What powers 
udif.cz?
Last seen Sep 2026 · 36 technologies across 20 categories
Analytics
CDN
CMS
Databases
Ecommerce
Font scripts
JavaScript frameworks
JavaScript libraries
Miscellaneous
Operating systems
Performance
Photo galleries
Programming languages
Security
Tag managers
UI frameworks
Web frameworks
Web servers
Widgets
WordPress plugins
AI Crawlers
Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
- Oct 2026 llms.txt removed
AI Crawlers
No AI crawlers blocked
Audience
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.68 / 10 · ranked #774,625 of all domains
47 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.8 s |
| INP | 100 ms |
| CLS | 0 |
| TTFB | 1800 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Czech
- Weight: 1.2 MB · 110 requests
- WordPress theme: woodmart (child: woodmart-child) · all themes
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- ÚDiF - Úžasné divadlo fyziky a chemie (Úžasné divadlo fyziky on Wikidata)
- Founded: 2007
- Country: Czech Republic
- Profiles: Facebook, Instagram
From the homepage's own structured data (Sep 2026) and Wikidata (CC0).
Infrastructure
- Hosted on WEDOS (46.28.105.92)
- DNS: ignum.com
- Email: wedos.net
- Email security: SPF (soft fail), DMARC monitor only, DNSSEC signed, MTA-STS, BIMI
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 2,718,855, 3 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| udif.cz | 22 |
| eshop.udif.cz | 20 |
| www.udif.cz | 9 |
Full technology history →
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Recent changes
- detected Debian Jun 2026
- detected Facebook Pixel Nov 2025
- dropped Google Customer Reviews Nov 2025