shell:$ nslookup -timeout=2 -retry=1 'ns1.btc.bw'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
Name:	ns1.btc.bw
Address: 168.167.168.34
Name:	ns1.btc.bw
Address: 2c0f:ff00:0:6::2
Name:	ns1.btc.bw
Address: 2c0f:ff00:0:6::4