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

Non-authoritative answer:
Name:	chat.cdn.whatsapp.net
Address: 57.144.173.33
Name:	chat.cdn.whatsapp.net
Address: 2a03:2880:f356:121:face:b00c:0:7260