Robtex

Up: 77.120.4.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 77.120.4.0/25
Down right: 77.120.4.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
77.120.4.0	PTR	unknown.volia.net
77.120.4.1	PTR	unknown.volia.net
77.120.4.12	PTR	unknown.volia.net
77.120.4.18	PTR	unknown.volia.net
77.120.4.30	PTR	unknown.volia.net
77.120.4.53	PTR	unknown.volia.net
77.120.4.67	PTR	unknown.volia.net
77.120.4.84	PTR	unknown.volia.net
77.120.4.97	PTR	unknown.volia.net
77.120.4.103	PTR	unknown.volia.net
77.120.4.108	PTR	unknown.volia.net
77.120.4.132	PTR	unknown.volia.net
77.120.4.141	PTR	unknown.volia.net
77.120.4.155	PTR	unknown.volia.net
77.120.4.159	PTR	unknown.volia.net
77.120.4.160	PTR	unknown.volia.net
77.120.4.161	PTR	unknown.volia.net
77.120.4.162	PTR	unknown.volia.net
77.120.4.163	PTR	unknown.volia.net
77.120.4.164	PTR	unknown.volia.net
77.120.4.165	PTR	unknown.volia.net
77.120.4.166	PTR	unknown.volia.net
77.120.4.189	A+PTR	vmb1.ott.volia.com
77.120.4.190	PTR	unknown.volia.net
77.120.4.193	PTR	unknown.volia.net
77.120.4.211	PTR	unknown.volia.net
77.120.4.226	PTR	app1.ott.volia.com
77.120.4.226	A+PTR	mobil.volia.com
77.120.4.226	A+PTR	live.volia.com
77.120.4.228	A+PTR	widget1.ott.volia.com
77.120.4.229	A+PTR	app2.ott.volia.com
77.120.4.231	A+PTR	widget2.ott.volia.com
77.120.4.238	PTR	unknown.volia.net
77.120.4.238	A	vmb1.ott.volia.com