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

Non-authoritative answer:
web.whatsapp.com	canonical name = mmx-ds.cdn.whatsapp.net.
Name:	mmx-ds.cdn.whatsapp.net
Address: 57.144.173.32
Name:	mmx-ds.cdn.whatsapp.net
Address: 2a03:2880:f356:120:face:b00c:0:167