What powers sths.ed.jp?
Last seen Oct 2026 · 8 technologies across 8 categories
Hosting
Sakura Internet
since Aug 2022
JavaScript frameworks
JavaScript graphics
JavaScript libraries
Programming languages
UI frameworks
Web frameworks
CakePHP
since Aug 2021
Web servers
Nginx
since May 2019
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Oct 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 70% phone
- 30% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.63 / 10 · ranked #2,280,082 of all domains
14 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.4 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 700 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 2.6 MB · 75 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- Shizuoka Prefectural Science and Technology High School
- Founded: 2008
- Country: Japan
From Wikidata (CC0).
Infrastructure
- Hosted on Sakura Internet (219.94.189.241)
- DNS: Sakura Internet
- Email: sths.ed.jp
- Email security: SPF (soft fail), no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 10,250,646
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Full technology history →
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Recent changes
- dropped Moment.js Aug 2026