shell:$ nslookup -timeout=2 -retry=1 'apc01.safelinks.protection.outlook.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
apc01.safelinks.protection.outlook.com	canonical name = eop-g2.tm-4.office.com.
Name:	eop-g2.tm-4.office.com
Address: 52.102.103.40
Name:	eop-g2.tm-4.office.com
Address: 52.102.103.23
Name:	eop-g2.tm-4.office.com
Address: 52.102.103.49
Name:	eop-g2.tm-4.office.com
Address: 52.102.103.41
Name:	eop-g2.tm-4.office.com
Address: 52.102.103.4
Name:	eop-g2.tm-4.office.com
Address: 52.102.103.52
Name:	eop-g2.tm-4.office.com
Address: 52.102.103.54
Name:	eop-g2.tm-4.office.com
Address: 52.102.103.27
Name:	eop-g2.tm-4.office.com
Address: 2a01:111:f403:9b80::365:f0be
Name:	eop-g2.tm-4.office.com
Address: 2a01:111:f403:9ba3::365:f0be
Name:	eop-g2.tm-4.office.com
Address: 2a01:111:f403:9b94::365:f0be
Name:	eop-g2.tm-4.office.com
Address: 2a01:111:f403:9baf::365:f0be
Name:	eop-g2.tm-4.office.com
Address: 2a01:111:f403:9b8e::365:f0be
Name:	eop-g2.tm-4.office.com
Address: 2a01:111:f403:9b8b::365:f0be
Name:	eop-g2.tm-4.office.com
Address: 2a01:111:f403:9b81::365:f0be
Name:	eop-g2.tm-4.office.com
Address: 2a01:111:f403:9bb6::365:f0be