What powers deep4399.cn?
Last seen Jun 2026 · 13 technologies across 8 categories
JavaScript frameworks
JavaScript libraries
Miscellaneous
HTTP/3
since May 2026
Mobile frameworks
jQuery-pjax
since May 2026
Rich text editors
Security
HSTS
since May 2026
UI frameworks
Web servers
Nginx
since May 2026
Audience
- 100% desktop
Japan
China
United States
Countries where the site has Chrome traffic, strongest markets first.
Core Web Vitals
| LCP | 2.5 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 1100 ms |
Real user p75, Chrome UX Report, Jun 2026.