What powers 
nhatkyzalo.vn?
Last seen Sep 2026 · 16 technologies across 7 categories
Analytics
Google Analytics
since May 2024
CDN
Google Hosted Libraries
since Sep 2023
JavaScript frameworks
React
since May 2024
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2023
Popper
since May 2024
UI frameworks
Animate.css
since May 2024
Bootstrap
since Sep 2023
Webmail
Microsoft 365
since Sep 2023
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Oct 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 95% desktop
- 5% phone
Vietnam
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.55 / 10 · ranked #838,582 of all domains
4 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.2 s |
| INP | 75 ms |
| CLS | 0.15 |
| TTFB | 100 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Weight: 2.7 MB · 33 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on VINAGAME-AS-VN VNG Corporation (49.213.95.247)
- DNS: vngdns.net
- Email: Microsoft 365
- Email security: SPF (hard fail), no DMARC record
- SSL: Let's Encrypt, RSA 2048, wildcard, expires Nov 2026
- Common Crawl link graph: rank 13,367,775, 2 hosts
- Verified with: Microsoft 365
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| oa.nhatkyzalo.vn | 13 |
| nhatkyzalo.vn | 6 |
Full technology history →
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Recent changes
- detected Slick Nov 2025