Robtex

Up: 109.172.24.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 109.172.24.0/25
Down right: 109.172.24.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
109.172.24.122	A+PTR	mail.vostok-nn.ru
109.172.24.134	A+PTR	kipnat.kaskad-forever.nnov.ru
109.172.24.134	A	kipnat.kaskad-forever.ru
109.172.24.134	A	kaskad-forever.nnov.ru
109.172.24.214	A+PTR	mx.atem.su
109.172.24.214	A	xn--80ayr8b.xn--p1ai