shell:$ nslookup -timeout=2 -retry=1 'dldir1.qq.com'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
dldir1.qq.com	canonical name = dldir1.qq.com.tcdn.qq.com.
dldir1.qq.com.tcdn.qq.com	canonical name = dldir1.qq.com.mid.dcloudstc.com.
dldir1.qq.com.mid.dcloudstc.com	canonical name = dldir1.legodlied1.sched.dcloudstc.com.
Name:	dldir1.legodlied1.sched.dcloudstc.com
Address: 116.153.78.161
Name:	dldir1.legodlied1.sched.dcloudstc.com
Address: 116.153.78.198
Name:	dldir1.legodlied1.sched.dcloudstc.com
Address: 36.249.91.90
Name:	dldir1.legodlied1.sched.dcloudstc.com
Address: 14.205.93.185
Name:	dldir1.legodlied1.sched.dcloudstc.com
Address: 116.153.78.153