shell:$ nslookup -timeout=2 -retry=1 'gac1.dcloud.net.cn'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
Name:	gac1.dcloud.net.cn
Address: 170.106.80.21
Name:	gac1.dcloud.net.cn
Address: 170.106.116.5
Name:	gac1.dcloud.net.cn
Address: 170.106.98.93
Name:	gac1.dcloud.net.cn
Address: 49.51.73.146
Name:	gac1.dcloud.net.cn
Address: 170.106.171.110