What powers fieldbrain.com?
Last seen Jun 2026 · 3 technologies across 3 categories
Hosting
Sakura Internet
since Aug 2022
Security
HSTS
since Apr 2026
Web servers
Nginx
since Jan 2019
Audience
- 85% phone
- 14% desktop
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
2.33 / 10 · ranked #2,816,004 of all domains
26 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.8 s |
| INP | 250 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Japanese
- Weight: 16.0 MB · 61 requests
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| www.fieldbrain.com | 3 |
| fieldbrain.com | 2 |
Full technology history →
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Recent changes
- detected HSTS Apr 2026