Robtex

Up: 103.21.200.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 103.21.204.0/23
Down right: 103.21.206.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
103.21.204.20	A+PTR	tokogoban.com
103.21.204.20	A	mail.tokogoban.com
103.21.204.20	A	andhikaspramana.my.id
103.21.204.21	PTR	swanten.com
103.21.204.21	PTR	metadata.id
103.21.204.21	A	mail.swanten.com
103.21.204.22	PTR	batammeximopub.com
103.21.204.22	PTR	geweldlintasantara.com
103.21.204.22	PTR	kursuz.com
103.21.204.25	A	email.permana.net.id
103.21.204.26	A+PTR	mail.permana.net.id
103.21.204.50	PTR	ns2.permana.net.id
103.21.204.86	PTR	204.86.customer.permana-as131746
103.21.204.99	A	mail.montigoresorts.com
103.21.204.186	A	ns1.permana.net.id
103.21.204.189	A	permana.net.id
103.21.205.34	PTR	205.34.customer.permana-as131746
103.21.205.101	PTR	ns2.kominfokepri.net
103.21.205.101	A	ns2.kepriprov.go.id
103.21.205.103	A	ns2.kominfokepri.net
103.21.205.119	A	oupuchina.com
103.21.205.201	PTR	205.201.permananet-as131746
103.21.205.201	A	mail.permana.net.id
103.21.205.201	A	mail.medianusa.net
103.21.205.205	A+PTR	dns1.permana.net.id
103.21.206.57	A	alfancloud.com
103.21.206.57	A	siantaronline.net
103.21.206.58	A	pdamtirtauli.com
103.21.206.58	A	www.pdamtirtauli.com
103.21.206.133	PTR	206.133.customer.permana-as131746
103.21.206.133	A	panel.pnl.ac.id
103.21.206.210	PTR	206.210.permana-as131746
103.21.206.227	PTR	206.227.permana-as131746
103.21.206.227	A	kunkerindo.com
103.21.206.228	PTR	vhm.permana.net.id
103.21.206.228	A	advertinkcreative.com
103.21.206.242	A	ns2.permana.net.id
103.21.207.19	PTR	207.19.permana-as131746
103.21.207.54	PTR	207.54.customer.permana-as131746
103.21.207.54	A	787506f3603a.sn.mynetname.net
103.21.207.92	PTR	207.92.customer.permananet-as131746
103.21.207.92	A	ns3.kominfokepri.net