Robtex

Up: 193.0.168.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 193.0.172.0/23
Down right: 193.0.174.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
193.0.172.18	PTR	host.posthosting.org
193.0.172.18	A	posthosting.org
193.0.172.21	A+PTR	radon2.zydata.ru
193.0.172.21	A	zydata.ru
193.0.172.22	A+PTR	helix2.zydata.ru
193.0.172.22	A	zydata.ru
193.0.172.25	PTR	ws172-25.zydata.ru
193.0.172.25	A	syllabear.zydata.ru
193.0.172.27	PTR	titan.zydata.ru
193.0.172.34	PTR	ws172-34.zydata.ru
193.0.172.34	A	tarvos.zydata.ru
193.0.172.63	A+PTR	argon2.zydata.ru
193.0.172.173	PTR	ws172-173.zydata.ru
193.0.172.223	PTR	ws172-223.zydata.ru
193.0.172.223	A	lutechsrl.com
193.0.172.223	A	zyxel-ls.com
193.0.173.76	A	ws173-76.zydata.ru
193.0.174.22	A+PTR	neon2.zydata.ru
193.0.174.22	A	www.zydata.ru
193.0.174.23	A+PTR	mail2.zydata.ru
193.0.174.35	A+PTR	ws174-35.zydata.ru
193.0.174.37	A	mx.zy-stage.vps-private.net
193.0.174.37	A	zy-stage.vps-private.net
193.0.174.45	PTR	ws174-45.zydata.ru
193.0.174.45	A	helene.zyxel.ru
193.0.174.45	A	web.zyxel.ru
193.0.174.46	PTR	ws174-46.zydata.ru
193.0.174.61	A+PTR	crypton.zydata.ru
193.0.174.66	A+PTR	ws174-66.zydata.ru
193.0.174.66	A	www.dkvnukovo.ru
193.0.174.66	A	ns.ndl.ru
193.0.174.72	PTR	ws174-72.zydata.ru
193.0.174.99	A	t1.ndm9.net
193.0.174.99	A	t1.ndm9.xyz
193.0.174.130	PTR	ws174-130.zydata.ru
193.0.174.140	A	ws174-140.zydata.ru
193.0.174.142	A	ws174-142.zydata.ru
193.0.174.167	A+PTR	ws174-167.zydata.ru
193.0.174.172	A+PTR	ws174-172.zydata.ru
193.0.174.234	A	ws174-234.zydata.ru
193.0.174.238	A	ws174-238.zydata.ru
193.0.174.243	A	ws174-243.zydata.ru
193.0.175.22	A+PTR	tantal2.zydata.ru
193.0.175.22	A	tantal2.xdata.ru
193.0.175.23	A+PTR	relay2.zydata.ru
193.0.175.45	A	pluton.zydata.ru
193.0.175.67	A+PTR	ws175-67.zydata.ru
193.0.175.158	PTR	ws175-158.zydata.ru
193.0.175.158	A	balinda.zydata.ru