Domain Blocked Check
Compare DNS resolution between mainland China and overseas resolvers plus an access test to judge whether a domain may be blocked.
mailchinp.com
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。
23.40.43.18, 23.40.43.11, 23.192.191.144, 23.192.191.136, 23.216.77.14, 23.216.77.17
Mainland IPs
184.27.185.30, 184.27.185.28, 23.200.75.122, 23.56.0.142, 23.56.0.138
Overseas IPs
Resolver results
| DNS | Region | Status | IP | Time (ms) |
|---|---|---|---|---|
| 阿里DNS 223.5.5.5 | Mainland China | OK | 23.40.43.18, 23.40.43.11 | 63 |
| 腾讯DNS 119.29.29.29 | Mainland China | OK | 23.192.191.144, 23.192.191.136 | 191 |
| 114DNS 114.114.114.114 | Mainland China | OK | 23.216.77.14, 23.216.77.17 | 519 |
| 百度DNS 180.76.76.76 | Mainland China | OK | 23.216.77.17, 23.216.77.14 | 644 |
| Google DNS 8.8.8.8 | Overseas | OK | 184.27.185.30, 184.27.185.28 | 40 |
| Cloudflare 1.1.1.1 | Overseas | OK | 23.200.75.122 | 12 |
| Quad9 9.9.9.9 | Overseas | OK | 23.200.75.122 | 6 |
| OpenDNS 208.67.222.222 | Overseas | OK | 23.56.0.142, 23.56.0.138 | 129 |
Access test
| URL | Status | Time (ms) |
|---|---|---|
| https://mailchinp.com | ERR_TLS_CERT_ALTNAME_INVALID | 366 |
| http://mailchinp.com | HTTP 400 | 581 |
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。