What powers zcheckerviet.vip?
Last seen Oct 2026 · 15 technologies across 10 categories
Analytics
Cloudflare Browser Insights
since Oct 2026
Google Analytics
since Oct 2026
CDN
Cloudflare
since Oct 2026
Google Hosted Libraries
since Oct 2026
Databases
MySQL
since Oct 2026
JavaScript frameworks
JavaScript libraries
Message boards
XenForo
since Oct 2026
Miscellaneous
Operating systems
CentOS
since Oct 2026
Programming languages
PHP
since Oct 2026
Web servers
Centminmod
since Oct 2026
Nginx
since Oct 2026
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 Nov 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 95% phone
- 5% desktop
Vietnam
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Core Web Vitals
| LCP | 0.6 s |
| INP | 100 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Oct 2026.
Page
- Language: Vietnamese (Vietnam)
- CDN: Cloudflare
- Weight: 7.3 MB · 121 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Cloudflare (104.21.28.149)
- DNS: Cloudflare DNS
- Email: Namecheap Private Email
- Email security: SPF (soft fail), no DMARC record
- SSL: Let's Encrypt, ECDSA P256, wildcard, expires Jan 2027
DNS records as swept Nov 2026, certificate as seen Nov 2026. How the web is hosted