What powers otpin.co?
Last seen Oct 2026 · 9 technologies across 7 categories
Analytics
CDN
JavaScript frameworks
Miscellaneous
Programming languages
Security
Web servers
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 Nov 2026.
- robots.txt found
- llms.txt found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Standards: llms.txt
Audience
- 100% phone
South Korea
Japan
Singapore
United States
Hong Kong SAR China
Taiwan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.06 / 10 · ranked #11,584,505 of all domains
3 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.4 s |
| INP | 125 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: English
- Weight: 0.9 MB · 27 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Korea Telecom (211.62.104.247)
- DNS: Cloudflare DNS
- Email: no MX record returned
- SSL: Sectigo, RSA 2048, wildcard, expires Mar 2027
- Common Crawl link graph: rank 70,095,999, 2 hosts
DNS records as swept Nov 2026, certificate as seen Nov 2026. How the web is hosted
Full technology history →
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Recent changes
- dropped Unpkg Oct 2026
- dropped AOS Sep 2026
- dropped Bootstrap Sep 2026
- dropped Bootstrap Icons Sep 2026
- dropped Google Font API Sep 2026
- dropped jQuery Sep 2026
- dropped Lightbox Sep 2026
- dropped PWA Sep 2026
- dropped Swiper Sep 2026