What powers onfakt.cz?
Last seen Oct 2026 · 18 technologies across 15 categories
Analytics
CDN
Font scripts
JavaScript libraries
Load balancers
Miscellaneous
PaaS
Programming languages
Security
Tag managers
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
1.98 / 10 · ranked #3,635,408 of all domains
6 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.9 s |
| CLS | 0 |
| TTFB | 1200 ms |
Real user p75, Chrome UX Report, Oct 2026.
Page
- Language: Czech
- CDN: Amazon CloudFront
- Weight: 1.3 MB · 54 requests
- Structured data: JSON-LD, Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- onFact
From the homepage's own structured data (Oct 2026).
Infrastructure
- Hosted on Amazon Web Services (13.249.52.6)
- DNS: Amazon Route 53
- Email: Amazon SES / WorkMail
- Email security: SPF (soft fail), DMARC quarantine
- SSL: Amazon Trust Services, RSA 2048, wildcard, expires Feb 2027
- Common Crawl link graph: rank 31,657,083, 4 hosts
- Verified with: Google
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted