What powers tools-bu.cz?
Last seen Oct 2026 · 23 technologies across 15 categories
Analytics
CDN
Cookie compliance
Ecommerce
Font scripts
JavaScript libraries
Miscellaneous
Operating systems
Performance
Programming languages
Security
UI frameworks
Web frameworks
Web servers
Widgets
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
AI Crawlers
No AI crawlers blocked
Audience
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.63 / 10 · ranked #5,440,058 of all domains
4 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.1 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Czech
- Weight: 7.0 MB · 48 requests
- Structured data: Microdata, OpenGraph
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Linode (Akamai) (172.104.148.129)
- DNS: websupport.cz
- Email: tools-bu.cz
- Email security: SPF (soft fail), no DMARC record, DNSSEC signed
- SSL: Let's Encrypt, RSA 2048, expires Jan 2027
- Common Crawl link graph: rank 25,780,605, 2 hosts
- Verified with: Microsoft 365
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.tools-bu.cz | 15 |
| tools-bu.cz | 14 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Debian Jun 2026