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

Non-authoritative answer:
tableau.demdex.com	canonical name = tab-tabworker-black-tableau-prod-352296543.us-east-1.elb.amazonaws.com.
Name:	tab-tabworker-black-tableau-prod-352296543.us-east-1.elb.amazonaws.com
Address: 44.215.4.136
Name:	tab-tabworker-black-tableau-prod-352296543.us-east-1.elb.amazonaws.com
Address: 54.158.221.109