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 = va06.ingress.herokuapp.com.
Name:	va06.ingress.herokuapp.com
Address: 3.219.96.23
Name:	va06.ingress.herokuapp.com
Address: 23.22.144.165
Name:	va06.ingress.herokuapp.com
Address: 3.216.88.24
Name:	va06.ingress.herokuapp.com
Address: 23.22.52.7