Robtex

Up: 185.172.168.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 185.172.172.0/23
Down right: 185.172.174.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
185.172.172.196	A+PTR	checkstack.net
185.172.172.196	A	mail.checkstack.net
185.172.172.196	A	ns1.checkstack.net
185.172.172.197	PTR	wishmotive.com
185.172.172.198	PTR	roundfame.com
185.172.172.200	A+PTR	neutraltap.com
185.172.172.200	A	ns2.diverange.net
185.172.172.200	A	ns1.neutraltap.com
185.172.172.201	PTR	diverange.net
185.172.172.202	PTR	evenscout.com
185.172.172.203	PTR	halfbound.net
185.172.172.204	A+PTR	afterpick.net
185.172.172.204	A	ns1.afterpick.net
185.172.172.204	A	mail.afterpick.net
185.172.172.205	PTR	brightset.net
185.172.172.206	PTR	trustmixer.com
185.172.172.210	A+PTR	uppermist.com
185.172.172.210	A	mail.uppermist.com
185.172.172.210	A	ns1.uppermist.com
185.172.172.211	PTR	multicross.net
185.172.172.211	A	ns2.uppermist.com
185.172.172.214	A+PTR	hillclass.net
185.172.172.214	A	ns2.wakemoment.com
185.172.172.214	A	ns1.hillclass.net
185.172.172.215	PTR	wakemoment.com
185.172.172.220	A+PTR	detailitem.com
185.172.172.220	A	mail.detailitem.com
185.172.172.220	A	ns1.detailitem.com
185.172.172.221	PTR	zonehandy.net
185.172.172.221	A	ns2.hourlodge.com
185.172.172.222	PTR	hourlodge.com
185.172.172.228	A+PTR	leapsquare.net
185.172.172.228	A	ns2.overfreeze.com
185.172.172.228	A	mail.leapsquare.net
185.172.172.229	PTR	overfreeze.com
185.172.172.230	PTR	taylorsuit.com
185.172.172.231	PTR	arrayport.net
185.172.172.234	A+PTR	gustreal.com
185.172.172.234	A	mail.gustreal.com
185.172.172.234	A	ns2.podiumsub.com
185.172.172.235	PTR	podiumsub.com
185.172.172.237	PTR	hyperdash.net
185.172.172.237	A	ns2.iconstill.com
185.172.172.238	A+PTR	iconstill.com
185.172.172.238	A	ns1.iconstill.com
185.172.172.238	A	mail.iconstill.com
185.172.172.242	A+PTR	justfloor.net
185.172.172.242	A	ns2.partslide.com
185.172.172.242	A	ns1.justfloor.net
185.172.172.243	PTR	partslide.com
185.172.172.246	A+PTR	dawnpit.com
185.172.172.246	A	mail.dawnpit.com
185.172.172.246	A	ns2.hopemerge.com
185.172.172.247	PTR	hopemerge.com
185.172.173.72	A+PTR	plotwhite.com
185.172.173.72	A	ns1.plotwhite.com
185.172.173.72	A	ns2.dragscout.net
185.172.173.73	PTR	dragscout.net
185.172.173.76	PTR	angelscout.net
185.172.173.76	A	ns2.minorheat.com
185.172.173.77	A+PTR	minorheat.com
185.172.173.77	A	ns1.minorheat.com
185.172.173.77	A	mail.minorheat.com