What powers severskecentrum.cz?
Last seen Sep 2026 · 5 technologies across 5 categories
CMS
Font scripts
Google Font API
since Nov 2022
JavaScript libraries
Miscellaneous
Open Graph
since Nov 2022
Programming languages
PHP
since Nov 2022
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
AI Crawlers
No AI crawlers blocked
Audience
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
0.85 / 10 · ranked #15,393,746 of all domains
1 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.7 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Czech
- Weight: 0.8 MB · 22 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Amazon Web Services (3.73.27.108)
- Email: Seznam Email
- Email security: SPF (neutral), DMARC monitor only, DNSSEC signed
- SSL: Let's Encrypt, RSA 4096, expires Nov 2026
- Common Crawl link graph: rank 40,009,520
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted