Robtex

Up: 121.200.240.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 121.200.244.0/23
Down right: 121.200.246.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
121.200.244.37	A+PTR	mx1.lkfmedical.com
121.200.244.64	A	mail.trgwifi.com
121.200.244.66	A+PTR	smtp.broyland.com
121.200.244.153	A	theplace.com.sg
121.200.245.26	A+PTR	imail.renci.org.sg
121.200.245.28	A+PTR	success.renci.org.sg
121.200.245.28	A	attainment.renci.org.sg
121.200.245.34	A	ns1.bm-dns.com
121.200.245.50	A+PTR	lfs.lfs.edu.sg
121.200.245.148	A	mail.gmt.com.sg
121.200.245.153	A+PTR	mail.zenmtech.com
121.200.245.153	A	mail.zenmino.com
121.200.245.153	A	mail.daddyhobby.com
121.200.245.156	PTR	121-200-245-156.revdns.pacificinternet.com
121.200.245.156	A	daddyhobby.com
121.200.245.156	A	www.daddyhobby.com
121.200.245.158	A	www.zenmtech.com
121.200.245.158	A	zenmtech.com
121.200.245.170	A+PTR	exch01.hsc.com.sg
121.200.245.179	A	gw-group.com
121.200.245.194	PTR	ns3.mjmnetworks.com
121.200.245.194	PTR	mail.mjm.com.sg
121.200.245.194	PTR	ns1.mjm.com.sg
121.200.245.195	PTR	mta.mjm.com.sg
121.200.245.242	A+PTR	adpl-003.airdynamics.com.sg
121.200.245.243	A+PTR	adpl-005a.airdynamics.com.sg
121.200.246.190	A	ns2.towaemail.towa-ap.com.sg
121.200.246.190	A	peplinkwan2.towa-ap.com.sg
121.200.247.5	A	www.nttdata.sg
121.200.247.82	A	gw.innovalues.com
121.200.247.131	A	mail.justeducation.com
121.200.247.143	A	acmmail.acpanode.com.sg
121.200.247.145	A	acmmail.johnasia.com
121.200.247.147	A	acmmail.cwealth.com.sg
121.200.247.148	A	vms.aestechgroup.com
121.200.247.149	A	kf.sg
121.200.247.151	A	acmmail.mhwang.com
121.200.247.153	A	acmmail.rhemaevents.com
121.200.247.155	A	acmmail.mooreast.com
121.200.247.156	A	acmmail.achievement.com.sg
121.200.247.162	A	leckyweb.com
121.200.247.166	A	www.lecky.it
121.200.247.166	A	www.lecky.eu
121.200.247.166	A	lecky.it
121.200.247.167	A	lecky.it
121.200.247.195	A	mail.vivaitrust.com