~$ nslookup archive.ubuntu.com
Server: 10.0.0.3
Address: 10.0.0.3#53
Non-authoritative answer:
Name: archive.ubuntu.com
Address: 91.189.91.83
Name: archive.ubuntu.com
Address: 91.189.91.82
Name: archive.ubuntu.com
Address: 185.125.190.36
Name: archive.ubuntu.com
Address: 185.125.190.39
Name: archive.ubuntu.com
Address: 91.189.91.81