What powers codescan.kr?
Last seen Oct 2026 · 13 technologies across 7 categories
Analytics
CDN
Font scripts
Miscellaneous
Programming languages
Security
Web frameworks
AI Crawlers
Blocks 11 of 33 AI crawlers we track by name in its robots.txt, restricts 4 more. Checked Oct 2026.
Training crawlers
- Applebot-Extended Blocked
- Bytespider Blocked
- CCBot Blocked
- cohere-training-data-crawler Blocked
- Diffbot Blocked
- Google-Extended Blocked
- GPTBot Blocked
- meta-externalagent Blocked
- ClaudeBot Restricted
- FacebookBot Allowed
Search and AI assistants
- Amazonbot Blocked
- PetalBot Blocked
- YouBot Blocked
- OAI-SearchBot Restricted
- PerplexityBot Restricted
User-request fetchers
- ChatGPT-User Restricted
The other 17 AI crawlers we track are not mentioned and only inherit the catch-all rules that apply to every crawler.
- robots.txt found
- llms.txt found
- ai.txt not found
- Sep 2026 chatgpt-user: Restricted (was Allowed)
- Sep 2026 perplexitybot: Restricted (was Allowed)
- Sep 2026 oai-searchbot: Restricted (was Allowed)
- Sep 2026 claudebot: Restricted (was Allowed)
- Sep 2026 claude-web: Restricted (was Allowed)
- Sep 2026 facebookbot: Allowed (was Blocked)
AI Crawlers
11 of 33 AI crawlers blocked
Standards: llms.txt
Audience
South Korea
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.27 / 10 · ranked #8,985,392 of all domains
1 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.8 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 1200 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Korean
- CDN: Cloudflare
- Weight: 0.6 MB · 42 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- SENTRIX
- Industry: Software and apps (declares
SoftwareApplication)
From the homepage's own structured data (Oct 2026).
Infrastructure
- Hosted on Cloudflare (104.21.94.158, IPv6)
- DNS: Cloudflare DNS
- Email: no MX record returned
- SSL: Let's Encrypt, ECDSA P256, wildcard, expires Dec 2026
- Common Crawl link graph: rank 397,252
- Verified with: Google
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Full technology history →
Report an incorrect detection
Recent changes
- detected Microsoft Clarity Aug 2026