Robtex

Up: 103.242.8.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 103.242.12.0/23
Down right: 103.242.14.0/23

IP	Type	Hostname
103.242.12.125	A	speedtest.smtelemedia.com
103.242.12.134	A	mx01.digi.com.kh
103.242.13.13	A+PTR	ns1.supernet.com.kh
103.242.13.13	A	stmg.net.kh
103.242.13.14	A	smtelemedia.com
103.242.13.14	A	www.smtelemedia.com
103.242.13.90	A+PTR	ottmail.smtelemedia.com