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

Non-authoritative answer:
Name:	doubleclicktest.com
Address: 104.21.51.117
Name:	doubleclicktest.com
Address: 172.67.180.41
Name:	doubleclicktest.com
Address: 2606:4700:3036::ac43:b429
Name:	doubleclicktest.com
Address: 2606:4700:3030::6815:3375