shell:$ nslookup -timeout=2 -retry=1 'chatsvcagg-int.teams.microsoft.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
chatsvcagg-int.teams.microsoft.com	canonical name = teams-chatsvcagg-int.trafficmanager.net.
teams-chatsvcagg-int.trafficmanager.net	canonical name = tmsg-int-azsc-01-csa-dns.westus.cloudapp.azure.com.
Name:	tmsg-int-azsc-01-csa-dns.westus.cloudapp.azure.com
Address: 52.114.158.91