shell:$ nslookup -timeout=2 -retry=1 'outlook.office365.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
outlook.office365.com	canonical name = ooc-g2.tm-4.office.com.
Name:	ooc-g2.tm-4.office.com
Address: 52.96.156.18
Name:	ooc-g2.tm-4.office.com
Address: 52.96.79.82
Name:	ooc-g2.tm-4.office.com
Address: 52.96.163.50
Name:	ooc-g2.tm-4.office.com
Address: 52.96.157.82
Name:	ooc-g2.tm-4.office.com
Address: 52.96.164.178
Name:	ooc-g2.tm-4.office.com
Address: 52.96.79.34
Name:	ooc-g2.tm-4.office.com
Address: 52.96.66.162
Name:	ooc-g2.tm-4.office.com
Address: 52.96.157.50
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: 2603:1036:304:801::2
Name:	MDW-efz.ms-acdc.office.com
Address: 2603:1036:304:807::2
Name:	MDW-efz.ms-acdc.office.com
Address: 2603:1036:304:805::2
Name:	MDW-efz.ms-acdc.office.com
Address: 2603:1036:304:2852::2