shell:$ nslookup -timeout=2 -retry=1 'www.cmlink.com' Server: 127.0.0.53 Address: 127.0.0.53#53 Non-authoritative answer: www.cmlink.com canonical name = www.cmlink.com.e.aliyunwaf5.com. Name: www.cmlink.com.e.aliyunwaf5.com Address: 47.75.234.120