What powers soso.cz?
Last seen Sep 2026 · 21 technologies across 11 categories
Analytics
Font Scripts
Google Font API
since Mar 2020
JavaScript Libraries
Miscellaneous
Operating Systems
Windows Server
since Nov 2022
Programming languages
PHP
since Mar 2020
Security
HSTS
since Oct 2022
UI frameworks
Web frameworks
Microsoft ASP.NET
since Nov 2022
Web Servers
Webmail
Microsoft 365
since Aug 2022
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 Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.73 / 10 · ranked #4,789,538 of all domains
7 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.5 s |
| INP | 100 ms |
| CLS | 0 |
| TTFB | 200 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Czech
- Weight: 0.4 MB · 23 requests
- Structured data: JSON-LD, OpenGraph
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on WEB4U (81.91.84.24)
- DNS: web4u.cz
- Email: Microsoft 365
- Email security: SPF (hard fail), no DMARC record, DNSSEC signed
- SSL: Let's Encrypt, RSA 2048, expires Jan 2027
- Common Crawl link graph: rank 31,713,727, 5 hosts
- Verified with: Microsoft 365
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| soso.cz | 14 |
| www.soso.cz | 13 |
| bakalari.soso.cz | 4 |