shell:$ nslookup -timeout=2 -retry=1 'chartboost.com'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
Name:	chartboost.com
Address: 54.192.55.56
Name:	chartboost.com
Address: 54.192.55.36
Name:	chartboost.com
Address: 54.192.55.126
Name:	chartboost.com
Address: 54.192.55.124