shell:$ nslookup -timeout=2 -retry=1 'sixproxy.herokuapp.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
sixproxy.herokuapp.com	canonical name = va05.ingress.herokuapp.com.
Name:	va05.ingress.herokuapp.com
Address: 54.208.186.182
Name:	va05.ingress.herokuapp.com
Address: 34.201.81.34
Name:	va05.ingress.herokuapp.com
Address: 54.243.129.215
Name:	va05.ingress.herokuapp.com
Address: 54.224.34.30