Robtex

Up: 89.252.40.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 89.252.40.0/25
Down right: 89.252.40.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
89.252.40.0	PTR	89.252.40.0.freenet.com.ua
89.252.40.1	PTR	89.252.40.1.freenet.com.ua
89.252.40.2	PTR	89.252.40.2.freenet.com.ua
89.252.40.6	PTR	mail.proagro.com.ua
89.252.40.29	A+PTR	mail.ubd.net.ua
89.252.40.114	PTR	89.252.40.114.freenet.com.ua
89.252.40.131	A	ns.stz.com.ua
89.252.40.133	PTR	mail.stz.com.ua
89.252.40.155	PTR	ntp.hds.com.ua
89.252.40.170	PTR	ns.starokon.com.ua
89.252.40.170	A	bind.starokon.com
89.252.40.170	A	bind.ironport.name
89.252.40.175	PTR	ns.hds.name
89.252.40.196	A+PTR	smtp.goodwine.com.ua