shell:$ nslookup -timeout=2 -retry=1 'mail-db8pr02cu00101.inbound.protection.outlook.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
Name:	mail-db8pr02cu00101.inbound.protection.outlook.com
Address: 52.101.68.25