What powers sez-cz.cz?
Last seen Sep 2026 · 25 technologies across 14 categories
Analytics
CDN
Font scripts
JavaScript libraries
Live chat
Miscellaneous
Operating systems
Programming languages
Security
Tag managers
UI frameworks
Video players
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 Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 73% desktop
- 27% phone
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.24 / 10 · ranked #3,015,754 of all domains
12 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.4 s |
| INP | 75 ms |
| CLS | 0.15 |
| TTFB | 900 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Czech
- Weight: 5.2 MB · 151 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on WEDOS (46.28.111.150)
- DNS: websupport.cz
- Email: Google Workspace
- Email security: SPF (hard fail), no DMARC record, DNSSEC signed
- SSL: Let's Encrypt, RSA 4096, expires Dec 2026
- Common Crawl link graph: rank 30,964,428, 3 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.sez-cz.cz | 17 |
| eshop.sez-cz.cz | 14 |
Full technology history →
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Recent changes
- dropped Facebook Login Sep 2026
- detected DataTables Aug 2026
- detected Debian Aug 2026
- detected Flickity Aug 2026
- detected Fresco Aug 2026
- detected Google Font API Aug 2026
- detected HSTS Aug 2026
- detected jsDelivr Aug 2026
- detected Lodash Aug 2026
- detected Select2 Aug 2026
- detected Swiper Aug 2026