shell:$ nslookup -timeout=2 -retry=1 'lerequest-lookaside.whatsapp.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
lerequest-lookaside.whatsapp.com	canonical name = lerequest.c10r.facebook.com.
Name:	lerequest.c10r.facebook.com
Address: 57.144.173.150
Name:	lerequest.c10r.facebook.com
Address: 2a03:2880:f356:196:face:b00c:0:69e0