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 = outlook.ms-acdc.office.com.
outlook.ms-acdc.office.com	canonical name = MDW-efz.ms-acdc.office.com.
Name:	MDW-efz.ms-acdc.office.com
Address: 52.96.170.66
Name:	MDW-efz.ms-acdc.office.com
Address: 52.96.156.18
Name:	MDW-efz.ms-acdc.office.com
Address: 52.96.79.210
Name:	MDW-efz.ms-acdc.office.com
Address: 52.96.191.2
Name:	MDW-efz.ms-acdc.office.com
Address: 2603:1036:304:3405::2
Name:	MDW-efz.ms-acdc.office.com
Address: 2603:1036:304:81d::2
Name:	MDW-efz.ms-acdc.office.com
Address: 2603:1036:304:870::2
Name:	MDW-efz.ms-acdc.office.com
Address: 2603:1036:304:871::2