shell:$ nslookup -timeout=2 -retry=1 'du-portal.mondiamedia.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
du-portal.mondiamedia.com	canonical name = nlb-default-ecs2-ext-md-sol-prod-2085716b21d3802a.elb.eu-west-1.amazonaws.com.
Name:	nlb-default-ecs2-ext-md-sol-prod-2085716b21d3802a.elb.eu-west-1.amazonaws.com
Address: 54.76.72.238
Name:	nlb-default-ecs2-ext-md-sol-prod-2085716b21d3802a.elb.eu-west-1.amazonaws.com
Address: 108.128.64.186
Name:	nlb-default-ecs2-ext-md-sol-prod-2085716b21d3802a.elb.eu-west-1.amazonaws.com
Address: 34.248.168.122