Robtex

Up: 202.51.16.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 202.51.16.0/23
Down right: 202.51.18.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
202.51.16.1	A	aztec.gen.net.id
202.51.16.14	A	ns3.gen-id.net
202.51.16.196	A	gen.id
202.51.16.222	A	masmadmad.com
202.51.16.246	A+PTR	mail.user.id
202.51.16.246	A	smtp.gen.net.id
202.51.16.246	A	navajo.gen.net.id
202.51.16.250	A	internal2.gen.net.id
202.51.17.193	A	classicdiscomix.com
202.51.17.193	A	mx.classicdiscomix.com
202.51.17.202	A+PTR	ns3.gen.net.id
202.51.17.202	A	pascasarjana-ung.com
202.51.17.202	A	tidinet.co.id
202.51.17.206	A	classicdiscomix.com
202.51.17.206	A	mx.classicdiscomix.com
202.51.17.206	A	www.mobilwow.com
202.51.17.250	A+PTR	vpn.hotelkristal.co.id
202.51.18.134	A	gwbanget.com
202.51.18.134	A	www.gwbanget.com
202.51.18.134	A	guebanget.net
202.51.19.14	A+PTR	cherokee.gen.net.id
202.51.19.14	A	gen.id
202.51.19.14	A	www.gen.net.id
202.51.19.19	A	www.selebritiku.com
202.51.19.69	A	lpse.kbn.co.id
202.51.19.76	A	mail.hushtv.net
202.51.19.76	A	mail.hush-tv.com
202.51.19.130	PTR	ns.australbyna.co.id
202.51.19.131	A	australbyna.co.id
202.51.19.133	A	mail.bayarnanti.com
202.51.19.133	A	mail.kbu.co.id
202.51.19.133	A	mail.kbuautoparts.com
202.51.19.139	A	mail.kartunano.com
202.51.19.140	A	socidio.tv
202.51.19.141	A	www.satulagibar.com
202.51.19.146	PTR	webmail.nusindo.co.id
202.51.19.146	A	mail.nusindo.co.id
202.51.19.146	A	cluster.gwbanget.com
202.51.19.147	PTR	mailserver.nusindo.co.id
202.51.19.148	PTR	mail.e-motion.co.id
202.51.19.148	A	smtp.australbyna.co.id
202.51.19.148	A	antispam.gen.net.id
202.51.19.149	PTR	mail.macontent.co.id
202.51.19.149	A	griya-larasati.com
202.51.19.149	A	mail.primaintitrans.com
202.51.19.150	PTR	mail.kbn.co.id
202.51.19.155	A	plataran.cybermantra.net
202.51.19.155	A	dutasolution.com
202.51.19.214	A	dtms.nusindo.co.id
202.51.19.246	A	false.gwbanget.com