Domain Blocked Check
Compare DNS resolution between mainland China and overseas resolvers plus an access test to judge whether a domain may be blocked.
khanacademy.com
Confidence: 高
Not blocked
各节点 DNS 解析一致且可正常解析，未发现被墙特征。
52.85.128.74, 52.85.128.62, 52.85.128.118, 52.85.128.21, 18.244.18.30, 18.244.18.115, 18.244.18.77, 18.244.18.48, 18.245.199.2, 18.245.199.63, 18.245.199.36, 18.245.199.82
Mainland IPs
52.85.128.74, 52.85.128.62, 52.85.128.118, 52.85.128.21
Overseas IPs
Resolver results
| DNS | Region | Status | IP | Time (ms) |
|---|---|---|---|---|
| 阿里DNS 223.5.5.5 | Mainland China | OK | 52.85.128.74, 52.85.128.62, 52.85.128.118, 52.85.128.21 | 140 |
| 腾讯DNS 119.29.29.29 | Mainland China | OK | 52.85.128.21, 52.85.128.118, 52.85.128.74, 52.85.128.62 | 115 |
| 114DNS 114.114.114.114 | Mainland China | OK | 18.244.18.30, 18.244.18.115, 18.244.18.77, 18.244.18.48 | 367 |
| 百度DNS 180.76.76.76 | Mainland China | OK | 18.245.199.2, 18.245.199.63, 18.245.199.36, 18.245.199.82 | 264 |
| Google DNS 8.8.8.8 | Overseas | OK | 52.85.128.74, 52.85.128.62, 52.85.128.118, 52.85.128.21 | 45 |
| Cloudflare 1.1.1.1 | Overseas | OK | 52.85.128.62, 52.85.128.118, 52.85.128.21, 52.85.128.74 | 13 |
| Quad9 9.9.9.9 | Overseas | OK | 52.85.128.74, 52.85.128.118, 52.85.128.21, 52.85.128.62 | 10 |
| OpenDNS 208.67.222.222 | Overseas | OK | 52.85.128.21, 52.85.128.62, 52.85.128.74, 52.85.128.118 | 41 |
Access test
| URL | Status | Time (ms) |
|---|---|---|
| https://khanacademy.com | HTTP 200 | 69 |
说明：通过对比中国内地与海外多节点 DNS 解析结果并结合访问测试判断，结果为参考性结论，不能替代专业网络诊断。