What powers sfpi.cz?
Last seen Aug 2026 · 40 technologies across 17 categories
CMS
Databases
Font scripts
JavaScript frameworks
JavaScript libraries
Maps
Miscellaneous
Mobile frameworks
Operating systems
Page builders
Programming languages
Security
Web frameworks
Web servers
Webmail
Widgets
WordPress plugins
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
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| sfrb | #80 | 0 |
| sfrb | #66 | 0 |
| sfrb | #30 | 0 |
The site's top keywords in Google (US), with the visits each one is estimated to bring per month.
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 73% desktop
- 27% phone
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
5.35 / 10 · ranked #178,823 of all domains
125 referring domains · OpenPageRank
Search traffic
0 est. monthly organic visits (US)
3 keywords in Google's top 30
Core Web Vitals
| LCP | 0.6 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Czech
- Weight: 1.2 MB · 31 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Websupport (37.9.175.163, IPv6)
- DNS: websupport.cz
- Email: no MX record returned, SPF names Microsoft 365
- Email security: SPF (soft fail), DMARC monitor only, DNSSEC signed
- SSL: Let's Encrypt, RSA 4096, expires Nov 2026
- Common Crawl link graph: rank 2,293,736, 4 hosts
- Verified with: Apple Business, Microsoft 365
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| sfpi.cz | 31 |
| zadosti.sfpi.cz | 8 |
| portal.sfpi.cz | 7 |
Full technology history →
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Recent changes
- dropped Facebook Login Aug 2026
- dropped GSAP Aug 2026
- detected PWA Aug 2026