shell:$ nslookup -timeout=2 -retry=1 's1.u-on.to'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
Name:	s1.u-on.to
Address: 104.21.27.168
Name:	s1.u-on.to
Address: 172.67.169.147