What powers 
vaillant.cz?
Last seen Oct 2026 · 22 technologies across 14 categories
Analytics
Smartlook
since Jan 2025
CDN
JavaScript frameworks
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
PWA
since Oct 2023
Operating systems
Ubuntu
since Aug 2024
PaaS
Amazon Web Services
since Jan 2025
Performance
Priority Hints
since Oct 2023
Programming languages
Java
since Aug 2021
Security
HSTS
since Sep 2022
Video players
Web frameworks
JavaServer Faces
since Jul 2022
Web servers
Webmail
Microsoft 365
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 Nov 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
- Oct 2026 * removed from robots.txt
AI Crawlers
No AI crawlers blocked
Audience
- 66% phone
- 30% desktop
- 4% tablet
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.13 / 10 · ranked #487,943 of all domains
33 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.5 s |
| INP | 125 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Oct 2026.
Page
- Language: Czech (Czechia)
- Weight: 4.8 MB · 40 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Registered May 1997 (29 years) via Webglobe, s.r.o., renews Oct 2027
- Hosted on Microsoft (52.178.106.206)
- DNS: inecnet.cz
- Email: Microsoft 365
- Email security: SPF (hard fail), DMARC reject, CAA
- SSL: GlobalSign, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 14,236,173, 7 hosts
- Verified with: Brevo, GlobalSign, Google, Microsoft 365
DNS records as swept Nov 2026, certificate as seen Nov 2026, registration from the registry's RDAP service. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| downloads.vaillant.cz | 10 |
| club.vaillant.cz | 9 |
| vaillant.cz | 9 |
| www.vaillant.cz | 9 |