shell:$ nslookup -timeout=2 -retry=1 'at.alicdn.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
at.alicdn.com	canonical name = at.alicdn.com.danuoyi.alicdn.com.
Name:	at.alicdn.com.danuoyi.alicdn.com
Address: 155.102.55.6
Name:	at.alicdn.com.danuoyi.alicdn.com
Address: 155.102.55.5