What powers pragaarena.cz?
Last seen Aug 2026 · 10 technologies across 9 categories
Analytics
Google Analytics
since Jan 2019
Font scripts
Google Font API
since Apr 2019
JavaScript libraries
Miscellaneous
HTTP/3
since Oct 2023
Open Graph
since Sep 2022
Security
HSTS
since Sep 2022
UI frameworks
Pure CSS
since Apr 2019
Video players
YouTube
since Jan 2019
Web servers
Nginx
since Apr 2019
Webmail
Google Workspace
since Aug 2022
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 82% phone
- 18% desktop
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.91 / 10 · ranked #3,838,269 of all domains
8 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.3 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- Weight: 1.0 MB · 43 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Racing Club 2008 v AČR
- Industry: Professional services (declares
ProfessionalService)
From the homepage's own structured data (Sep 2026).
Infrastructure
- Email: no MX record returned
- Email security: SPF (neutral)
- SSL: Let's Encrypt, ECDSA P256, expires Nov 2026
- Common Crawl link graph: rank 30,747,339, 3 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| pragaarena.cz | 9 |
| www.pragaarena.cz | 5 |