shell:$ nslookup -timeout=2 -retry=1 'presidency-eg.mail.protection.outlook.com'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
Name:	presidency-eg.mail.protection.outlook.com
Address: 52.101.73.19
Name:	presidency-eg.mail.protection.outlook.com
Address: 52.101.68.25
Name:	presidency-eg.mail.protection.outlook.com
Address: 52.101.68.27
Name:	presidency-eg.mail.protection.outlook.com
Address: 52.101.73.6