Robtex

Up: 87.239.24.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 87.239.24.0/23
Down right: 87.239.26.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
87.239.24.0	A	unregister000024239087.c24.msk.pl
87.239.24.7	PTR	87.239.24.7.inetcom.ru
87.239.24.16	PTR	87.239.24.16.inetcom.ru
87.239.24.28	PTR	87.239.24.28.inetcom.ru
87.239.24.70	PTR	87.239.24.70.inetcom.ru
87.239.24.74	PTR	87.239.24.74.inetcom.ru
87.239.24.115	PTR	mx1.sagt.ru
87.239.24.130	PTR	87.239.24.130.inetcom.ru
87.239.24.130	A	asms.ru
87.239.24.130	A	www.asms.ru
87.239.24.141	PTR	87.239.24.141.inetcom.ru
87.239.24.154	PTR	87.239.24.154.inetcom.ru
87.239.24.181	PTR	87.239.24.181.inetcom.ru
87.239.24.188	PTR	87.239.24.188.inetcom.ru
87.239.24.222	A+PTR	mail.nexpogroup.ru
87.239.24.222	A	nexpogroup.ru
87.239.24.222	A	mail.n-expo.ru
87.239.24.224	PTR	87.239.24.224.inetcom.ru
87.239.24.242	PTR	87.239.24.242.inetcom.ru
87.239.24.242	A	matreninfolk.com
87.239.24.242	A	matreninfolk.ru
87.239.25.55	A	unregister055025239087.c25.msk.pl
87.239.25.58	PTR	87.239.25.58.inetcom.ru
87.239.25.58	A	soc-education.ru
87.239.25.58	A	unregister058025239087.c25.msk.pl
87.239.25.66	PTR	87.239.25.66.inetcom.ru
87.239.25.70	A+PTR	mail.herwe-psa.ru
87.239.25.134	A	unregister134025239087.c25.msk.pl
87.239.25.172	PTR	87.239.25.172.inetcom.ru
87.239.25.223	A	unregister223025239087.c25.msk.pl
87.239.26.29	PTR	87.239.26.29.inetcom.ru
87.239.26.37	PTR	87.239.26.37.inetcom.ru
87.239.26.37	A	unregister037026239087.c26.msk.pl
87.239.26.37	A	linchpin.ru
87.239.26.46	PTR	87.239.26.46.inetcom.ru
87.239.26.46	A	ns2.nlazareva.ru
87.239.26.46	A	ns2.delarius-mikamuro.ru
87.239.26.56	PTR	87.239.26.56.inetcom.ru
87.239.26.56	A	rotkin.ru
87.239.26.72	PTR	87.239.26.72.inetcom.ru
87.239.26.84	PTR	87.239.26.84.inetcom.ru
87.239.26.97	PTR	rocketfile.ru
87.239.26.109	PTR	87.239.26.109.inetcom.ru
87.239.26.115	A+PTR	flagman.softexpert.ru
87.239.26.115	A	unregister115026239087.c26.msk.pl
87.239.26.126	A	mail.taply.ru
87.239.26.141	PTR	87.239.26.141.inetcom.ru
87.239.26.154	PTR	87.239.26.154.inetcom.ru
87.239.26.163	PTR	87.239.26.163.inetcom.ru
87.239.26.163	A	aktubselmash.ru
87.239.26.169	PTR	87.239.26.169.inetcom.ru
87.239.26.170	A	unregister170026239087.c26.msk.pl
87.239.26.171	PTR	87.239.26.171.inetcom.ru
87.239.26.171	A	ns.djeep.su
87.239.26.171	A	djeep.su
87.239.26.186	A	rsdio.co
87.239.26.199	PTR	87.239.26.199.inetcom.ru
87.239.26.225	PTR	87.239.26.225.inetcom.ru
87.239.26.229	PTR	87.239.26.229.inetcom.ru
87.239.26.229	A	samar1n.ru
87.239.26.244	PTR	87.239.26.244.inetcom.ru
87.239.26.249	PTR	87.239.26.249.inetcom.ru
87.239.26.249	A	ns.tdpromo.ru
87.239.26.249	A	mail.tdpromo.ru
87.239.27.36	PTR	87.239.27.36.inetcom.ru
87.239.27.59	PTR	87.239.27.59.inetcom.ru
87.239.27.83	PTR	87.239.27.83.inetcom.ru
87.239.27.84	PTR	87.239.27.84.inetcom.ru
87.239.27.91	PTR	87.239.27.91.inetcom.ru
87.239.27.134	PTR	87.239.27.134.inetcom.ru
87.239.27.145	PTR	87.239.27.145.inetcom.ru
87.239.27.151	PTR	87.239.27.151.inetcom.ru
87.239.27.154	PTR	87.239.27.154.inetcom.ru
87.239.27.177	PTR	87.239.27.177.inetcom.ru
87.239.27.193	PTR	87.239.27.193.inetcom.ru
87.239.27.250	PTR	87.239.27.250.inetcom.ru