What powers 
premier.cz?
Last seen Oct 2026 · 32 technologies across 18 categories
Analytics
CDN
CMS
Cookie compliance
Databases
Font scripts
JavaScript frameworks
JavaScript libraries
Miscellaneous
Operating systems
Performance
Programming languages
Security
Web frameworks
Web servers
Widgets
Wikis
WordPress plugins
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 Nov 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 78% desktop
- 22% phone
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.51 / 10 · ranked #883,639 of all domains
29 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.9 s |
| INP | 25 ms |
| CLS | 0 |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Czech
- Weight: 4.6 MB · 78 requests
- WordPress theme: flatsome (child: flatsome-child) · all themes
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on CASABLANCA-AS Internet & Collocation Provider (82.208.41.147, IPv6)
- Email: premier-system.cz
- Email security: SPF (soft fail), DMARC reject, DNSSEC signed
- SSL: Let's Encrypt, RSA 2048, wildcard, expires Jan 2027
- Common Crawl link graph: rank 8,793,642, 8 hosts
- Verified with: Google, Microsoft 365
DNS records as swept Nov 2026, certificate as seen Nov 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.premier.cz | 23 |
| aspnet.premier.cz | 10 |
| manual.premier.cz | 9 |
| air.premier.cz | 6 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped reCAPTCHA Sep 2026
- detected Cloudflare Turnstile Aug 2026
- detected Twitter Emoji (Twemoji) Dec 2025