What powers kafe.or.kr?
Last seen Sep 2026 · 11 technologies across 6 categories
JavaScript frameworks
JavaScript graphics
Chart.js
since Dec 2021
JavaScript libraries
Programming languages
Node.js
since Jan 2023
Security
HSTS
since Nov 2023
Web servers
Apache HTTP Server
since Jun 2020
Nginx
since May 2026
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 checked
- ai.txt not checked
AI Crawlers
No AI crawlers blocked
Audience
- 100% desktop
South Korea
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.86 / 10 · ranked #4,009,820 of all domains
8 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.3 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 100 ms |
Real user p75, Chrome UX Report, Sep 2026.
Infrastructure
- Hosted on KREONET-AS-KR KISTI (134.75.115.42)
- DNS: whoisdomain.kr
- Email: kafe.or.kr
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Let's Encrypt, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 14,290,126, 9 hosts
DNS records as swept Sep 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| webinar.kafe.or.kr | 10 |
| app3.webinar.kafe.or.kr | 1 |
Full technology history →
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Recent changes
- dropped Ubuntu Jun 2026