What powers chuou.ed.jp?
Last seen Sep 2026 · 25 technologies across 16 categories
Affiliate programs
Analytics
CDN
CMS
Databases
Font scripts
Hosting
JavaScript libraries
Maps
Miscellaneous
Page builders
Performance
Programming languages
Video players
Web servers
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 Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.89 / 10 · ranked #3,899,904 of all domains
7 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 6.3 MB · 87 requests
- WordPress theme: cocoon-master (child: cocoon-child-master) · all themes
- Structured data: JSON-LD, Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Xserver (183.90.241.34)
- DNS: Xserver
- Email: chuou.ed.jp
- Email security: SPF (soft fail), no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Oct 2026
- Common Crawl link graph: rank 33,557,213, 2 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Full technology history →
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Recent changes
- dropped Facebook Login May 2026
- dropped Google Hosted Libraries May 2026
- dropped Lightbox May 2026
- dropped Responsive Lightbox & Gallery May 2026
- dropped Slick May 2026
- dropped SnapWidget May 2026
- dropped Twitter Emoji (Twemoji) May 2026
- detected Contact Form 7 Apr 2026
- detected core-js Apr 2026
- detected Font Awesome Apr 2026
- detected Google Font API Apr 2026
- detected jQuery CDN Apr 2026
- detected jsDelivr Apr 2026
- detected Moshimo Apr 2026
- detected Priority Hints Apr 2026
- detected Quantcast Measure Apr 2026
- detected RSS Apr 2026
- detected WordPress Block Editor Apr 2026