What powers 
jcy.jp?
Last seen Sep 2026 · 26 technologies across 16 categories
Analytics
Caching
CMS
Databases
Font scripts
JavaScript libraries
Miscellaneous
Operating systems
Performance
Programming languages
Security
UI frameworks
Web servers
Webmail
Widgets
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
- Oct 2026 llms.txt removed
AI Crawlers
No AI crawlers blocked
Audience
- 78% phone
- 22% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.45 / 10 · ranked #410,200 of all domains
67 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.3 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 1.9 MB · 78 requests
- WordPress theme: social-activism (child: social-activism-child) · all themes
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- 一般財団法人日本クラブユースサッカー連盟
From the homepage's own structured data (Oct 2026).
Infrastructure
- Hosted on GMOOSK-NET GMO Internet Group, Inc. (160.251.140.138, IPv6)
- DNS: conoha-dns.com
- Email: Microsoft 365
- Email security: SPF (hard fail), DMARC monitor only
- SSL: Let's Encrypt, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 12,105,514, 2 hosts
- Verified with: Microsoft 365
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted