What powers sejf.cz?
Last seen Aug 2026 · 25 technologies across 15 categories
Advertising
Microsoft Advertising
since Oct 2024
Analytics
Google Analytics
since Dec 2023
CMS
Joomla
since Mar 2020
Cookie compliance
Font scripts
Google Font API
since Mar 2020
JavaScript frameworks
JavaScript libraries
Maps
Google Maps
since Mar 2020
Miscellaneous
Operating systems
Programming languages
Security
reCAPTCHA
since Oct 2023
UI frameworks
Bootstrap
since Mar 2020
Tailwind CSS
since Oct 2023
Web server extensions
Web servers
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Sep 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 100% phone
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.82 / 10 · ranked #705,213 of all domains
25 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2 s |
| INP | 100 ms |
| CLS | 0.35 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- Weight: 2.0 MB · 81 requests
- Structured data: JSON-LD, OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on O2-CZECH-REPUBLIC (194.228.3.162)
- Email: globdata.cz
- Email security: no SPF record, no DMARC record, DNSSEC signed
- SSL: Let's Encrypt, RSA 2048, expires Oct 2026
- Common Crawl link graph: rank 238,413, 5 hosts
DNS records as swept Aug 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| old.sejf.cz | 13 |
| www.sejf.cz | 13 |