What powers 
hcslezan.cz?
Last seen Sep 2026 · 17 technologies across 9 categories
Analytics
CDN
Font scripts
JavaScript libraries
Miscellaneous
Programming languages
UI frameworks
Web servers
Webmail
AI Crawlers
Blocks 13 of 33 AI crawlers we track by name in its robots.txt. Checked Oct 2026.
Training crawlers
- Applebot-Extended Blocked
- Bytespider Blocked
- CCBot Blocked
- ClaudeBot Blocked
- cohere-training-data-crawler Blocked
- Diffbot Blocked
- Google-CloudVertexBot Blocked
- Google-Extended Blocked
- GoogleOther Blocked
- GPTBot Blocked
- meta-externalagent Blocked
Search and AI assistants
- Amazonbot Blocked
- PetalBot Blocked
The other 20 AI crawlers we track are not mentioned and stay allowed by default.
- robots.txt found
- llms.txt not found
- ai.txt not found
Content Signals:
search=yes ai-train=no declared in robots.txt
- Oct 2026 googleother added to robots.txt
- Oct 2026 bytespider added to robots.txt
- Oct 2026 ccbot added to robots.txt
- Oct 2026 claude-web added to robots.txt
- Oct 2026 applebot-extended added to robots.txt
- Oct 2026 robots.txt appeared
AI Crawlers
13 of 33 AI crawlers blocked
Standards: Content Signals
Audience
- 88% phone
- 12% desktop
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.85 / 10 · ranked #694,456 of all domains
85 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.1 s |
| INP | 75 ms |
| CLS | 0.05 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Czech
- CDN: Cloudflare
- Weight: 8.1 MB · 71 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- HC Slezan Opava
- Founded: 1945
- Country: Czech Republic
From Wikidata (CC0).
Infrastructure
- Hosted on Cloudflare (104.21.77.15, IPv6)
- Email: Google Workspace
- Email security: SPF (soft fail), no DMARC record
- SSL: Google Trust Services, ECDSA P256, wildcard, expires Dec 2026
- Common Crawl link graph: rank 2,309,595, 4 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| mladez.hcslezan.cz | 16 |
| www.hcslezan.cz | 16 |
| clen.hcslezan.cz | 5 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Google Hosted Libraries Sep 2026