What powers vzvrent.cz?
Last seen Oct 2026 · 18 technologies across 14 categories
Advertising
Microsoft Advertising
since Jun 2023
Analytics
Font scripts
Google Font API
since May 2021
JavaScript libraries
Live chat
Miscellaneous
Open Graph
since Sep 2022
Operating systems
Ubuntu
since Jun 2020
Programming languages
PHP
since Jun 2020
Security
reCAPTCHA
since Mar 2023
Tag managers
Google Tag Manager
since Jun 2020
UI frameworks
Bootstrap
since Mar 2023
Web servers
Webmail
Microsoft 365
since Aug 2022
Widgets
Elfsight
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
- 79% phone
- 21% desktop
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.68 / 10 · ranked #5,097,848 of all domains
5 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.4 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Weight: 24.9 MB · 262 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Cloudflare (104.21.8.209, IPv6)
- DNS: Cloudflare DNS
- Email: Microsoft 365
- Email security: SPF (hard fail), DMARC monitor only
- Common Crawl link graph: rank 284,205
- Verified with: Google, Microsoft 365
DNS records as swept Oct 2026. How the web is hosted