What powers zazumi.cz?
Last seen Oct 2026 · 17 technologies across 12 categories
Analytics
Authentication
CDN
Cookie compliance
Issue trackers
JavaScript frameworks
JavaScript libraries
Miscellaneous
Performance
Programming languages
Search engines
Tag managers
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
- 72% phone
- 23% desktop
- 5% tablet
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.44 / 10 · ranked #2,609,464 of all domains
14 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.2 s |
| INP | 225 ms |
| CLS | 0.15 |
| TTFB | 1100 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Czech
- CDN: Cloudflare
- Weight: 3.6 MB · 99 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Cloudflare (104.26.2.21, IPv6)
- DNS: Cloudflare DNS
- Email: ferencik.cz
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Google Trust Services, ECDSA P256, wildcard, expires Dec 2026
- Common Crawl link graph: rank 25,079,905, 2 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Full technology history →
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Recent changes
- detected Sentry Mar 2026
- detected styled-components Mar 2026