What powers kobras.cz?
Last seen Sep 2026 · 22 technologies across 12 categories
Advertising
Analytics
CDN
Cookie compliance
Font scripts
Issue trackers
JavaScript libraries
Live chat
Programming languages
Security
Tag managers
Web servers
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
- 66% phone
- 28% desktop
- 5% tablet
Czechia
Slovakia
Croatia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.12 / 10 · ranked #1,397,084 of all domains
27 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.4 s |
| INP | 100 ms |
| CLS | 0.1 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Czech
- Weight: 1.9 MB · 35 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on CASABLANCA-AS Internet & Collocation Provider (81.0.235.17)
- DNS: web4ce.cz
- Email: web4ce.cz
- Email security: SPF (hard fail), DMARC quarantine, MTA-STS, BIMI
- SSL: Let's Encrypt, RSA 2048, expires Jan 2027
- Common Crawl link graph: rank 8,991,003, 6 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| benatky.kobras.cz | 18 |
| runlab.kobras.cz | 16 |
| kobras.cz | 10 |
| www.kobras.cz | 7 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped Prism Jul 2026
- detected Tawk.to Jun 2026
- detected Prism Feb 2026
- detected Microsoft Clarity Nov 2025