shell:$ nslookup -timeout=2 -retry=1 'dd.myapp.com'
Server:		127.0.0.53
Address:	127.0.0.53#53

Non-authoritative answer:
dd.myapp.com	canonical name = dd.myapp.tc.qq.com.
dd.myapp.tc.qq.com	canonical name = dd.myapp.mid.dcloudstc.com.
dd.myapp.mid.dcloudstc.com	canonical name = dd.myapp.com.legodlied1.sched.dcloudstc.com.
Name:	dd.myapp.com.legodlied1.sched.dcloudstc.com
Address: 183.136.207.65
Name:	dd.myapp.com.legodlied1.sched.dcloudstc.com
Address: 119.39.203.131
Name:	dd.myapp.com.legodlied1.sched.dcloudstc.com
Address: 116.131.226.151
Name:	dd.myapp.com.legodlied1.sched.dcloudstc.com
Address: 116.131.226.145
Name:	dd.myapp.com.legodlied1.sched.dcloudstc.com
Address: 122.188.44.140
Name:	dd.myapp.com.legodlied1.sched.dcloudstc.com
Address: 122.188.45.181
Name:	dd.myapp.com.legodlied1.sched.dcloudstc.com
Address: 183.93.116.78
Name:	dd.myapp.com.legodlied1.sched.dcloudstc.com
Address: 218.69.49.181
Name:	dd.myapp.com.legodlied1.sched.dcloudstc.com
Address: 116.131.226.150
Name:	dd.myapp.com.legodlied1.sched.dcloudstc.com
Address: 123.6.190.168
Name:	dd.myapp.com.legodlied1.sched.dcloudstc.com
Address: 183.136.207.66
Name:	dd.myapp.com.legodlied1.sched.dcloudstc.com
Address: 157.255.130.189
Name:	dd.myapp.com.legodlied1.sched.dcloudstc.com
Address: 116.131.226.152
Name:	dd.myapp.com.legodlied1.sched.dcloudstc.com
Address: 116.131.226.143
Name:	dd.myapp.com.legodlied1.sched.dcloudstc.com
Address: 36.249.93.232