shell:$ nslookup -timeout=2 -retry=1 'dd.myapp.com'
;; communications error to 75.98.161.224#53: timed out
Server:		69.39.86.5
Address:	69.39.86.5#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: 116.196.148.15
Name:	dd.myapp.com.legodlied1.sched.dcloudstc.com
Address: 122.188.45.181