What powers ssi.cz?
Last seen Oct 2026 · 27 technologies across 17 categories
Analytics
Google Analytics
since Jan 2019
Linkedin Insight Tag
since Jun 2023
Microsoft Clarity
since Mar 2025
CDN
Cloudflare
since Jun 2025
CMS
WordPress
since Jan 2019
Cookie compliance
Cookie Script
since Jan 2022
Databases
MySQL
since Jan 2019
Font scripts
Google Font API
since Jun 2026
JavaScript libraries
Slick
since Apr 2023
Maps
Google Maps
since Apr 2023
Miscellaneous
Open Graph
since Sep 2022
Programming languages
PHP
since Jan 2019
Security
Cloudflare Bot Management
since Jun 2025
reCAPTCHA
since Dec 2019
Tag managers
Google Tag Manager
since Jan 2019
UI frameworks
Web frameworks
Web servers
Apache HTTP Server
since Jun 2023
Nginx
since Jan 2019
Webmail
Microsoft 365
since Feb 2023
WordPress plugins
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 81% phone
- 19% desktop
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.93 / 10 · ranked #1,717,256 of all domains
17 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.5 s |
| INP | 175 ms |
| CLS | 0 |
| TTFB | 1500 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Weight: 4.6 MB · 99 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on SUPERNETWORK _ (37.235.104.224)
- DNS: websupport.cz
- Email: Microsoft 365
- Email security: SPF (soft fail), DMARC quarantine, DNSSEC signed
- SSL: Let's Encrypt, ECDSA P256, expires Dec 2026
- Common Crawl link graph: rank 14,931,841
- Verified with: Microsoft 365
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.ssi.cz | 24 |
| skoleni.ssi.cz | 7 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped Autoptimize Jul 2026
- detected Slick Jun 2026