What powers cedubook.com?
Last seen Aug 2026 · 22 technologies across 12 categories
Analytics
Google Analytics
since May 2019
CDN
Font scripts
Google Font API
since Dec 2025
JavaScript frameworks
Next.js App Router
since Nov 2025
React
since Nov 2025
JavaScript graphics
Chart.js
since May 2022
JavaScript libraries
Miscellaneous
Operating systems
Ubuntu
since May 2022
PaaS
Amazon Web Services
since Nov 2025
Performance
Priority Hints
since Nov 2025
Programming languages
Node.js
since Nov 2025
Web servers
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
- 67% desktop
- 27% phone
- 6% tablet
South Korea
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.28 / 10 · ranked #8,885,420 of all domains
9 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.3 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Korean
- Weight: 18.6 MB · 155 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Aug 2026.
Subdomains
| Host | Techs |
|---|---|
| cedubook.com | 15 |
| www.cedubook.com | 15 |
| rvt7.cedubook.com | 10 |
Full technology history →
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Recent changes
- dropped Apache HTTP Server Apr 2026
- dropped FancyBox Apr 2026
- dropped Google Remarketing Tag Apr 2026
- dropped Google Tag Manager Apr 2026
- dropped OpenSSL Apr 2026
- dropped PHP Apr 2026
- dropped Slick Apr 2026
- dropped UNIX Apr 2026
- dropped Java Mar 2026
- dropped Amazon ALB Jan 2026
- detected Java Jan 2026
- detected Google Font API Dec 2025