What powers hj.ac.kr?
Last seen Oct 2026 · 40 technologies across 18 categories
Analytics
Google Analytics
since Mar 2019
CDN
Amazon S3
since May 2022
cdnjs
since Dec 2021
Cloudflare
since May 2022
Google Hosted Libraries
since Sep 2023
jQuery CDN
since Sep 2026
jsDelivr
since Dec 2020
Editors
DreamWeaver
since Apr 2023
Font scripts
Google Font API
since Sep 2023
JavaScript frameworks
JavaScript libraries
LMS
Moodle
since Dec 2020
Miscellaneous
Operating systems
Windows Server
since Apr 2023
PaaS
Amazon Web Services
since May 2022
Programming languages
Security
HSTS
since Oct 2022
Tag managers
Google Tag Manager
since Mar 2019
UI frameworks
Video players
YouTube
since Sep 2023
Web frameworks
Microsoft ASP.NET
since Apr 2023
Web servers
Webmail
Google Workspace
since Aug 2022
AI Crawlers
Blocks all crawlers by default in robots.txt (User-agent: *). Checked Nov 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
- Nov 2026 *: Blocked (was Allowed)
AI Crawlers
All crawlers blocked
Audience
- 80% desktop
- 11% phone
- 9% tablet
South Korea
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.70 / 10 · ranked #4,943,460 of all domains
8 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.7 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Oct 2026.
Page
- Language: Korean
- Weight: 2.6 MB · 22 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- DNS: hj.ac.kr
- Email: Google Workspace
- Email security: SPF (hard fail), DMARC quarantine
- SSL: Sectigo, RSA 2048, wildcard, expires Dec 2026
- Common Crawl link graph: rank 12,784,430, 51 hosts
- Verified with: Google, Microsoft 365
DNS records as swept Nov 2026, certificate as seen Nov 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| lms.hj.ac.kr | 15 |
| ipsi.hj.ac.kr | 13 |
| gmail.hj.ac.kr | 10 |
| lib.hj.ac.kr | 10 |
| baking.hj.ac.kr | 9 |
| nursing.hj.ac.kr | 8 |
| anchor.hj.ac.kr | 7 |
| bus.hj.ac.kr | 6 |
| gw.hj.ac.kr | 6 |
| wess.hj.ac.kr | 5 |
| www.hj.ac.kr | 5 |
| webipsi.hj.ac.kr | 4 |
| sugang2.hj.ac.kr | 2 |
| webhaksa.hj.ac.kr | 2 |
| sugang.hj.ac.kr | 1 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped Apache HTTP Server Jan 2026