shell:$ nslookup -timeout=2 -retry=1 'workflow-robi4.msappproxy.net'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
workflow-robi4.msappproxy.net	canonical name = 255b709d-ce46-478e-b485-e237f988c923.asia.tenant.runtime.msappproxy.net.
255b709d-ce46-478e-b485-e237f988c923.asia.tenant.runtime.msappproxy.net	canonical name = cwap-asia2-runtime.routing.msappproxy.net.
cwap-asia2-runtime.routing.msappproxy.net	canonical name = asia.proxy-1.appproxy.msidentity.com.
asia.proxy-1.appproxy.msidentity.com	canonical name = www.tm.asia.proxy-1.appproxy.trafficmanager.net.
www.tm.asia.proxy-1.appproxy.trafficmanager.net	canonical name = proxy-appproxy-ejpn-ty1p-1.msappproxy.net.
Name:	proxy-appproxy-ejpn-ty1p-1.msappproxy.net
Address: 4.216.205.136