Robtex

Up: 77.120.192.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 77.120.192.0/23
Down right: 77.120.194.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
77.120.192.0	PTR	servers-net.sumy.volia.net
77.120.192.1	A	pluto.sumy.volia.net
77.120.192.2	A+PTR	hosting.sumy.volia.net
77.120.192.2	A	golance.ru
77.120.192.5	A+PTR	buran.sumy.volia.net
77.120.192.5	PTR	ns1.sumy.volia.net
77.120.192.10	A+PTR	ftp.sumy.volia.net
77.120.192.10	PTR	irc.sumy.volia.net
77.120.192.10	A+PTR	ns2.sumy.volia.net
77.120.192.11	A+PTR	mon.sumy.volia.net
77.120.192.12	PTR	reticulum.volia.net
77.120.192.13	PTR	office-server.sumy.volia.net
77.120.192.17	A+PTR	mail.sumy.volia.net
77.120.192.17	A	hosting.sumy.volia.net
77.120.192.17	A	noc.sumy.volia.net
77.120.192.20	PTR	gnom-1.sumy.volia.net
77.120.192.20	A	sum.volia.net
77.120.192.28	PTR	snort.sumy.volia.net
77.120.192.29	PTR	monapp.sumy.volia.net
77.120.192.31	PTR	servers-bcast.sumy.volia.net
77.120.192.37	PTR	pluto.sumy.volia.net
77.120.192.129	PTR	colo-gw.sumy.volia.net
77.120.192.134	A	ns1.lookthis.ru
77.120.192.134	A	ns1.my-ip.ru
77.120.192.135	A	ns2.my-ip.ru
77.120.192.166	PTR	i166.demex.sumy.ua
77.120.192.174	PTR	vsisumy.com
77.120.192.224	PTR	vlan1020-net.sumy.volia.net
77.120.192.239	PTR	vlan1020-bcast.sumy.volia.net
77.120.192.254	PTR	cr-1.sumy.volia.net
77.120.193.0	PTR	77-120-193-0.sumy.volia.net
77.120.193.213	PTR	77-120-193-213.sumy.volia.net
77.120.193.255	PTR	77-120-193-255.sumy.volia.net
77.120.195.15	A	77-120-195-15.sumy.volia.net
77.120.195.29	A	77-120-195-29.sumy.volia.net
77.120.195.32	A	77-120-195-32.sumy.volia.net
77.120.195.88	A	77-120-195-88.sumy.volia.net
77.120.195.102	A	77-120-195-102.sumy.volia.net
77.120.195.114	A	77-120-195-114.sumy.volia.net
77.120.195.140	A	77-120-195-140.sumy.volia.net
77.120.195.255	PTR	77-120-195-255.sumy.volia.net