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.mira.tm.svc.cloud.microsoft.
eop.mira.tm.svc.cloud.microsoft	canonical name = acdcatm.eop.mira.tm.svc.cloud.microsoft.
acdcatm.eop.mira.tm.svc.cloud.microsoft	canonical name = eop-mrc-ww-perf.tm-4.office.com.
Name:	eop-mrc-ww-perf.tm-4.office.com
Address: 52.102.103.23
Name:	eop-mrc-ww-perf.tm-4.office.com
Address: 52.102.103.22
Name:	eop-mrc-ww-perf.tm-4.office.com
Address: 52.102.103.42
Name:	eop-mrc-ww-perf.tm-4.office.com
Address: 52.102.103.3
Name:	eop-mrc-ww-perf.tm-4.office.com
Address: 52.102.103.25
Name:	eop-mrc-ww-perf.tm-4.office.com
Address: 52.102.103.1
Name:	eop-mrc-ww-perf.tm-4.office.com
Address: 52.102.103.24
Name:	eop-mrc-ww-perf.tm-4.office.com
Address: 52.102.103.53
Name:	eop-mrc-ww-perf.tm-4.office.com
Address: 2a01:111:f403:9ba5::365:f0be
Name:	eop-mrc-ww-perf.tm-4.office.com
Address: 2a01:111:f403:9b98::365:f0be
Name:	eop-mrc-ww-perf.tm-4.office.com
Address: 2a01:111:f403:9b97::365:f0be
Name:	eop-mrc-ww-perf.tm-4.office.com
Address: 2a01:111:f403:9b85::365:f0be
Name:	eop-mrc-ww-perf.tm-4.office.com
Address: 2a01:111:f403:9b8d::365:f0be
Name:	eop-mrc-ww-perf.tm-4.office.com
Address: 2a01:111:f403:9bae::365:f0be
Name:	eop-mrc-ww-perf.tm-4.office.com
Address: 2a01:111:f403:9b8a::365:f0be
Name:	eop-mrc-ww-perf.tm-4.office.com
Address: 2a01:111:f403:9b92::365:f0be