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

Non-authoritative answer:
Name:	opr.as
Address: 104.21.17.174
Name:	opr.as
Address: 172.67.177.186
Name:	opr.as
Address: 2606:4700:3031::ac43:b1ba
Name:	opr.as
Address: 2606:4700:3030::6815:11ae