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

Non-authoritative answer:
Name:	gcdsdk.appsflyersdk.com
Address: 3.168.40.72
Name:	gcdsdk.appsflyersdk.com
Address: 3.168.40.27
Name:	gcdsdk.appsflyersdk.com
Address: 3.168.40.37
Name:	gcdsdk.appsflyersdk.com
Address: 3.168.40.94