What powers 
939.co.kr?
Last seen Sep 2026 · 2 technologies across 2 categories
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 checked
- ai.txt not checked
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
AI Crawlers
No AI crawlers blocked
Audience
- 96% desktop
- 4% phone
South Korea
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
6.17 / 10 · ranked #98,685 of all domains
140 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.5 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 100 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Weight: 0.8 MB · 30 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on HCLC-AS-KR abcle (182.252.178.53)
- DNS: mastersoft.co.kr
- Email: mastersoft.co.kr
- Email security: no SPF record, no DMARC record
- SSL: Sectigo, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 7,112,203, 2 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| 939.co.kr | 2 |
| www.939.co.kr | 2 |