Domain Blocked Check
Compare DNS resolution between mainland China and overseas resolvers plus an access test to judge whether a domain may be blocked.
freeexams.com
Confidence: 低
Possibly blocked
海外 DNS 可正常解析，但中国内地 DNS 全部解析失败，存在被墙（DNS 污染/封锁）的可能。
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Mainland IPs
208.73.209.18
Overseas IPs
Resolver results
| DNS | Region | Status | IP | Time (ms) |
|---|---|---|---|---|
| 阿里DNS 223.5.5.5 | Mainland China | ESERVFAIL | - | 2404 |
| 腾讯DNS 119.29.29.29 | Mainland China | ESERVFAIL | - | 1638 |
| 114DNS 114.114.114.114 | Mainland China | ETIMEOUT | - | 9007 |
| 百度DNS 180.76.76.76 | Mainland China | ESERVFAIL | - | 4185 |
| Google DNS 8.8.8.8 | Overseas | ESERVFAIL | - | 5033 |
| Cloudflare 1.1.1.1 | Overseas | OK | 208.73.209.18 | 996 |
| Quad9 9.9.9.9 | Overseas | ESERVFAIL | - | 337 |
| OpenDNS 208.67.222.222 | Overseas | ESERVFAIL | - | 6006 |
Access test
| URL | Status | Time (ms) |
|---|---|---|
| https://freeexams.com | EAI_AGAIN | 9440 |
| http://freeexams.com | TimeoutError | 10000 |
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。