What powers 
yellz.jp?
Last seen Sep 2026 · 33 technologies across 18 categories
Advertising
Analytics
CDN
CMS
Databases
JavaScript frameworks
JavaScript libraries
Load balancers
Miscellaneous
PaaS
Performance
Programming languages
Security
Tag managers
UI frameworks
Video players
Web servers
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 86% phone
- 14% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.84 / 10 · ranked #262,866 of all domains
80 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.3 s |
| INP | 100 ms |
| CLS | 0 |
| TTFB | 700 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 10.5 MB · 115 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Golden Bears
- Founded: 1991
- Country: Japan
From Wikidata (CC0).
Infrastructure
- Hosted on Amazon Web Services (3.115.103.36)
- Email: no MX record returned
- SSL: Nijimo, Inc., RSA 2048, wildcard, expires Oct 2026
- Common Crawl link graph: rank 152,484, 2 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| yellz.jp | 27 |
| kanri.yellz.jp | 12 |
| site.yellz.jp | 11 |
Full technology history →
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Recent changes
- detected Cloudflare May 2026
- detected Cloudflare Bot Management May 2026
- detected Facebook Pixel Apr 2026
- detected Priority Hints Mar 2026
- dropped Cloudflare Nov 2025
- dropped Cloudflare Bot Management Nov 2025