Robtex

Up: 91.203.80.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 91.203.80.0/23
Down right: 91.203.82.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
91.203.80.5	A	mail.remos-dubna.ru
91.203.80.5	A	mail.ecom-ang.ru
91.203.80.5	A	www.like-tv.tv
91.203.80.7	PTR	ns1.tmpk.ru
91.203.80.8	PTR	ns3.tmpk.ru
91.203.80.8	A	kolya.tmpk.net
91.203.80.8	A	eksten.ru
91.203.80.10	PTR	bras-1.tmpk.net
91.203.80.11	PTR	mail.webdubna.ru
91.203.80.12	PTR	mail.webdubna.ru
91.203.80.13	PTR	mail.webdubna.ru
91.203.80.13	A	mail.dubnadent.ru
91.203.80.13	A	mail.dubna.org.ru
91.203.80.24	A+PTR	mouse.webdubna.ru
91.203.80.25	A	aligin.com
91.203.80.28	A+PTR	rollan.tmpk.net
91.203.80.40	PTR	infanet.su
91.203.80.41	A+PTR	billing.tmpk.net
91.203.80.41	A	bill1.tmpk.net
91.203.80.41	A	bill.tmpk.net
91.203.80.45	A	www.mycam.ru
91.203.80.50	A+PTR	storage.tmpk.net
91.203.80.53	A+PTR	ipi.tmpk.net
91.203.80.54	A+PTR	web.tmpk.net
91.203.80.54	A	service.tmpk.net
91.203.80.54	A	stat.tmpk.net
91.203.80.55	PTR	naukograd-dubna.ru
91.203.80.61	A	rubicon-shoes.com
91.203.80.170	PTR	relay.alpintech.ru
91.203.81.66	A+PTR	relay.alpintech.ru
91.203.81.66	A	webmail.alpintech.ru
91.203.81.66	A	alpintech.ru
91.203.81.141	A	mail.melz-elt.ru
91.203.81.141	A	melz-elt.ru
91.203.81.150	A	volax.info
91.203.81.150	A	daemonology.biz
91.203.81.150	A	volchenkov.info
91.203.81.156	A	webmast.org
91.203.81.156	A	art-www.com
91.203.81.156	A	web-brains.ru
91.203.81.164	PTR	taldomcrb.ru
91.203.81.165	A	eternity-world.ru
91.203.82.7	A+PTR	ns2.tmpk.ru
91.203.82.7	A	ns2.tmpk.net
91.203.82.132	A	ainetdinov.org
91.203.82.132	A	mail.ainetdinov.org
91.203.82.135	A	ntpdubna.ru
91.203.82.249	A+PTR	mail.amgokna.ru
91.203.82.250	A+PTR	ptr.gardnerporcelain.com
91.203.82.250	A	mx-t.gardnerporcelain.com
91.203.82.254	A	krv.su
91.203.82.254	A	chekker.ru
91.203.82.254	A	nostroma.ru
91.203.83.2	PTR	mail.ayona.com
91.203.83.2	A	ayona.ru
91.203.83.2	A	mail.ayona.ru
91.203.83.170	PTR	mail.q-systems.ru
91.203.83.210	A	mx1.artfab.ru
91.203.83.211	A+PTR	mx1.artfab.ru
91.203.83.211	A	mx2.artfab.ru
91.203.83.218	A+PTR	mail.rustmash.ru
91.203.83.218	A+PTR	zaprudnya.rustmash.ru
91.203.83.218	A	m.rustmash.ru