What powers rubizaidan.jp?
Last seen Oct 2026 · 29 technologies across 19 categories
Analytics
CDN
CMS
Databases
Font scripts
Hosting
JavaScript frameworks
JavaScript libraries
Miscellaneous
PaaS
Page builders
Performance
Programming languages
Tag managers
Video players
Web frameworks
Web servers
WordPress plugins
WordPress themes
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
- Oct 2026 *: Allowed (was Restricted)
- Sep 2026 *: Restricted (was Allowed)
AI Crawlers
No AI crawlers blocked
Audience
- 57% desktop
- 43% phone
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.40 / 10 · ranked #1,009,302 of all domains
27 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.7 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 1000 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 7.1 MB · 214 requests
- WordPress theme: lightning (child: lightning-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 ルビ財団
From the homepage's own structured data (Oct 2026).
Infrastructure
- Hosted on Xserver (162.43.104.31)
- DNS: Xserver
- Email: no MX record returned, SPF names Xserver
- Email security: SPF (soft fail)
- SSL: Let's Encrypt, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 1,200,082, 2 hosts
- Verified with: Google
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| rubizaidan.jp | 24 |
| rubyful.rubizaidan.jp | 13 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Priority Hints Aug 2026
- detected Twitter Emoji (Twemoji) Dec 2025