What powers 
rejstriksportu.cz?
Last seen Sep 2026 · 19 technologies across 11 categories
Font scripts
Font Awesome
since Jun 2021
JavaScript frameworks
JavaScript libraries
metisMenu
since Jul 2022
SweetAlert2
since Nov 2020
Miscellaneous
Operating systems
Windows Server
since Sep 2020
Programming languages
TypeScript
since Jun 2021
Security
HSTS
since Sep 2022
UI frameworks
Web frameworks
Microsoft ASP.NET
since Sep 2020
Web servers
Webmail
Microsoft 365
since Aug 2022
AI Crawlers
robots.txt could not be read at the last check (Oct 2026), so its policy is unknown.
- robots.txt not checked
- llms.txt not checked
- ai.txt not checked
AI Crawlers
Policy unknown
Audience
- 86% desktop
- 14% phone
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.54 / 10 · ranked #852,193 of all domains
29 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.7 s |
| INP | 175 ms |
| CLS | 0.05 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Czech
- Weight: 2.4 MB · 22 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Microsoft (4.210.153.175)
- DNS: websupport.cz
- Email: Microsoft 365
- Email security: SPF (hard fail), DMARC quarantine, DNSSEC signed
- SSL: DigiCert, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 7,905,092, 2 hosts
- Verified with: Microsoft 365
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| rejstriksportu.cz | 15 |
| www.rejstriksportu.cz | 12 |