Robtex

Up: 89.21.128.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 89.21.136.0/22
Down right: 89.21.140.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
89.21.136.53	A+PTR	proex1.promet.ru
89.21.136.76	A	orimimf.ru
89.21.136.76	A	mail.orimimf.ru
89.21.136.77	A	mail.orimicenter.ru
89.21.136.116	PTR	mail.glomax.ru
89.21.136.117	PTR	mail.freshtel.ru
89.21.136.236	PTR	minstm.gov.ru
89.21.136.245	A	mail.minstm.gov.ru
89.21.136.253	A+PTR	mail.sport-teams.ru
89.21.137.27	A+PTR	office.dokudrama.ru
89.21.137.27	A	tele-city.ru
89.21.137.82	PTR	mx.celticdance.ru
89.21.137.82	PTR	mx.lanstat.ru
89.21.137.84	PTR	mx.4rooms.ru
89.21.138.11	PTR	bsd.pravokonst.ru
89.21.138.98	PTR	hs-online.ru
89.21.138.98	PTR	hservice.ru
89.21.138.99	A+PTR	mail.hs-online.ru
89.21.138.99	A	mail.hservice.ru
89.21.138.122	A+PTR	mail.wood-s.com
89.21.138.162	PTR	mars.quadrium.ru
89.21.138.196	A	mx1.sofiadoors.com
89.21.138.198	A	mx1.sofiadoors.com
89.21.139.4	A	mail.xn--e1aaatbcaxdaeglcthh0q.xn--p1ai
89.21.139.4	A	mail.galaktikapro.ru
89.21.139.4	A	mail.xn--l1aedl9c.xn--p1ai
89.21.139.5	PTR	nota.tz.ru
89.21.139.12	A+PTR	voffice.tz.ru
89.21.139.12	A	tz.ru
89.21.139.16	A+PTR	outmail.tz.ru
89.21.139.16	A	mail.tz.ru
89.21.139.18	PTR	orbita-tp.ru
89.21.139.18	A	www.orbita-tp.ru
89.21.139.19	PTR	h2.tzmsk.ru
89.21.139.19	A	tz.ru
89.21.139.25	PTR	h2.tzmsk.ru
89.21.139.25	A	ipoligraf.ru
89.21.139.25	A	www.tzbel.ru
89.21.139.30	PTR	stalker-new.tz.ru
89.21.139.37	A	inmx2.tzmsk.ru
89.21.139.154	A	mail.alcars.ru
89.21.139.154	A	mail.atk-ltd.ru
89.21.139.165	PTR	mail.stirolplast.ru
89.21.140.10	PTR	atlantam.org
89.21.141.71	A	cm-computer.ru
89.21.141.71	A	veles-b2b.ru
89.21.141.72	A+PTR	mercury.veles.ru
89.21.141.73	A+PTR	www.veles.ru
89.21.141.73	A	veles.ru
89.21.141.91	PTR	accckm.ru
89.21.141.94	A	mx3.rbauto.ru
89.21.141.114	PTR	mail.avignon-auto.ru
89.21.141.115	A+PTR	mail.avignon-auto.ru
89.21.141.115	A	mail.vw-autonomy.ru
89.21.141.115	A	mail.seat-abrera.ru
89.21.141.116	PTR	mail.avignon-auto.ru
89.21.141.117	PTR	mail.avignon-auto.ru
89.21.141.120	PTR	mail.avignon-auto.ru
89.21.141.121	PTR	mail.avignon-auto.ru
89.21.141.122	PTR	mail.avignon-auto.ru
89.21.141.123	PTR	mail.avignon-auto.ru
89.21.143.34	PTR	mail.cspm.ru
89.21.143.37	A+PTR	exch.cspm.ru
89.21.143.37	A	mail.poli-mat.ru
89.21.143.37	A	mail.poligraph-club.com
89.21.143.107	A+PTR	mail.vet-center.ru
89.21.143.122	A+PTR	mx.ceramystica.ru
89.21.143.122	A	dbm.rcmos.ru
89.21.143.122	A	www.peronda.ru
89.21.143.130	A	sdo-akdgs.ru
89.21.143.130	A	www.sdo-akdgs.ru
89.21.143.131	A+PTR	mail.roskapstroy.com
89.21.143.131	A	mail.akdgs.ru
89.21.143.195	PTR	mail.spklabs.com