Robtex

Up: 31.173.0.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 31.173.32.0/20
Down right: 31.173.48.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
31.173.32.2	PTR	clients-32.173.31.2.misp.ru
31.173.32.41	A	mail.azotvzryv.ru
31.173.34.209	PTR	clients-34.173.31.209.misp.ru
31.173.34.209	A	epdg.epc.mnc002.mcc250.pub.3gppnetwork.org
31.173.34.226	A	ppmprop.ru
31.173.34.226	A	arusav.ru
31.173.34.226	A	dobrovasgoes.ru
31.173.34.227	A	ppmprop.ru
31.173.34.227	A	arusav.ru
31.173.34.227	A	dobrovasgoes.ru
31.173.35.73	A+PTR	gateway.matic.ru
31.173.35.73	A	mail.matic.ru
31.173.35.97	PTR	clients-35.173.31.97.misp.ru
31.173.35.97	A	mail2.paks.ru
31.173.35.205	PTR	clients-35.173.31.205.misp.ru
31.173.35.218	PTR	clients-35.173.31.218.misp.ru
31.173.35.218	A	post.tgs.ru
31.173.37.9	PTR	clients-37.173.31.9.misp.ru
31.173.37.40	PTR	clients-37.173.31.40.misp.ru
31.173.37.40	A	www.elicat.com.ua
31.173.37.41	A+PTR	cc.diamanit.com
31.173.37.41	A	scansens.de
31.173.37.41	A	scansens.com
31.173.37.73	A+PTR	mx3.gpte.ru
31.173.37.73	A+PTR	mx3.mrte.ru
31.173.37.73	A+PTR	mx3.spb.gpte.ru
31.173.37.90	PTR	clients-37.173.31.90.misp.ru
31.173.37.90	A	ns2.uni-taxi.ru
31.173.37.154	PTR	clients-37.173.31.154.misp.ru
31.173.38.1	A	mail.ralf.ru
31.173.38.114	PTR	clients-38.173.31.114.misp.ru
31.173.38.115	PTR	clients-38.173.31.115.misp.ru
31.173.38.116	PTR	clients-38.173.31.116.misp.ru
31.173.38.117	A	mail.tourinfo-rfr.ru
31.173.38.117	A	tourinfo-rfr.ru
31.173.38.227	PTR	zakupki.gov.ru
31.173.38.227	A	old.zakupki.gov.ru
31.173.38.227	A	www.zakupki.gov.ru
31.173.38.228	PTR	bus.gov.ru
31.173.38.229	A+PTR	int223.zakupki.gov.ru
31.173.38.230	A+PTR	bi223.zakupki.gov.ru
31.173.39.15	PTR	mail.rdi-kvant.ru
31.173.39.16	PTR	rdi-kvant.ru
31.173.39.22	PTR	clients-39.173.31.22.misp.ru
31.173.39.66	A	e-disclosure.ru
31.173.39.66	A	www.e-disclosure.ru
31.173.39.67	A	ad.interfax.ru
31.173.39.89	PTR	clients-39.173.31.89.misp.ru
31.173.39.89	A	ns1.izvestia.ru
31.173.39.96	PTR	clients-39.173.31.96.misp.ru
31.173.39.96	A	izvestia.com
31.173.39.96	A	inauka.ru
31.173.39.99	PTR	mail.izvestia.ru
31.173.39.197	A	server.kit-sv.ru
31.173.41.242	A+PTR	mx2.hals-development.ru
31.173.41.242	A	mx2.hotelpeking.ru
31.173.41.242	A	iron2.hals-development.ru
31.173.41.244	PTR	clients-41.173.31.244.misp.ru
31.173.43.41	A	vkmobile.me
31.173.43.129	PTR	clients-43.173.31.129.misp.ru
31.173.43.129	A	ticket.pfc-cska.com
31.173.43.169	A	moumail.mou.roskazna.ru
31.173.43.169	A	mou.roskazna.ru
31.173.43.178	PTR	clients-43.173.31.178.misp.ru
31.173.44.17	A+PTR	mail.trivoli.su
31.173.44.17	A	mail.trivoli.ru
31.173.44.113	PTR	clients-44.173.31.113.misp.ru
31.173.44.113	A	wan1.bestly.ru
31.173.44.121	A	mail2.afb-consulting.com
31.173.44.165	A+PTR	mailgate.sdcecom.ru
31.173.44.165	PTR	mailserver.sdcecom.ru
31.173.44.194	PTR	clients-44.173.31.194.misp.ru
31.173.44.194	A	mail.russcollector.ru
31.173.44.237	PTR	mail.rgpburo.ru
31.173.44.237	A	rgpburo.ru
31.173.44.237	A	rgpburo.net
31.173.45.67	PTR	owa.elbcp.com
31.173.45.67	A	owa1.elbcp.com
31.173.45.101	PTR	clients-45.173.31.101.misp.ru
31.173.46.3	PTR	mail.k-flex.ru
31.173.46.3	A	mf-mx.k-flex.club
31.173.46.11	PTR	clients-46.173.31.11.misp.ru
31.173.46.11	A	simpleclever.ru
31.173.46.11	A	k-flex.ru
31.173.46.12	PTR	clients-46.173.31.12.misp.ru
31.173.46.12	A	k-flex.ru
31.173.46.12	A	efflex.net
31.173.46.157	PTR	clients-46.173.31.157.misp.ru
31.173.46.157	A	mx.mps.org.ru
31.173.47.81	PTR	clients-47.173.31.81.misp.ru
31.173.47.81	A	evro-portal.com
31.173.47.129	A	mail.hayat.com.ru
31.173.47.169	PTR	clients-47.173.31.169.misp.ru
31.173.48.44	A	mailsrv.sstsr.ru
31.173.48.55	PTR	clients-48.173.31.55.misp.ru
31.173.48.57	PTR	clients-48.173.31.57.misp.ru
31.173.48.61	A+PTR	mail.jtbank.ru
31.173.50.17	PTR	clients-50.173.31.17.misp.ru
31.173.50.17	A	mail2.novoecorus.ru
31.173.50.17	A	mail2.avalongroup.ru
31.173.55.235	A	minvostokrazvitia.ru
31.173.55.235	A	minvr.gov.ru
31.173.55.235	A	minvr.ru
31.173.55.245	A	mail.minvr.ru
31.173.56.89	A	mail1.limonte.ru
31.173.56.194	A	msk-lk-ns01.megafon.ru
31.173.56.203	PTR	clients-56.173.31.203.misp.ru
31.173.56.203	A	wildcard-lk.megafon.ru
31.173.56.203	A	api.megafon.ru
31.173.56.212	PTR	clients-56.173.31.212.misp.ru
31.173.56.212	A	wildcard-lk.megafon.ru
31.173.56.212	A	api.megafon.ru
31.173.58.6	PTR	clients-58.173.31.6.misp.ru
31.173.58.123	PTR	clients-58.173.31.123.misp.ru
31.173.59.65	A	vpn.msgr.ru
31.173.62.17	A	mail0.agt-agency.ru
31.173.62.17	A	mail.agt-agency.ru
31.173.62.18	A	ns3.4a.ru
31.173.62.24	A+PTR	mail0.fmh.su
31.173.62.24	PTR	mail1.fmh.su
31.173.63.141	PTR	clients-63.173.31.141.misp.ru
31.173.63.141	A	minvr.ru
31.173.63.141	A	www.minvr.ru