What powers happymath.edu.vn?
Last seen Oct 2026 · 21 technologies across 10 categories
Analytics
CDN
Font scripts
JavaScript frameworks
JavaScript libraries
Miscellaneous
Operating systems
UI frameworks
Web frameworks
Web servers
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
Vietnam
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
0.29 / 10 · ranked #52,700,690 of all domains
0 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.8 s |
| CLS | 0.05 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: English
- Weight: 15.1 MB · 49 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on EZTECH-VN EZ TECHNOLOGY COMPANY LIMITED (103.152.164.21)
- DNS: tenten.vn
- Email: Google Workspace
- Email security: SPF (soft fail), no DMARC record
- SSL: Let's Encrypt, ECDSA P256, expires Dec 2026
- Common Crawl link graph: rank 119,493,709
- Verified with: Google
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Full technology history →
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Recent changes
- detected Flowbite Oct 2026
- detected Google Analytics Oct 2026
- detected jsDelivr Oct 2026
- detected Nginx Oct 2026
- detected Tailwind CSS Oct 2026
- detected Ubuntu Oct 2026
- dropped Font Awesome Jan 2026
- dropped jQuery CDN Jan 2026
- detected Animate.css Dec 2025
- detected Isotope Dec 2025
- detected Modernizr Dec 2025