What powers yd1st.com?
Last seen Aug 2026 · 19 technologies across 12 categories
Advertising
Analytics
CDN
Font scripts
JavaScript frameworks
JavaScript libraries
Miscellaneous
Programming languages
Security
UI frameworks
Video players
Widgets
AI Crawlers
Blocks 8 of 33 AI crawlers we track by name in its robots.txt. Checked Sep 2026.
Training crawlers
- Applebot-Extended Blocked
- Bytespider Blocked
- CCBot Blocked
- ClaudeBot Blocked
- Google-Extended Blocked
- GPTBot Blocked
- meta-externalagent Blocked
Search and AI assistants
- Amazonbot Blocked
The other 25 AI crawlers we track are not mentioned and stay allowed by default.
- robots.txt found
- llms.txt not found
- ai.txt not found
Content Signals:
search=yes ai-train=no declared in robots.txt
AI Crawlers
8 of 33 AI crawlers blocked
Standards: Content Signals
Audience
- 75% phone
- 20% desktop
- 5% tablet
South Korea
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
0.73 / 10 · ranked #18,327,547 of all domains
3 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.2 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Aug 2026.
Subdomains
| Host | Techs |
|---|---|
| kr2.yd1st.com | 19 |
| kr3.yd1st.com | 19 |
| kr1.yd1st.com | 17 |
| kr7.yd1st.com | 17 |
| home.yd1st.com | 5 |