Robtex

Up: 88.86.64.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 88.86.68.0/23
Down right: 88.86.70.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
88.86.68.2	PTR	office-ap200d-fxo.rn
88.86.68.82	PTR	mail.nnradio.ru
88.86.68.138	PTR	mail.zamavt.ru
88.86.68.186	PTR	infogroup.ru
88.86.68.190	PTR	mail1.sarmat-kia.ru
88.86.68.253	PTR	ns-gw.nnov.quantum.ru
88.86.68.254	PTR	ns.nnov.ptl.ru
88.86.68.254	A	83.80.95.nnov.ptl.ru
88.86.68.254	A	95.nnov.ptl.ru
88.86.69.40	PTR	40.69.86.88nnov.ptl.ru
88.86.69.66	A+PTR	mail.vkt.nnov.ru
88.86.69.66	A	vkt.nnov.ru
88.86.69.66	A	ns.vkt.nnov.ru
88.86.69.68	A	ns2.vkt.nnov.ru
88.86.69.68	A	mail2.vkt.nnov.ru
88.86.69.82	A+PTR	mail-server.prominvest-nn.ru
88.86.69.101	PTR	101.69.86.88nnov.ptl.ru
88.86.69.146	PTR	tech.bigvolga.ru
88.86.69.164	PTR	164.69.86.88nnov.ptl.ru
88.86.69.178	PTR	178.69.86.88nnov.ptl.ru
88.86.70.18	PTR	vstnn.ru
88.86.70.102	A+PTR	mail.smart-integrator.ru
88.86.70.102	A	mail.netz.su
88.86.70.102	A	mail.nring.ru
88.86.70.109	PTR	relay.aetp.ru
88.86.70.114	A+PTR	prostor.bizzone.biz
88.86.70.242	PTR	mail1.mantracvostok.com
88.86.70.242	A	mail1.mantracvostok.ru
88.86.70.242	A	mail2.mantracvostok.ru
88.86.70.254	A	nnov-hpool.quantum.ru
88.86.71.9	PTR	nnov-elekmash.71.quantum-gw.rn
88.86.71.22	PTR	mail.medkom.org
88.86.71.22	A	ns.gm-med.org
88.86.71.22	A	ns.gm-med.com
88.86.71.34	PTR	info.sokolnn.ru
88.86.71.34	A	sokolnn.com
88.86.71.34	A	info.sokolnn.com
88.86.71.43	PTR	bcast40x4.71.quantum.ru
88.86.71.43	A	grishenkov.ru
88.86.71.43	A	grishenkov.org
88.86.71.81	A+PTR	kenny.img.nnov.ru
88.86.71.81	A	mailserver.img.nnov.ru
88.86.71.158	A+PTR	prostor.radioholding.com
88.86.71.255	PTR	bcast255x4.71.quantum.ru