Robtex

Up: 79.136.240.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 79.136.240.0/22
Down right: 79.136.244.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
79.136.240.1	A+PTR	gw.udcs.ru
79.136.240.1	A	ns.fisb.ru
79.136.240.1	A	ns1.udcs.ru
79.136.240.3	PTR	security.tomsk.ru
79.136.240.27	A+PTR	ntp.udcs.ru
79.136.240.71	A	ns5.isib.su
79.136.240.110	A	www.fisb.ru
79.136.240.110	A	xn--90an1a.xn--p1ai
79.136.240.134	A	melipharo.udcs.ru
79.136.240.149	PTR	lists.udcs.ru
79.136.240.149	A	lists.isib.su
79.136.240.155	PTR	integrosoft.ru
79.136.240.155	A	abramovsn.ru
79.136.240.155	A	linux70.ru
79.136.240.234	A	www.fisb.ru
79.136.240.235	A	mail.fisb.ru
79.136.240.235	A	mail.security.tomsk.ru
79.136.240.235	A	mail.isib.su
79.136.241.6	A	melnikov.pw
79.136.241.22	PTR	ctb-gw.keva.tusur.ru
79.136.241.22	A	ns4.keva.tusur.ru
79.136.241.26	PTR	kosmos-core.kosmos.tusur.ru
79.136.241.34	PTR	gw.isib.su
79.136.241.34	A	ns2.isib.su
79.136.241.42	PTR	gw.isib.su
79.136.241.90	PTR	omega.kosmos.tusur.ru
79.136.242.2	A	kosmos.tusur.ru
79.136.242.246	A+PTR	246.242.136.79.vega.kosmos.tusur.ru
79.136.243.0	A	0.243.136.79.altair.kosmos.tusur.ru
79.136.243.160	A+PTR	160.243.136.79.deneb.kosmos.tusur.ru
79.136.243.202	A+PTR	202.243.136.79.deneb.kosmos.tusur.ru
79.136.243.255	PTR	255.243.136.79.deneb.kosmos.tusur.ru
79.136.244.157	A	user-79-136-244-157.tomtelnet.ru
79.136.244.173	A+PTR	user-79-136-244-173.tomtelnet.ru
79.136.244.173	A	mail.shared-dns-server.ru
79.136.244.220	A	user-79-136-244-220.tomtelnet.ru
79.136.244.243	A+PTR	user-79-136-244-243.tomtelnet.ru
79.136.246.129	A+PTR	user-79-136-246-129.tomtelnet.ru
79.136.246.129	A	bcn.nikpro.ru