Robtex

Up: 78.31.72.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 78.31.72.0/25
Down right: 78.31.72.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
78.31.72.2	A+PTR	ns2.nlink.ru
78.31.72.5	A+PTR	ns3.nlink.ru
78.31.72.5	A	mail.on-telecom.ru
78.31.72.6	PTR	ns4.nlink.ru
78.31.72.6	A	rkgt.ru
78.31.72.6	A	electrod.org
78.31.72.23	A+PTR	mail.media62.ru
78.31.72.55	PTR	server-m.techkomplect.ru
78.31.72.55	A	freez.tk-r.ru
78.31.72.55	A	smtp.tk-r.ru
78.31.72.57	PTR	grk-avto.nlink.ru
78.31.72.83	PTR	mail.avtovostok.ru
78.31.72.83	A	mail.505055.ru
78.31.72.125	A	office.basegroup.ru
78.31.72.138	A	ryaz.dmbasis.ru
78.31.72.147	A+PTR	mail.guag62.ru
78.31.72.147	A	guag62.ru
78.31.72.164	A+PTR	nix.rzn.ru
78.31.72.164	A	nix62.ru
78.31.72.164	A	nix-ryazan.ru
78.31.72.186	A	inside.rokb.ru
78.31.72.204	A+PTR	nlink.argo-tours.ru
78.31.72.204	A	linux.cryptoanalytics.org
78.31.72.204	A	svn.argo-tours.ru