priority Hints May 2026
- detected Svelte May 2026