What powers j3a.or.jp?
Last seen Jun 2026 · 6 technologies across 6 categories
Analytics
CDN
Google Hosted Libraries
since Aug 2022
Font scripts
Google Font API
since Aug 2022
JavaScript libraries
Video players
YouTube
since Apr 2026
Web servers
Apache HTTP Server
since Jul 2020
AI Crawlers
robots.txt could not be read at the last check (Sep 2026), so its policy is unknown.
- robots.txt not checked
- llms.txt not checked
- ai.txt not checked
AI Crawlers
Policy unknown
Audience
- 74% desktop
- 26% phone
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.01 / 10 · ranked #560,295 of all domains
31 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.4 s |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Weight: 2.1 MB · 117 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on PSPINC-BDC (216.230.253.86)
- DNS: alpha-mail.jp
- Email: no MX record returned
- SSL: Cybertrust Japan, RSA 2048, expires Jan 2027
- Common Crawl link graph: rank 15,706,219, 2 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| j3a.or.jp | 6 |
| www.j3a.or.jp | 6 |
Full technology history →
Report an incorrect detection
Recent changes
- detected YouTube Apr 2026