Robtex

Up: 83.69.64.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 83.69.64.0/20
Down right: 83.69.80.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
83.69.64.10	PTR	mail.bast.ru
83.69.64.14	PTR	mail3.don-plaza.ru
83.69.64.62	A	mirror.rostovoblgaz.ru
83.69.64.65	A	mail6.tihlink.com
83.69.64.65	A	ns6.tihlink.com
83.69.65.2	A+PTR	inet11.marsat-south.ru
83.69.65.2	A	marsat-south.com
83.69.65.2	A	transagent.org
83.69.65.3	PTR	inet21.marsat-south.ru
83.69.65.7	PTR	as11.marsat-south.ru
83.69.65.72	A+PTR	flotnmtp.ru
83.69.65.72	A	portoflot.ru
83.69.65.72	A	fleetncsp.ru
83.69.65.162	PTR	mail.rusagrotrans.info
83.69.66.35	A+PTR	mail.tuapsermp.ru
83.69.66.35	A	ns.tuapsermp.ru
83.69.66.81	PTR	tuapseport.ru
83.69.66.81	A+PTR	proxy.tuapseport.ru
83.69.66.81	A	www.tuapseport.ru
83.69.66.134	PTR	mail-server.costarusa.ru
83.69.67.1	PTR	rs-nvk11ra.kttk.ru
83.69.67.2	PTR	rs-nvk22sa.kttk.ru
83.69.67.84	PTR	smtp1ttc.nle.ru
83.69.67.88	PTR	smtp2ttc.nle.ru
83.69.67.130	PTR	mx0.gcs-group.ru
83.69.67.162	PTR	tmn.efko.ru
83.69.67.178	A+PTR	mail.tk23.ru
83.69.68.8	A+PTR	lih.skppk.ru
83.69.68.8	A	ns2.skppk.ru
83.69.69.177	PTR	rostov.skppk.ru
83.69.69.177	A	ns1.skppk.ru
83.69.71.15	A	ns2.kanevskaya.ru
83.69.71.93	PTR	kanevskaya.tander.ru
83.69.74.75	PTR	mail.stis.su
83.69.76.186	A	aorassvet.com
83.69.76.186	A	progressagro.com
83.69.76.188	A	portal.ahkuban.ru
83.69.76.189	A+PTR	pochta.ahkuban.ru
83.69.76.189	PTR	mx01.ahkuban.ru
83.69.76.190	PTR	mx02.ahkuban.ru
83.69.76.190	A+PTR	pochta.ahkuban.ru
83.69.77.2	A+PTR	mail.inix.ru
83.69.77.2	A	ns2.inix.ru
83.69.77.6	A+PTR	ns1.inix.ru
83.69.77.37	PTR	vins1.vins-avto.ru
83.69.77.37	A	mail.vins-avto.ru
83.69.77.37	A	ns1.vins-avto.ru
83.69.81.250	A	tortuga-nebug.ru
83.69.81.250	A	mail.victoria-tuapse.ru
83.69.81.250	A	mail.drive-rus.ru
83.69.83.10	A	mail.bitrek.net
83.69.83.20	A	ns2.bitrek.ru
83.69.83.20	A	ns2.bitrek.net
83.69.83.229	A	mail.agroimport.org
83.69.84.212	PTR	ip212.ipkarta.ru
83.69.85.27	A+PTR	sip2.abcmebel.ru
83.69.85.29	PTR	mail2.annapotapova.com
83.69.85.33	A+PTR	mail.graninet.ru
83.69.85.136	A	www.rivc.ru
83.69.85.142	A+PTR	chamber.skzd.rzd.ru
83.69.85.226	PTR	acn.su
83.69.85.226	A	mail.skat-t.ru
83.69.85.230	PTR	mailserver.art-motors.su
83.69.85.230	A	mailserver.gk-artex.ru
83.69.85.230	A	mailserver.skm-seat.ru
83.69.86.2	PTR	mail.magcom.ru
83.69.86.3	PTR	ns.magcomm.ru
83.69.86.18	PTR	mail.rpmes.aaanet.ru
83.69.86.252	PTR	tih.ru
83.69.87.1	PTR	free87.kttk.ru
83.69.87.12	PTR	www.novtelecom.net
83.69.88.84	A	mail.kubantea.ru
83.69.88.84	A	autodiscover.kubantea.ru
83.69.89.76	A	server.k008.ru
83.69.92.65	PTR	www.gslr.ru
83.69.94.189	PTR	tmbss.ru
83.69.94.229	PTR	mail.mcc-novo.ru