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

Non-authoritative answer:
Name:	learn.dropbox.com
Address: 18.172.134.19
Name:	learn.dropbox.com
Address: 18.172.134.56
Name:	learn.dropbox.com
Address: 18.172.134.85
Name:	learn.dropbox.com
Address: 18.172.134.46