shell:$ nslookup -timeout=2 -retry=1 'hk.cdn.citibank.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
hk.cdn.citibank.com	canonical name = hk.cdn.citibank.com.edgekey.net.
hk.cdn.citibank.com.edgekey.net	canonical name = e289039.dsca.akamaiedge.net.
Name:	e289039.dsca.akamaiedge.net
Address: 23.62.106.139
Name:	e289039.dsca.akamaiedge.net
Address: 23.62.106.141
Name:	e289039.dsca.akamaiedge.net
Address: 2600:1405:d400:8::173e:6a8b
Name:	e289039.dsca.akamaiedge.net
Address: 2600:1405:d400:8::173e:6a8d