Robtex

Up: 91.192.96.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 91.192.96.0/23
Down right: 91.192.98.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
91.192.96.1	A+PTR	lipetsk-ix.ru
91.192.96.3	A+PTR	nas2.lis.su
91.192.96.18	A+PTR	ns1.lis.su
91.192.96.21	A	www.game.lis.su
91.192.96.21	A	game.lis.su
91.192.96.29	PTR	gtel.lis.su
91.192.96.29	A	www.lipetsk-ix.ru
91.192.96.29	A	www.lanplanet.ru
91.192.96.53	A	mail.rk-antey.ru
91.192.96.53	A	mail.megakom48.ru
91.192.96.85	PTR	mail.liprosinka.ru
91.192.96.86	A	it-lip.ru
91.192.96.86	A	xn--80aqaclzr.xn--p1ai
91.192.96.131	A	contur-group.ru
91.192.96.131	A	barscenter.ru
91.192.97.2	A	telco.lipnet.ru
91.192.97.10	A+PTR	star.lis.su
91.192.97.18	A+PTR	ns2.lis.su
91.192.97.19	A+PTR	ns4.lis.su