What powers 
jsbs.gr.jp?
Last seen Sep 2026 · 16 technologies across 12 categories
CMS
Databases
MySQL
since Oct 2025
Font scripts
Twitter Emoji (Twemoji)
since Jan 2026
Hosting
Sakura Internet
since Aug 2022
JavaScript libraries
Miscellaneous
RSS
since Oct 2025
Page builders
WordPress Site Editor
since Oct 2025
Performance
Priority Hints
since Jan 2026
Programming languages
UI frameworks
Web servers
Nginx
since Aug 2022
WordPress plugins
AI Crawlers
Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.63 / 10 · ranked #798,511 of all domains
18 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.1 s |
| CLS | 0.25 |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 2.9 MB · 46 requests
- WordPress theme: fse-coaching-institute · all themes
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Sakura Internet (163.43.87.232, IPv6)
- DNS: Sakura Internet
- Email: jsbs.gr.jp
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 10,213,541, 2 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| jsbs.gr.jp | 16 |
| www2.jsbs.gr.jp | 2 |