shell:$ nslookup -timeout=2 -retry=1 'ruangguru-gam-cdn.ruangguru.com'
Server:		127.0.0.53
Address:	127.0.0.53#53

Non-authoritative answer:
ruangguru-gam-cdn.ruangguru.com	canonical name = image-optimizer.ruangguru.com.
Name:	image-optimizer.ruangguru.com
Address: 34.160.75.63