What powers a1r.cz?
Last seen Jun 2026 · 12 technologies across 9 categories
Analytics
Google Analytics
since Feb 2020
Microsoft Clarity
since Jun 2024
JavaScript libraries
Live chat
Miscellaneous
Open Graph
since Sep 2022
PWA
since Aug 2022
Operating systems
Debian
since Feb 2020
Programming languages
PHP
since Aug 2021
Security
reCAPTCHA
since Apr 2024
Tag managers
Google Tag Manager
since Feb 2020
Web servers
Audience
- 95% phone
- 5% tablet
Czechia
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
1.46 / 10 · ranked #6,861,708 of all domains
3 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.1 s |
| INP | 125 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English
- Weight: 6.6 MB · 112 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| a1r.cz | 12 |
| www.a1r.cz | 12 |
Full technology history →
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Recent changes
- dropped core-js Dec 2025
- dropped Facebook Pixel Dec 2025
- detected Smartsupp Oct 2025