Robtex

Up: 185.15.184.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 185.15.188.0/23
Down right: 185.15.190.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
185.15.189.10	PTR	host-10.185.15.189.0.0xffffff00.sterling.stercom.ru
185.15.189.10	A	ns3.everdy.ru
185.15.189.111	A+PTR	mail.npome.ru
185.15.189.111	A	npome.ru
185.15.189.111	A	www.npome.ru
185.15.189.120	A+PTR	office.pointec.ru
185.15.189.120	A	smtp.odessacable.ru
185.15.189.120	A	mail.odessacable.ru
185.15.189.135	A	zimbra.doraeroproekt.ru
185.15.189.151	A	gate.siaapi.ru
185.15.189.205	PTR	host-205.185.15.189.0.0xffffff00.sterling.stercom.ru
185.15.190.10	PTR	smtp.elsiel.ru
185.15.190.10	A	smtp.lcl.su
185.15.190.10	A	elsiel.ru
185.15.190.11	PTR	smtp.elsiel.ru
185.15.190.34	A+PTR	mxa.siamed.ru
185.15.190.34	A	ns.siamed.ru
185.15.190.34	A	gw2.siamed.ru
185.15.190.38	PTR	host-38.185.15.190.0.0xffffff00.sterling.stercom.ru
185.15.190.38	A	mapteka.ru
185.15.190.61	A+PTR	fildept.siaint.ru
185.15.190.61	A	mx2.fildept.siaint.ru
185.15.190.61	A	ns2.siaint.ru
185.15.190.66	PTR	soap.pr-t.ru
185.15.190.66	A	www.pr-t.ru
185.15.190.70	PTR	mail.shiftrus.ru
185.15.190.70	A	www.pr-t.ru
185.15.190.70	A	www.clockw.ru
185.15.190.71	PTR	soap.pr-t.ru
185.15.190.73	A	mail.pr-t.ru
185.15.190.77	A+PTR	mail.inkopremium.ru
185.15.190.90	A	mail.ronova.ru
185.15.190.100	A+PTR	mail1.oao-tmz.ru
185.15.190.118	A	ns1.ustco.ru
185.15.190.126	A	m2.u-st.ru
185.15.190.126	A	m2.ust-co.ru
185.15.190.135	A+PTR	mail.alcotester.ru
185.15.190.146	PTR	mail.evrotehnology.ru
185.15.190.146	A	sts-holding.ru
185.15.190.146	A	evrotehnology.ru
185.15.190.162	A	mail.npomolniya.ru
185.15.191.255	PTR	host-255.185.15.191.0.0xffffff00.sterling.stercom.ru