shell:$ nslookup -timeout=2 -retry=1 'a1220.w7.akamai.net'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
a1220.w7.akamai.net	canonical name = a1220.w7.akamai.net.0.1.cn.akamaitech.net.
Name:	a1220.w7.akamai.net.0.1.cn.akamaitech.net
Address: 23.62.106.202
Name:	a1220.w7.akamai.net.0.1.cn.akamaitech.net
Address: 23.62.106.206