shell:$ nslookup -timeout=2 -retry=1 'lookaside.facebook.com'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
lookaside.facebook.com	canonical name = scontent.xx.fbcdn.net.
Name:	scontent.xx.fbcdn.net
Address: 57.144.172.128
Name:	scontent.xx.fbcdn.net
Address: 2a03:2880:f082:108:face:b00c:0:3