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

Non-authoritative answer:
Name:	mtnconversions.whappsflyer.com
Address: 172.66.0.156
Name:	mtnconversions.whappsflyer.com
Address: 162.159.140.158