Robtex

Up: 87.239.24.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 87.239.28.0/23
Down right: 87.239.30.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
87.239.28.2	A	mail.bixis.net
87.239.28.14	A	mail.9358855.ru
87.239.28.40	PTR	87.239.28.40.inetcom.ru
87.239.28.115	PTR	mail2.simvol7.com
87.239.28.115	A	simvol7.com
87.239.28.122	PTR	mail.optim-m.ru
87.239.28.138	A+PTR	kl.liontex.ru
87.239.28.138	A	email.xn--e1afhblfyf.xn--p1ai
87.239.28.138	A	po.liontex.ru
87.239.28.158	PTR	87.239.28.158.inetcom.ru
87.239.28.182	PTR	87.239.28.182.inetcom.ru
87.239.28.182	A	www.apk-e.ru
87.239.28.182	A	distkontrol.ru
87.239.28.190	A+PTR	mx.tkline.ru
87.239.28.198	PTR	87.239.28.198.inetcom.ru
87.239.29.2	PTR	87.239.29.2.inetcom.ru
87.239.29.33	PTR	87.239.29.33.inetcom.ru
87.239.30.26	PTR	87.239.30.26.inetcom.ru
87.239.30.62	PTR	87.239.30.62.inetcom.ru
87.239.30.62	A	yastory.ru
87.239.30.62	A	hungry24.ru
87.239.30.134	A	vpn.kosco.su
87.239.30.190	PTR	87.239.30.190.inetcom.ru
87.239.30.190	A	mx1.remti.ru
87.239.30.202	A	firewall.div-company.ru
87.239.30.202	A	mail.div-company.ru
87.239.30.210	PTR	87.239.30.210.inetcom.ru
87.239.30.234	PTR	87.239.30.234.inetcom.ru
87.239.31.50	PTR	87.239.31.50.inetcom.ru
87.239.31.50	A	santarus.ru
87.239.31.59	PTR	87.239.31.59.inetcom.ru
87.239.31.61	PTR	imsva.6210.org
87.239.31.62	PTR	new2.6210.org
87.239.31.121	PTR	87.239.31.121.inetcom.ru
87.239.31.203	A	iptvs2.inetcom.ru
87.239.31.206	PTR	87.239.31.206.inetcom.ru
87.239.31.206	A	iptvs7.inetcom.ru
87.239.31.207	A	iptvs8.inetcom.ru
87.239.31.208	A	iptvs5.inetcom.ru
87.239.31.209	PTR	87.239.31.209.inetcom.ru
87.239.31.209	A	iptvs3.inetcom.ru
87.239.31.217	PTR	87.239.31.217.inetcom.ru
87.239.31.217	A	iptvs1.inetcom.ru
87.239.31.218	A	iptvs6.inetcom.ru
87.239.31.220	PTR	87.239.31.220.inetcom.ru
87.239.31.223	PTR	87.239.31.223.inetcom.ru
87.239.31.232	PTR	87.239.31.232.inetcom.ru
87.239.31.255	PTR	87.239.31.255.inetcom.ru