What powers fsel.vn?
Last seen Aug 2026 · 24 technologies across 15 categories
Analytics
Microsoft Clarity
since Aug 2026
CDN
Cloudflare
since Jan 2024
jsDelivr
since Aug 2026
Font scripts
Google Font API
since Jan 2024
JavaScript frameworks
JavaScript graphics
Maps
Google Maps
since Feb 2024
Miscellaneous
Open Graph
since Jan 2024
Webpack
since Aug 2026
Performance
Priority Hints
since Aug 2026
Programming languages
Node.js
since Feb 2024
Security
Cloudflare Turnstile
since Aug 2026
HSTS
since Jan 2024
Tag managers
Google Tag Manager
since Aug 2026
UI frameworks
Video players
YouTube
since Aug 2026
Web servers
Webmail
Google Workspace
since Apr 2024
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Sep 2026. A recent check saw a policy file missing; awaiting confirmation.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 86% desktop
- 14% phone
Vietnam
Japan
Singapore
Hong Kong SAR China
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
0.74 / 10 · ranked #18,234,889 of all domains
2 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.5 s |
| INP | 150 ms |
| CLS | 0.05 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- Weight: 4.8 MB · 105 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Subdomains
| Host | Techs |
|---|---|
| thangtuhoctoanquoc.fsel.vn | 18 |
| www.fsel.vn | 9 |
| muahetuhoc.fsel.vn | 8 |
| vuoncaouocmo.fsel.vn | 7 |