What powers zustb.cz?
Last seen Jun 2026 · 12 technologies across 9 categories
CMS
Joomla
since Nov 2021
JavaScript frameworks
JavaScript libraries
jQuery Migrate
since Aug 2022
Miscellaneous
Operating systems
Debian
since Oct 2023
Programming languages
PHP
since Nov 2021
UI frameworks
Bootstrap
since Nov 2021
Web servers
Apache Traffic Server
since Jan 2026
Webmail
Apple iCloud Mail
since Jan 2023
Audience
- 100% phone
Czechia
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
1.40 / 10 · ranked #7,483,162 of all domains
3 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.1 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Czech (Czechia)
- Weight: 2.3 MB · 44 requests
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| www.zustb.cz | 10 |
| nauky.zustb.cz | 8 |
Full technology history →
Report an incorrect detection
Recent changes
- detected HTTP/3 Jun 2026
- detected Apache Traffic Server Jan 2026
- dropped YouTube Oct 2025