What powers udvoulisek.cz?
Last seen Oct 2026 · 9 technologies across 8 categories
Analytics
Font scripts
Google Font API
since Oct 2026
JavaScript frameworks
JavaScript libraries
Lightbox
since May 2020
Maps
Google Maps
since Dec 2022
Performance
Priority Hints
since Oct 2026
Programming languages
PHP
since May 2020
Web servers
AI Crawlers
robots.txt could not be read at the last check (Oct 2026), so its policy is unknown.
- robots.txt not checked
- llms.txt not checked
- ai.txt not checked
AI Crawlers
Policy unknown
Audience
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.11 / 10 · ranked #10,982,835 of all domains
2 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.7 s |
| INP | 200 ms |
| CLS | 0 |
| TTFB | 200 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Czech
- Weight: 1.0 MB · 13 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on MASTER-AS Czech Republic www.master.cz (85.118.134.182)
- DNS: grdns.cz
- Email: s2ep.cz
- Email security: no SPF record, no DMARC record
- Common Crawl link graph: rank 42,809,249, 2 hosts
DNS records as swept Oct 2026. How the web is hosted
Full technology history →
Report an incorrect detection
Recent changes
- detected Google Font API Oct 2026
- detected Priority Hints Oct 2026