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

Non-authoritative answer:
app.halogolfclub.com	canonical name = halogolfclubadminwebtselprd.azurewebsites.net.
halogolfclubadminwebtselprd.azurewebsites.net	canonical name = waws-prod-sg1-041.sip.azurewebsites.windows.net.
waws-prod-sg1-041.sip.azurewebsites.windows.net	canonical name = waws-prod-sg1-041.southeastasia.cloudapp.azure.com.
Name:	waws-prod-sg1-041.southeastasia.cloudapp.azure.com
Address: 13.67.9.0