What powers kudan.ed.jp?
Last seen Oct 2026 · 14 technologies across 11 categories
CDN
Font scripts
JavaScript frameworks
JavaScript libraries
Miscellaneous
PaaS
Programming languages
Security
UI frameworks
Web frameworks
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
- Sep 2026 robots.txt appeared
- Sep 2026 * added to robots.txt
AI Crawlers
No AI crawlers blocked
Audience
- 79% phone
- 21% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.40 / 10 · ranked #1,010,972 of all domains
34 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.5 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 1900 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- CDN: Amazon CloudFront
- Weight: 12.6 MB · 107 requests
- Structured data: Microdata
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- Chiyoda Ward Kudan Secondary School
- Founded: 2006
- Country: Japan
From Wikidata (CC0).
Infrastructure
- Hosted on INFOSPHERE NTT PC Communications, Inc. (119.245.181.38)
- DNS: customer.ne.jp
- Email: Google Workspace
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Amazon Trust Services, RSA 2048, expires Feb 2027
- Common Crawl link graph: rank 667,218, 2 hosts
- Verified with: Google
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.kudan.ed.jp | 13 |
| kudan.ed.jp | 1 |
Full technology history →
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