shell:$ nslookup -timeout=2 -retry=1 'whatsapp-cdn-shv-02-sin6.fbcdn.net'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
Name:	whatsapp-cdn-shv-02-sin6.fbcdn.net
Address: 157.240.13.54