Domain Blocked Check

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

calm.com

Confidence: 高

Not blocked 各节点 DNS 解析一致且可正常解析，未发现被墙特征。

13.225.117.122, 13.225.117.8, 13.225.117.15, 13.225.117.48, 65.8.76.69, 65.8.76.54, 65.8.76.28, 18.245.31.73, 18.245.31.49, 18.245.31.38, 18.245.31.16

Mainland IPs

13.225.117.122, 13.225.117.15, 13.225.117.48, 13.225.117.8

Overseas IPs

Resolver results

DNS	Region	Status	IP	Time (ms)
阿里DNS 223.5.5.5	Mainland China	OK	13.225.117.122, 13.225.117.8, 13.225.117.15, 13.225.117.48	64
腾讯DNS 119.29.29.29	Mainland China	OK	13.225.117.15, 13.225.117.48, 13.225.117.8, 13.225.117.122	111
114DNS 114.114.114.114	Mainland China	OK	65.8.76.69, 65.8.76.54, 65.8.76.28	94
百度DNS 180.76.76.76	Mainland China	OK	18.245.31.73, 18.245.31.49, 18.245.31.38, 18.245.31.16	270
Google DNS 8.8.8.8	Overseas	OK	13.225.117.122, 13.225.117.15, 13.225.117.48, 13.225.117.8	46
Cloudflare 1.1.1.1	Overseas	OK	13.225.117.48, 13.225.117.8, 13.225.117.122, 13.225.117.15	6
Quad9 9.9.9.9	Overseas	OK	13.225.117.48, 13.225.117.8, 13.225.117.15, 13.225.117.122	119
OpenDNS 208.67.222.222	Overseas	OK	13.225.117.122, 13.225.117.8, 13.225.117.15, 13.225.117.48	297

Access test

URL	Status	Time (ms)
https://calm.com	HTTP 200	1529

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。