shell:$ nslookup -timeout=2 -retry=1 'vn-oc.ruangguru.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
vn-oc.ruangguru.com	canonical name = d1bmcces0j3vlc.cloudfront.net.
Name:	d1bmcces0j3vlc.cloudfront.net
Address: 13.32.241.94
Name:	d1bmcces0j3vlc.cloudfront.net
Address: 13.32.241.87
Name:	d1bmcces0j3vlc.cloudfront.net
Address: 13.32.241.29
Name:	d1bmcces0j3vlc.cloudfront.net
Address: 13.32.241.21
Name:	d1bmcces0j3vlc.cloudfront.net
Address: 2600:9000:2007:3800:1:34bd:6c00:93a1
Name:	d1bmcces0j3vlc.cloudfront.net
Address: 2600:9000:2007:2e00:1:34bd:6c00:93a1
Name:	d1bmcces0j3vlc.cloudfront.net
Address: 2600:9000:2007:6c00:1:34bd:6c00:93a1
Name:	d1bmcces0j3vlc.cloudfront.net
Address: 2600:9000:2007:1000:1:34bd:6c00:93a1
Name:	d1bmcces0j3vlc.cloudfront.net
Address: 2600:9000:2007:b400:1:34bd:6c00:93a1
Name:	d1bmcces0j3vlc.cloudfront.net
Address: 2600:9000:2007:6600:1:34bd:6c00:93a1
Name:	d1bmcces0j3vlc.cloudfront.net
Address: 2600:9000:2007:6000:1:34bd:6c00:93a1
Name:	d1bmcces0j3vlc.cloudfront.net
Address: 2600:9000:2007:8c00:1:34bd:6c00:93a1