shell:$ nslookup -timeout=2 -retry=1 'dlied1.back.tcdn.qq.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
Name:	dlied1.back.tcdn.qq.com
Address: 110.52.193.13
Name:	dlied1.back.tcdn.qq.com
Address: 110.52.193.12
Name:	dlied1.back.tcdn.qq.com
Address: 1.31.130.20
Name:	dlied1.back.tcdn.qq.com
Address: 110.52.193.14
Name:	dlied1.back.tcdn.qq.com
Address: 1.189.213.27
Name:	dlied1.back.tcdn.qq.com
Address: 1.189.213.26
Name:	dlied1.back.tcdn.qq.com
Address: 101.69.121.33
Name:	dlied1.back.tcdn.qq.com
Address: 110.52.193.11
Name:	dlied1.back.tcdn.qq.com
Address: 101.69.121.32
Name:	dlied1.back.tcdn.qq.com
Address: 1.189.213.25
Name:	dlied1.back.tcdn.qq.com
Address: 1.31.130.19
Name:	dlied1.back.tcdn.qq.com
Address: 1.189.213.24
Name:	dlied1.back.tcdn.qq.com
Address: 1.31.173.41
Name:	dlied1.back.tcdn.qq.com
Address: 101.69.121.31
Name:	dlied1.back.tcdn.qq.com
Address: 1.189.213.23