Domain Blocked Check

Compare DNS resolution between mainland China and overseas resolvers plus an access test to judge whether a domain may be blocked.

zan.net

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。

220.181.166.18, 106.227.102.162, 119.188.172.143, 121.29.9.41

Mainland IPs

59.108.140.9, 59.108.140.11, 59.108.140.8, 59.108.140.10, 59.108.140.12, 59.108.140.7, 59.108.140.6, 59.108.140.13, 111.3.88.166, 58.205.221.43, 58.205.221.37, 58.205.221.39, 58.205.221.44, 58.205.221.40, 58.205.221.38, 58.205.221.41, 58.205.221.42, 103.85.145.197, 103.85.145.198, 103.85.145.199, 103.85.145.200, 103.85.145.201, 103.85.145.176, 103.85.145.177, 103.85.145.178

Overseas IPs

Resolver results

DNS	Region	Status	IP	Time (ms)
阿里DNS 223.5.5.5	Mainland China	OK	220.181.166.18	126
腾讯DNS 119.29.29.29	Mainland China	OK	106.227.102.162	219
114DNS 114.114.114.114	Mainland China	OK	119.188.172.143	283
百度DNS 180.76.76.76	Mainland China	OK	121.29.9.41	467
Google DNS 8.8.8.8	Overseas	OK	59.108.140.9, 59.108.140.11, 59.108.140.8, 59.108.140.10, 59.108.140.12, 59.108.140.7, 59.108.140.6, 59.108.140.13	193
Cloudflare 1.1.1.1	Overseas	OK	111.3.88.166	820
Quad9 9.9.9.9	Overseas	OK	58.205.221.43, 58.205.221.37, 58.205.221.39, 58.205.221.44, 58.205.221.40, 58.205.221.38, 58.205.221.41, 58.205.221.42	356
OpenDNS 208.67.222.222	Overseas	OK	103.85.145.197, 103.85.145.198, 103.85.145.199, 103.85.145.200, 103.85.145.201, 103.85.145.176, 103.85.145.177, 103.85.145.178	364

Access test

URL	Status	Time (ms)
https://zan.net	HTTP 502	3470

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。