shell:$ nslookup -timeout=2 -retry=1 'whatsapp-cdn-shv-01-iad3.fbcdn.net'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
Name:	whatsapp-cdn-shv-01-iad3.fbcdn.net
Address: 31.13.66.56