shell:$ nslookup -timeout=2 -retry=1 'm.hotmail.com'
Server:		127.0.0.53
Address:	127.0.0.53#53

Non-authoritative answer:
m.hotmail.com	canonical name = eas.outlook.com.
eas.outlook.com	canonical name = outlook.office365.com.
outlook.office365.com	canonical name = outlook.cloud.microsoft.
outlook.cloud.microsoft	canonical name = atm.outlook.mira.tm.svc.cloud.microsoft.
Name:	atm.outlook.mira.tm.svc.cloud.microsoft
Address: 40.99.226.146
Name:	atm.outlook.mira.tm.svc.cloud.microsoft
Address: 40.99.227.50
Name:	atm.outlook.mira.tm.svc.cloud.microsoft
Address: 52.96.88.210
Name:	atm.outlook.mira.tm.svc.cloud.microsoft
Address: 52.96.191.146
Name:	atm.outlook.mira.tm.svc.cloud.microsoft
Address: 52.96.215.18
Name:	atm.outlook.mira.tm.svc.cloud.microsoft
Address: 52.96.215.82
Name:	atm.outlook.mira.tm.svc.cloud.microsoft
Address: 52.96.230.194
Name:	atm.outlook.mira.tm.svc.cloud.microsoft
Address: 40.99.164.114
Name:	atm.outlook.mira.tm.svc.cloud.microsoft
Address: 2603:1036:30a:1801::2
Name:	atm.outlook.mira.tm.svc.cloud.microsoft
Address: 2603:1036:30a:1808::2
Name:	atm.outlook.mira.tm.svc.cloud.microsoft
Address: 2603:1036:30a:1824::2
Name:	atm.outlook.mira.tm.svc.cloud.microsoft
Address: 2603:1036:30a:182b::2
Name:	atm.outlook.mira.tm.svc.cloud.microsoft
Address: 2603:1036:30a:82d::2
Name:	atm.outlook.mira.tm.svc.cloud.microsoft
Address: 2603:1036:30a:82f::2
Name:	atm.outlook.mira.tm.svc.cloud.microsoft
Address: 2603:1036:30a:1003::2
Name:	atm.outlook.mira.tm.svc.cloud.microsoft
Address: 2603:1036:30a:1424::2