Robtex

Up: 81.9.0.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 81.9.0.0/21
Down right: 81.9.8.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
81.9.0.26	PTR	hst0.doublesquare.com
81.9.0.26	A	relay.doublesquare.com
81.9.0.26	A	xn--80aamndutiyh.xn--p1ai
81.9.0.54	A	ringphonia.com
81.9.0.55	A	64.funtonia.com
81.9.0.55	A	155.funtonia.com
81.9.0.55	A	fantonia.com
81.9.0.66	A	www.vikingspa.ru
81.9.0.66	A	luxtag.ru
81.9.0.66	A	admiralpools.ru
81.9.0.86	A	ds019.eltel.net
81.9.0.94	A	www.tecont.com
81.9.0.94	A	tecont.com
81.9.0.130	A+PTR	relay.eltel.net
81.9.2.6	A	81.9.236-static.reverse.softlayer.com
81.9.2.34	A	ds026.eltel.net
81.9.2.98	A+PTR	ds032.eltel.net
81.9.3.98	PTR	meta.tomstudio.ru
81.9.3.98	A	www.deep-angel.com
81.9.3.98	A	www.m-oils.ru
81.9.3.131	A+PTR	ds008.eltel.net
81.9.3.146	A	thunder.webdo.ru
81.9.3.195	A	softwaredesign.ru
81.9.3.195	A	software-design.ru
81.9.3.198	A	relay66.dsi.ru
81.9.3.226	A+PTR	climonit.eltel.net
81.9.3.234	PTR	mx5.rrt.ru
81.9.3.242	A	relay.nwgservice.ru
81.9.3.242	A	relay.gcdevelop.ru
81.9.3.242	A	ns2.gcconsulting.ru
81.9.4.3	A	dss.eltel.net
81.9.4.4	A+PTR	cncc.eltel.net
81.9.4.34	A	ds034.eltel.net
81.9.4.66	A+PTR	ds012.eltel.net
81.9.4.226	PTR	lolihost.com
81.9.5.130	PTR	nordhost.biz
81.9.5.194	A+PTR	ds001.eltel.net
81.9.5.196	A	server2.viahost.ru
81.9.5.197	PTR	server3.viahost.ru
81.9.5.198	A	server4.viahost.ru
81.9.5.199	A	server5.viahost.ru
81.9.5.208	A	ns2.pravoverie.ru
81.9.5.210	PTR	tenneta.ru
81.9.5.224	PTR	server.binargi.biz
81.9.5.226	A	ds017.eltel.net
81.9.6.2	A	ds023.eltel.net
81.9.7.2	A+PTR	lipa.eltel.net
81.9.7.14	A+PTR	netroxsc.ru
81.9.7.14	A	intensi.ru
81.9.7.14	A	www.netroxsc.ru
81.9.7.34	PTR	mail.funds-custody.ru
81.9.7.34	A	mail.fundscustody.ru
81.9.7.34	A	mail.funds-custody.com
81.9.7.37	PTR	web2.funds-custody.ru
81.9.7.37	A	ns1.funds-custody.com
81.9.7.37	A	fundscustody.ru
81.9.7.67	A	ds101.eltel.net
81.9.7.130	A	ds121.eltel.net
81.9.7.202	PTR	coppelius.digitalsecurity.ru
81.9.7.202	A	iso27001.ru
81.9.7.210	A	hometest.eltel.net
81.9.7.210	A	rubycom.eltel.net
81.9.7.210	A	m-pallki.ru
81.9.7.211	PTR	spam-mark.eltel.net
81.9.7.226	A	ds114.eltel.net
81.9.8.2	A	ds108.eltel.net
81.9.8.162	A	ds103.eltel.net
81.9.9.13	PTR	fe-0-3.ms.softspb.com
81.9.9.13	A	hefest.spbsoftwarehouse.com
81.9.9.17	PTR	t-0-2.elt.softspb.com
81.9.10.2	A+PTR	smtp.fullspace.ru
81.9.10.11	A+PTR	ns3.eltel.net
81.9.10.25	PTR	mx1.brocompany.net
81.9.11.170	A	survey-studio.ru
81.9.11.170	A	survey-studio.com
81.9.12.3	PTR	jupiter.host900.com
81.9.12.3	A+PTR	rh.eltel.net
81.9.12.98	A+PTR	ds022.eltel.net