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

Non-authoritative answer:
Name:	arcgisonline.com
Address: 3.213.61.32
Name:	arcgisonline.com
Address: 34.238.206.92
Name:	arcgisonline.com
Address: 34.201.194.37