What powers alfachallenge.jp?
Last seen Jun 2024 · 3 technologies across 3 categories
Hosting
Sakura Internet
since Apr 2024
Video players
YouTube
since May 2021
Web servers
Nginx
since Feb 2020
Audience
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
2.32 / 10 · ranked #2,844,601 of all domains
9 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.7 s |
| INP | 275 ms |
| CLS | 0 |
| TTFB | 100 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Weight: 19.0 MB · 1,369 requests
Homepage as crawled by the HTTP Archive, Jul 2026.