What powers sjsi.org?
Last seen Sep 2026 · 27 technologies across 16 categories
Analytics
Google Analytics
since Jun 2018
CDN
Google Hosted Libraries
since Feb 2022
CMS
WordPress
since Oct 2017
Databases
MySQL
since Jun 2018
Font scripts
Google Font API
since Oct 2017
Twitter Emoji (Twemoji)
since Jun 2018
JavaScript Libraries
Miscellaneous
Open Graph
since Sep 2022
Performance
Priority Hints
since Jan 2024
Programming languages
PHP
since Jun 2018
Security
UI frameworks
Web frameworks
Microsoft ASP.NET
since Oct 2021
Web servers
Kestrel
since Oct 2021
Webmail
Google Workspace
since Aug 2022
Widgets
Facebook
since Jun 2018
WordPress plugins
ExactMetrics
since Feb 2022
WP Fastest Cache
since Feb 2022
AI Crawlers
robots.txt could not be read at the last check (Sep 2026), so its policy is unknown.
- robots.txt not checked
- llms.txt not checked
- ai.txt not checked
AI Crawlers
Policy unknown
Audience
- 64% desktop
- 36% phone
Poland
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.09 / 10 · ranked #1,438,641 of all domains
34 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.3 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 900 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Polish (Poland)
- Weight: 1.4 MB · 66 requests
- WordPress theme: sjsi · all themes
- Structured data: JSON-LD, Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on NETARTGROUP (77.55.129.177)
- Email: no MX record returned, SPF names Google Workspace
- Email security: SPF (soft fail), DMARC monitor only, DNSSEC signed, CAA
- SSL: nazwa.pl, ECDSA P384, wildcard, expires Oct 2026
- Common Crawl link graph: rank 858,521, 10 hosts
- Verified with: Google, Microsoft 365
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| sjsi.org | 21 |
| www.sjsi.org | 11 |
| exam-rejestracja.sjsi.org | 7 |
| konferencje.sjsi.org | 7 |