What powers sdedu.co.kr?
Last seen Sep 2026 · 15 technologies across 7 categories
Analytics
CMS
Databases
JavaScript libraries
Miscellaneous
Programming languages
Tag managers
AI Crawlers
Does not block any of the 33 AI crawlers we track in its robots.txt. Checked Oct 2026.
Training crawlers
- GPTBot Allowed
User-request fetchers
- ChatGPT-User Allowed
The other 31 AI crawlers we track are not mentioned and only inherit the catch-all rules that apply to every crawler.
- robots.txt found
- llms.txt not found
- ai.txt not found
- Oct 2026 chatgpt-user added to robots.txt
- Oct 2026 gptbot added to robots.txt
- Sep 2026 chatgpt-user removed from robots.txt
- Sep 2026 gptbot removed from robots.txt
- Sep 2026 chatgpt-user added to robots.txt
- Sep 2026 gptbot added to robots.txt
AI Crawlers
No AI crawlers blocked
Audience
- 83% desktop
- 11% phone
- 6% tablet
South Korea
India
Indonesia
Iraq
Vietnam
Philippines
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.49 / 10 · ranked #6,564,512 of all domains
5 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.8 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Korean
- Weight: 8.9 MB · 236 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
From the homepage's own structured data (Oct 2026).
Infrastructure
- Hosted on Oracle Cloud (152.70.95.248)
- Email: no MX record returned
- SSL: Let's Encrypt, RSA 2048, wildcard, expires Jan 2027
- Common Crawl link graph: rank 14,990,679, 4 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| intra.sdedu.co.kr | 13 |
| m.sdedu.co.kr | 13 |
| www.sdedu.co.kr | 13 |
| cyber.sdedu.co.kr | 7 |