Robtex

Up: 92.42.4.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 92.42.4.0/25
Down right: 92.42.4.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
92.42.4.5	PTR	files.usinsk.net
92.42.4.10	A	bgb.usinsk.ru
92.42.4.11	A+PTR	stb.usinsk.net
92.42.4.11	A+PTR	stb.usinsk.ru
92.42.4.15	PTR	usinsk.su
92.42.4.15	A+PTR	stat.usinsk.net
92.42.4.15	A+PTR	stat.usinsk.ru
92.42.4.30	A+PTR	ns1.usinsk.com
92.42.4.30	A+PTR	ns2.usinsk.net
92.42.4.30	PTR	ns2.usinsk.ru
92.42.4.34	A+PTR	city.usinsk.ru
92.42.4.67	A	dbadm.usinsk.ru
92.42.4.70	A+PTR	usinsk.info
92.42.4.70	PTR	usinskinfo.ru