What powers 
stredniskoly.cz?
Last seen Oct 2026 · 5 technologies across 5 categories
Analytics
JavaScript libraries
Miscellaneous
Programming languages
Web servers
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 Nov 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 78% phone
- 18% desktop
- 4% tablet
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.76 / 10 · ranked #272,080 of all domains
73 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.5 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Czech (Czechia)
- Weight: 0.2 MB · 18 requests
- Structured data: JSON-LD, OpenGraph
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Registered May 2002 (24 years) via INTERNET CZ, a.s., renews May 2031
- Hosted on Blindspot PRO-ZETA a.s. (91.239.201.12, IPv6)
- DNS: thinline.cz
- Email: thinline.cz
- Email security: SPF (hard fail), no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 1,315,009, 3 hosts
- Verified with: Google
DNS records as swept Nov 2026, certificate as seen Nov 2026, registration from the registry's RDAP service. How the web is hosted