Domain report
linkdoc.com
linkdoc.com ranks in the top 0.41% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 9 distinct hosts observed under it.
Connectivity
- Top percentile
- 0.41%
- Hosts observed
- 9
From the Common Crawl cc-main-2026-jul-aug-sep hyperlink graph, 133,241,980 domains total. What this rank means
HTTPS reachability
https://linkdoc.com/ answered with HTTP 200.
DNS records
- A
- 182.92.244.212
- AAAA
- No records found.
- MX
- 5 antispam.linkdoc.com.
- NS
- vip4.alidns.com.
- vip3.alidns.com.
Live preview
This site sends "X-Frame-Options: SAMEORIGIN", which blocks embedding it here.
Since linkdoc.com can't be embedded live, this is a captured screenshot instead — a snapshot from whenever it was last rendered, not necessarily this exact moment.
Domain registration (WHOIS / RDAP)
RDAP lookup failed (HTTP 429).
SSL certificate
Certificate Transparency lookup failed (HTTP 429).
HTTP & security headers
Response
- Server
- cloudflare
- Content-Type
- text/html
- Cache-Control
- max-age=180
- Content-Encoding
- Not sent
Security
- Content-Security-Policy
- default-src 'self' 'unsafe-inline' 'unsafe-eval' blob: data: hm.baidu.com linkdoc-static.bw.linkdoc.com;frame-ancestors 'self'
- Strict-Transport-Security
- max-age=63072000; includeSubdomains; preload
- X-Frame-Options
- SAMEORIGIN
- X-Content-Type-Options
- Not sent
- Referrer-Policy
- Not sent
- Permissions-Policy
- camera 'none'; geolocation 'none'; microphone 'none'
Redirect chain
- 1.
http://linkdoc.com/HTTP 301→ https://linkdoc.com/
- 2.
https://linkdoc.com/HTTP 301→ https://www.linkdoc.com/
- 3.
https://www.linkdoc.com/HTTP 200
Meta tags
- Title
- 首页 - LinkDoc
- Description
- LinkDoc是人工智能与医疗大数据解决方案提供者
- Canonical
- Not set
- Robots
- Not set
- Generator
- Not set
- Open Graph title
- Not set
- Open Graph description
- Not set
- Open Graph image
- Not set
- Open Graph type
- Not set
- Twitter card
- Not set
- Twitter title
- Not set
- Twitter image
- Not set
robots.txt
robots.txt request failed (HTTP 502).
Technology detected
Best-effort, based on a small set of well-known signals — this may be incomplete.
- Cloudflarecdn
Server: cloudflare
Related domains
Similar connectivity
Domains ranked just above and below it in the same snapshot.