What powers his21.co.kr?
Last seen Jun 2026 · 31 technologies across 14 categories
Analytics
Google Analytics
since Aug 2022
Naver Analytics
since Aug 2022
CDN
CMS
Tistory
since Nov 2023
Issue trackers
Sentry
since Dec 2024
JavaScript frameworks
JavaScript libraries
Miscellaneous
Operating systems
Windows Server
since Aug 2022
Programming languages
Java
since Aug 2022
Security
Cloudflare Bot Management
since Oct 2025
HSTS
since Nov 2023
Tag managers
Google Tag Manager
since Aug 2022
Video players
Web server extensions
Web servers
Apache Tomcat
since Aug 2022
Audience
- 100% desktop
South Korea
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
2.64 / 10 · ranked #2,254,751 of all domains
20 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1 s |
| INP | 25 ms |
| CLS | 0 |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Korean
- Weight: 4.6 MB · 90 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| www.his21.co.kr | 19 |
| blog.his21.co.kr | 15 |
| 40th.his21.co.kr | 8 |