What powers 
zapa.cz?
Last seen Aug 2026 · 13 technologies across 7 categories
CDN
jQuery CDN
since Apr 2024
jsDelivr
since Apr 2024
CMS
JavaScript frameworks
GSAP
since May 2022
JavaScript libraries
Slick
since Apr 2024
Operating systems
Debian
since Feb 2020
Programming languages
PHP
since Feb 2020
Web servers
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
- Sep 2026 *: Allowed (was Restricted)
AI Crawlers
No AI crawlers blocked
Audience
- 71% phone
- 29% desktop
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.77 / 10 · ranked #730,066 of all domains
38 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.3 s |
| INP | 75 ms |
| CLS | 0.05 |
| TTFB | 700 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Czech (Czechia)
- CDN: Amazon CloudFront
- Weight: 8.8 MB · 90 requests
- Structured data: JSON-LD, Microdata, OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Buzzi
- Founded: 1907
- Industry: News and media (declares
NewsArticle) - Sector: building material
- Country: Italy
From the homepage's own structured data (Sep 2026) and Wikidata (CC0).
Infrastructure
- Hosted on Amazon Web Services (63.32.79.110, IPv6)
- DNS: udag.de
- Email: Mimecast
- Email security: SPF (hard fail), DMARC reject
- SSL: Amazon Trust Services, RSA 2048, expires Mar 2027
- Common Crawl link graph: rank 13,709,338, 2 hosts
- Verified with: Microsoft 365
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted