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

Non-authoritative answer:
is.alicdn.com	canonical name = wildcard.alicdn.com.edgekey.net.
wildcard.alicdn.com.edgekey.net	canonical name = e11956.b.akamaiedge.net.
Name:	e11956.b.akamaiedge.net
Address: 23.223.171.47