What powers hrou.cz?
Last seen Sep 2026 · 12 technologies across 9 categories
Analytics
Google Analytics
since Aug 2018
CDN
JavaScript graphics
JavaScript libraries
Miscellaneous
HTTP/3
since May 2026
Programming languages
PHP
since Aug 2018
Video players
YouTube
since Dec 2018
Web frameworks
CodeIgniter
since Sep 2021
Web servers
Nginx
since Aug 2018
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Oct 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 52% desktop
- 31% phone
- 17% tablet
Czechia
Slovakia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.39 / 10 · ranked #1,018,501 of all domains
26 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.5 s |
| INP | 125 ms |
| CLS | 0.05 |
| TTFB | 100 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Weight: 0.4 MB · 17 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on IGNUM-AS Czech Republic (62.109.155.19, IPv6)
- DNS: savana.cz
- Email: savana.cz
- Email security: no SPF record, no DMARC record
- SSL: Let's Encrypt, RSA 2048, wildcard, expires Oct 2026
- Common Crawl link graph: rank 13,795,004, 6 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| matematika.hrou.cz | 12 |
| cestina.hrou.cz | 10 |
Full technology history →
Report an incorrect detection
Recent changes
- detected HTTP/3 May 2026
- dropped Apache HTTP Server Dec 2025