What powers sam-jeong.or.kr?
Last seen Sep 2026 · 16 technologies across 9 categories
Analytics
CDN
cdnjs
since Jun 2023
Cloudflare
since Jun 2023
JavaScript libraries
Miscellaneous
Operating systems
CentOS
since Jul 2025
Programming languages
Java
since Feb 2020
Web server extensions
Web servers
Widgets
SnapWidget
since Jul 2025
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 Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 55% desktop
- 45% phone
South Korea
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.24 / 10 · ranked #9,398,873 of all domains
5 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.9 s |
| INP | 50 ms |
| CLS | 0.05 |
| TTFB | 200 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Weight: 10.2 MB · 196 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on SK Broadband (211.110.140.59)
- DNS: uhost.co.kr
- Email: sam-jeong.or.kr
- Email security: SPF (hard fail), no DMARC record
- SSL: GlobalSign, RSA 2048, expires Jan 2027
- Common Crawl link graph: rank 26,211,687, 2 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted