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

Non-authoritative answer:
portal.azure.com	canonical name = portal.azure.com.trafficmanager.net.
portal.azure.com.trafficmanager.net	canonical name = azureportal.z01.azurefd.net.
azureportal.z01.azurefd.net	canonical name = azurefd-p-prod.trafficmanager.net.
azurefd-p-prod.trafficmanager.net	canonical name = shed.s-part-0032.p-0010.p-msedge.net.
shed.s-part-0032.p-0010.p-msedge.net	canonical name = s-part-0032.p-0010.p-msedge.net.
Name:	s-part-0032.p-0010.p-msedge.net
Address: 150.171.84.32
Name:	s-part-0032.p-0010.p-msedge.net
Address: 2603:1061:11::32