What powers 
kudan.io?
Last seen Oct 2026 · 22 technologies across 16 categories
Analytics
Caching
CDN
CMS
Cookie compliance
Databases
Font scripts
JavaScript libraries
Miscellaneous
Page builders
Performance
Programming languages
Security
Web servers
WordPress plugins
WordPress themes
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 Nov 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 76% desktop
- 24% phone
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.64 / 10 · ranked #380,785 of all domains
98 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.2 s |
| INP | 50 ms |
| CLS | 0.1 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: English (United States)
- Weight: 11.4 MB · 78 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.
Infrastructure
- Hosted on Xserver (85.131.210.34)
- DNS: xbiz.ne.jp
- 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 2,928,395, 3 hosts
DNS records as swept Nov 2026, certificate as seen Nov 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.kudan.io | 20 |
| ja.kudan.io | 7 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Contact Form 7 Sep 2026
- dropped All in One SEO Jun 2026
- dropped Contact Form 7 Jun 2026
- dropped core-js Jun 2026
- dropped Google Analytics Jun 2026
- dropped Google Hosted Libraries Jun 2026
- dropped Leadfeeder Jun 2026
- dropped Really Simple SSL & Security Jun 2026
- dropped reCAPTCHA Jun 2026
- detected Clipboard.js May 2026
- detected Google Font API May 2026
- detected Lightning May 2026
- detected Nginx May 2026
- detected Priority Hints May 2026
- detected RSS May 2026
- detected Swiper May 2026
- detected Twitter Emoji (Twemoji) May 2026
- detected WordPress Block Editor May 2026