Domain Blocked Check
Compare DNS resolution between mainland China and overseas resolvers plus an access test to judge whether a domain may be blocked.
colorado.guide
Confidence: 中
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。
213.210.57.252, 147.93.77.56, 213.210.57.80, 147.93.77.217, 77.37.48.124, 191.101.228.175
Mainland IPs
147.93.77.201, 213.210.57.242, 84.32.84.97, 2.57.91.11, 213.210.57.53, 147.93.77.111, 213.210.57.223, 147.93.77.62
Overseas IPs
Resolver results
| DNS | Region | Status | IP | Time (ms) |
|---|---|---|---|---|
| 阿里DNS 223.5.5.5 | Mainland China | OK | 213.210.57.252, 147.93.77.56 | 72 |
| 腾讯DNS 119.29.29.29 | Mainland China | OK | 213.210.57.80, 147.93.77.217 | 223 |
| 114DNS 114.114.114.114 | Mainland China | OK | 77.37.48.124, 191.101.228.175 | 500 |
| 百度DNS 180.76.76.76 | Mainland China | ESERVFAIL | - | 4179 |
| Google DNS 8.8.8.8 | Overseas | OK | 147.93.77.201, 213.210.57.242 | 101 |
| Cloudflare 1.1.1.1 | Overseas | OK | 84.32.84.97, 2.57.91.11 | 104 |
| Quad9 9.9.9.9 | Overseas | OK | 213.210.57.53, 147.93.77.111 | 567 |
| OpenDNS 208.67.222.222 | Overseas | OK | 213.210.57.223, 147.93.77.62 | 50 |
Access test
| URL | Status | Time (ms) |
|---|---|---|
| https://colorado.guide | HTTP 200 | 563 |
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。