What powers petrof.cz?
Last seen Aug 2026 · 29 technologies across 15 categories
Advertising
Analytics
Caching
CDN
CMS
Databases
Font scripts
JavaScript libraries
Miscellaneous
Programming languages
Security
Tag managers
UI frameworks
Web servers
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 Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
- Aug 2026 robots.txt appeared
- Aug 2026 * added to robots.txt
AI Crawlers
No AI crawlers blocked
Audience
- 84% phone
- 16% desktop
Czechia
Slovakia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.51 / 10 · ranked #400,494 of all domains
59 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.3 s |
| INP | 100 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Czech
- Weight: 2.8 MB · 74 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Petrof
- Founded: 1864
- Sector: musical instrument manufacturing company
- Country: Czech Republic
From Wikidata (CC0).
Infrastructure
- Hosted on AS35236 - UVT Internet s.r.o. (109.205.76.18)
- DNS: websupport.cz
- Email: Cloudflare Email Security
- Email security: SPF (hard fail), no DMARC record, DNSSEC signed
- SSL: Let's Encrypt, ECDSA P384, expires Oct 2026
- Common Crawl link graph: rank 625,831, 3 hosts
- Verified with: Google, Microsoft 365
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| eshop.petrof.cz | 19 |
| prace.petrof.cz | 19 |
| www.petrof.cz | 17 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped Priority Hints Jan 2026
- detected Lightbox Dec 2025
- detected Bootstrap Nov 2025
- detected jQuery UI Nov 2025
- detected jsDelivr Nov 2025