shell:$ nslookup -timeout=2 -retry=1 'ping.chartbeat.net'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
Name:	ping.chartbeat.net
Address: 54.208.220.81
Name:	ping.chartbeat.net
Address: 18.208.237.182
Name:	ping.chartbeat.net
Address: 3.222.175.239
Name:	ping.chartbeat.net
Address: 3.213.203.115
Name:	ping.chartbeat.net
Address: 54.166.2.0
Name:	ping.chartbeat.net
Address: 44.215.144.162
Name:	ping.chartbeat.net
Address: 13.223.121.152
Name:	ping.chartbeat.net
Address: 54.173.19.87