What powers yamamurakai.com?
Last seen Aug 2026 · 4 technologies across 4 categories
CDN
Google Hosted Libraries
since Feb 2022
Hosting
Sakura Internet
since Aug 2022
JavaScript libraries
Web servers
Nginx
since Mar 2020
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Sep 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
0.63 / 10 · ranked #21,386,034 of all domains
4 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.8 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- Weight: 0.7 MB · 55 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Sakura Internet (59.106.171.98, IPv6)
- DNS: Sakura Internet
- Email: yamamurakai.com
- Email security: SPF (soft fail), DMARC quarantine
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 37,066,629
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted