What powers sdm.or.kr?
Last seen Jun 2026 · 20 technologies across 8 categories
Analytics
CDN
Cloudflare
since Aug 2025
Google Hosted Libraries
since Jul 2023
JavaScript libraries
Miscellaneous
Kakao
since Feb 2022
Open Graph
since Sep 2022
Swiper Slider
since Nov 2021
SyntaxHighlighter
since Oct 2025
Operating systems
Windows Server
since Oct 2019
Programming languages
Java
since Nov 2021
Security
HSTS
since Jun 2023
Web servers
Apache HTTP Server
since Oct 2025
Audience
- 62% desktop
- 39% phone
South Korea
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
2.44 / 10 · ranked #2,596,118 of all domains
10 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.6 s |
| INP | 50 ms |
| CLS | 0.1 |
| TTFB | 1200 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Korean
- Weight: 21.4 MB · 98 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| m.sdm.or.kr | 10 |
| ebook.sdm.or.kr | 9 |
| lib.sdm.or.kr | 9 |
| archive.sdm.or.kr | 8 |
| sdm.or.kr | 5 |
| search.sdm.or.kr | 5 |
| www.sdm.or.kr | 5 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped Microsoft ASP.NET Dec 2025
- detected Apache HTTP Server Oct 2025
- detected jQuery UI Oct 2025
- detected SyntaxHighlighter Oct 2025
- detected XRegExp Oct 2025
- detected Cloudflare Aug 2025