shell:$ nslookup -timeout=2 -retry=1 'free.bitcoin.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
Name:	free.bitcoin.com
Address: 104.21.86.24
Name:	free.bitcoin.com
Address: 172.67.214.57
Name:	free.bitcoin.com
Address: 2606:4700:3033::ac43:d639
Name:	free.bitcoin.com
Address: 2606:4700:3032::6815:5618