shell:$ nslookup -timeout=2 -retry=1 'prtldirderest.app.etb.co'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
prtldirderest.app.etb.co	canonical name = prtlwebetb.westus.cloudapp.azure.com.
Name:	prtlwebetb.westus.cloudapp.azure.com
Address: 13.91.46.159