What powers st-os.cz?
Last seen Sep 2026 · 13 technologies across 9 categories
Advertising
Microsoft Advertising
since Sep 2026
Analytics
Google Analytics
since Sep 2024
Smartlook
since Sep 2024
JavaScript frameworks
JavaScript libraries
Miscellaneous
Open Graph
since Oct 2022
Webpack
since Sep 2024
Programming languages
TypeScript
since Sep 2024
Security
HSTS
since Sep 2024
Tag managers
Google Tag Manager
since Sep 2024
Video players
YouTube
since Sep 2024
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
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.83 / 10 · ranked #1,912,513 of all domains
12 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.5 s |
| INP | 75 ms |
| CLS | 0.85 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Czech
- Weight: 6.7 MB · 182 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Email: no MX record returned
- Email security: DNSSEC signed
- Common Crawl link graph: rank 8,463,204
DNS records as swept Sep 2026. How the web is hosted
Full technology history →
Report an incorrect detection
Recent changes
- detected Microsoft Advertising Sep 2026