What powers semafor.cz?
Last seen Oct 2026 · 17 technologies across 12 categories
Authentication
Facebook Login
since Dec 2024
CDN
jQuery CDN
since Feb 2022
Ecommerce
Shoptet
since Dec 2024
Font scripts
Google Font API
since Jan 2019
JavaScript libraries
Miscellaneous
Open Graph
since Dec 2024
Operating systems
Windows Server
since Apr 2020
Performance
Priority Hints
since Apr 2025
Programming languages
PHP
since Jan 2019
UI frameworks
Web frameworks
Nette Framework
since Jan 2019
Web servers
AI Crawlers
robots.txt could not be read at the last check (Nov 2026), so its policy is unknown.
- robots.txt not checked
- llms.txt not found
- ai.txt not found
AI Crawlers
Policy unknown
Audience
- 73% phone
- 24% desktop
- 3% tablet
Czechia
Slovakia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.59 / 10 · ranked #821,941 of all domains
48 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.3 s |
| INP | 100 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Czech
- Weight: 3.6 MB · 39 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- Semafor
- Founded: 1959
- Sector: creative industries
- Country: Czech Republic
From Wikidata (CC0).
Infrastructure
- Hosted on INTERNET-CZ INTERNET CZ, a.s. (81.2.233.153)
- DNS: wedos.com
- Email: sbs-servis.cz
- Email security: SPF (soft fail), no DMARC record, DNSSEC signed
- SSL: Let's Encrypt, ECDSA P256, expires Dec 2026
- Common Crawl link graph: rank 767,558, 4 hosts
DNS records as swept Nov 2026, certificate as seen Nov 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| eshop.semafor.cz | 9 |
| www.semafor.cz | 8 |
| vstupenky.semafor.cz | 4 |