Domain Blocked Check
Compare DNS resolution between mainland China and overseas resolvers plus an access test to judge whether a domain may be blocked.
u.is
Confidence: 高
Possible DNS pollution
中国内地与海外 DNS 解析到完全不同的 IP，可能存在 DNS 污染或 CDN 分线路解析，请结合访问测试判断。
169.150.225.43, 107.150.176.1
Mainland IPs
141.164.35.160, 138.199.24.219, 185.93.3.244, 37.19.215.33
Overseas IPs
Resolver results
| DNS | Region | Status | IP | Time (ms) |
|---|---|---|---|---|
| 阿里DNS 223.5.5.5 | Mainland China | OK | 169.150.225.43 | 64 |
| 腾讯DNS 119.29.29.29 | Mainland China | OK | 107.150.176.1 | 593 |
| 114DNS 114.114.114.114 | Mainland China | OK | 107.150.176.1 | 287 |
| 百度DNS 180.76.76.76 | Mainland China | OK | 107.150.176.1 | 637 |
| Google DNS 8.8.8.8 | Overseas | OK | 141.164.35.160 | 344 |
| Cloudflare 1.1.1.1 | Overseas | OK | 138.199.24.219 | 615 |
| Quad9 9.9.9.9 | Overseas | OK | 185.93.3.244 | 206 |
| OpenDNS 208.67.222.222 | Overseas | OK | 37.19.215.33 | 2462 |
Access test
| URL | Status | Time (ms) |
|---|---|---|
| https://u.is | HTTP 200 | 3076 |
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。