shell:$ nslookup -timeout=2 -retry=1 'autodiscover.sales.transunion.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
autodiscover.sales.transunion.com	canonical name = autodiscover.outlook.com.
autodiscover.outlook.com	canonical name = atod-g2.tm-4.office.com.
atod-g2.tm-4.office.com	canonical name = autod.ms-acdc-autod.office.com.
Name:	autod.ms-acdc-autod.office.com
Address: 52.96.79.200
Name:	autod.ms-acdc-autod.office.com
Address: 52.96.157.56
Name:	autod.ms-acdc-autod.office.com
Address: 52.96.79.136
Name:	autod.ms-acdc-autod.office.com
Address: 52.96.79.56
Name:	autod.ms-acdc-autod.office.com
Address: 2603:1036:304:2854::8
Name:	autod.ms-acdc-autod.office.com
Address: 2603:1036:304:81c::8
Name:	autod.ms-acdc-autod.office.com
Address: 2603:1036:304:2850::8
Name:	autod.ms-acdc-autod.office.com
Address: 2603:1036:304:3407::8