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

Non-authoritative answer:
om.qq.com	canonical name = om.qq.com.cdn.ettdnsv.com.
om.qq.com.cdn.ettdnsv.com	canonical name = e5121.b.akamaiedge.net.
Name:	e5121.b.akamaiedge.net
Address: 2.17.84.67