shell:$ nslookup -timeout=2 -retry=1 'outlook.office365.com'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
outlook.office365.com	canonical name = ooc-g2.tm-4.office.com.
ooc-g2.tm-4.office.com	canonical name = atm.outlook.mira.tm.svc.cloud.microsoft.
Name:	atm.outlook.mira.tm.svc.cloud.microsoft
Address: 52.96.79.66
Name:	atm.outlook.mira.tm.svc.cloud.microsoft
Address: 52.96.79.146
Name:	atm.outlook.mira.tm.svc.cloud.microsoft
Address: 52.96.64.226
Name:	atm.outlook.mira.tm.svc.cloud.microsoft
Address: 52.96.156.18
Name:	atm.outlook.mira.tm.svc.cloud.microsoft
Address: 52.96.156.2
Name:	atm.outlook.mira.tm.svc.cloud.microsoft
Address: 52.96.170.66
Name:	atm.outlook.mira.tm.svc.cloud.microsoft
Address: 52.96.79.226
Name:	atm.outlook.mira.tm.svc.cloud.microsoft
Address: 52.96.163.18
Name:	atm.outlook.mira.tm.svc.cloud.microsoft
Address: 2603:1036:304:800::2
Name:	atm.outlook.mira.tm.svc.cloud.microsoft
Address: 2603:1036:304:839::2
Name:	atm.outlook.mira.tm.svc.cloud.microsoft
Address: 2603:1036:304:85e::2
Name:	atm.outlook.mira.tm.svc.cloud.microsoft
Address: 2603:1036:304:86e::2
Name:	atm.outlook.mira.tm.svc.cloud.microsoft
Address: 2603:1036:304:2854::2
Name:	atm.outlook.mira.tm.svc.cloud.microsoft
Address: 2603:1036:304:2853::2
Name:	atm.outlook.mira.tm.svc.cloud.microsoft
Address: 2603:1036:304:2852::2
Name:	atm.outlook.mira.tm.svc.cloud.microsoft
Address: 2603:1036:304:285b::2