shell:$ nslookup -timeout=2 -retry=1 'core.ac.uk'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
Name:	core.ac.uk
Address: 104.21.20.56
Name:	core.ac.uk
Address: 172.67.191.205
Name:	core.ac.uk
Address: 2606:4700:3030::6815:1438
Name:	core.ac.uk
Address: 2606:4700:3037::ac43:bfcd