What powers videnska.cz?
Last seen Sep 2026 · 19 technologies across 10 categories
CDN
cdnjs
since Feb 2025
Cloudflare
since Feb 2025
jQuery CDN
since Feb 2025
jsDelivr
since Feb 2025
Unpkg
since Feb 2025
Font scripts
Typekit
since Feb 2025
JavaScript libraries
Miscellaneous
Programming languages
PHP
since Nov 2021
Security
reCAPTCHA
since Feb 2025
Tag managers
Google Tag Manager
since Feb 2025
Web frameworks
Web servers
Nginx
since Feb 2025
Webmail
Microsoft 365
since Aug 2022
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 100% phone
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.79 / 10 · ranked #4,428,908 of all domains
8 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.1 s |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Czech
- Weight: 2.2 MB · 63 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on ACTIVE24-AS www.active24.cz (81.95.99.217, IPv6)
- DNS: regzone.cz
- Email: Microsoft 365
- Email security: SPF (soft fail), no DMARC record, DNSSEC signed
- SSL: Let's Encrypt, ECDSA P256, expires Jan 2027
- Common Crawl link graph: rank 13,187,247
- Verified with: Microsoft 365
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Full technology history →
Report an incorrect detection
Recent changes
- detected HTTP/3 Sep 2026