What powers ck1.edu.vn?
Last seen Jun 2026 · 24 technologies across 14 categories
Authentication
Facebook Login
since May 2025
CDN
Google Hosted Libraries
since May 2025
JavaScript frameworks
React
since Nov 2023
JavaScript libraries
LMS
Canvas LMS
since Nov 2023
Maps
Google Maps
since May 2025
Miscellaneous
Open Graph
since May 2025
Operating systems
Ubuntu
since Feb 2025
Windows Server
since May 2025
Programming languages
Ruby
since Nov 2023
Rich text editors
Security
HSTS
since Nov 2023
Video players
Web frameworks
Ruby on Rails
since Nov 2023
Web servers
Audience
Vietnam
Countries where the site has Chrome traffic, strongest markets first.
Core Web Vitals
| LCP | 0.9 s |
| INP | 125 ms |
| CLS | 0.05 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Vietnamese
- Weight: 19.6 MB · 62 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| e.ck1.edu.vn | 14 |
| ck1.edu.vn | 11 |