shell:$ nslookup -timeout=2 -retry=1 'cdn.extramarks.id'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
Name:	cdn.extramarks.id
Address: 18.160.225.35
Name:	cdn.extramarks.id
Address: 18.160.225.53
Name:	cdn.extramarks.id
Address: 18.160.225.122
Name:	cdn.extramarks.id
Address: 18.160.225.38