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

Non-authoritative answer:
down-update.qq.com	canonical name = downupdate.lmtlego.sched.apdcdn.com.
Name:	downupdate.lmtlego.sched.apdcdn.com
Address: 101.33.21.193
Name:	downupdate.lmtlego.sched.apdcdn.com
Address: 43.168.117.37
Name:	downupdate.lmtlego.sched.apdcdn.com
Address: 43.159.77.140