shell:$ nslookup -timeout=2 -retry=1 'alt-304.youtube.com'
Server:		127.0.0.53
Address:	127.0.0.53#53

Non-authoritative answer:
Name:	alt-304.youtube.com
Address: 173.194.77.190
Name:	alt-304.youtube.com
Address: 173.194.77.93
Name:	alt-304.youtube.com
Address: 173.194.77.91
Name:	alt-304.youtube.com
Address: 173.194.77.136
Name:	alt-304.youtube.com
Address: 2607:f8b0:4023:401::5b
Name:	alt-304.youtube.com
Address: 2607:f8b0:4023:401::be
Name:	alt-304.youtube.com
Address: 2607:f8b0:4023:401::88
Name:	alt-304.youtube.com
Address: 2607:f8b0:4023:401::5d