What powers sab.cz?
Last seen Sep 2026 · 15 technologies across 14 categories
Analytics
Google Analytics
since Apr 2019
Font Scripts
Google Font API
since Apr 2019
JavaScript libraries
Miscellaneous
Open Graph
since Feb 2026
Operating systems
Ubuntu
since Nov 2019
Performance
Priority Hints
since Feb 2026
Programming languages
PHP
since Nov 2019
Reverse proxies
Envoy
since Jun 2026
Security
reCAPTCHA
since Feb 2026
Tag managers
Google Tag Manager
since Apr 2019
UI frameworks
Tailwind CSS
since Feb 2026
Web frameworks
Nette Framework
since Feb 2026
Web servers
Webmail
Apple iCloud Mail
since Apr 2025
AI Crawlers
robots.txt could not be read at the last check (Sep 2026), so its policy is unknown.
- robots.txt not checked
- llms.txt not checked
- ai.txt not checked
AI Crawlers
Policy unknown
Audience
- 51% desktop
- 49% phone
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.45 / 10 · ranked #2,589,503 of all domains
13 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.3 s |
| INP | 100 ms |
| CLS | 0 |
| TTFB | 1600 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Czech
- Weight: 5.1 MB · 62 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on DigitalOcean (159.223.251.203)
- DNS: forpsi.cz
- Email: mediso.cz
- Email security: no SPF record, no DMARC record, DNSSEC signed
- Common Crawl link graph: rank 11,438,944, 7 hosts
DNS records as swept Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.sab.cz | 11 |
| devizy.sab.cz | 7 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped HSTS Jul 2026
- detected Envoy Jun 2026
- dropped Lightbox Mar 2026
- dropped ZURB Foundation Mar 2026
- detected Nette Framework Feb 2026
- detected Open Graph Feb 2026
- detected Priority Hints Feb 2026
- detected reCAPTCHA Feb 2026
- detected Tailwind CSS Feb 2026