Robtex

Up: 81.30.164.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 81.30.165.0/25
Down right: 81.30.165.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
81.30.165.0	PTR	81.30.165.0.vntp.net
81.30.165.2	PTR	centermul-dastor.vntp.net
81.30.165.2	A	shprojects.tk
81.30.165.2	A	rados.tk
81.30.165.3	PTR	81.30.165.3.vntp.net
81.30.165.15	PTR	81.30.165.15.vntp.net
81.30.165.16	PTR	81.30.165.16.vntp.net
81.30.165.30	PTR	infrakon.com
81.30.165.31	PTR	81.30.165.31.vntp.net
81.30.165.32	PTR	81.30.165.32.vntp.net
81.30.165.34	PTR	81.30.165.34.vntp.net
81.30.165.47	PTR	81.30.165.47.vntp.net
81.30.165.50	PTR	81.30.165.50.vntp.net
81.30.165.51	PTR	81.30.165.51.vntp.net
81.30.165.65	PTR	vinvtormet-gw.vntp.net
81.30.165.86	A	dserv1.vntp.net
81.30.165.88	PTR	81.30.165.88.vntp.net
81.30.165.95	PTR	81.30.165.95.vntp.net
81.30.165.98	PTR	host98.elecoms.com.ua
81.30.165.115	PTR	hm.vin.ua
81.30.165.115	A	vinasterisk.com
81.30.165.115	A	vnstr.net
81.30.165.122	PTR	ns3.vntp.net
81.30.165.128	PTR	81.30.165.128.vntp.net
81.30.165.131	PTR	mail.elecoms.com.ua
81.30.165.140	PTR	81.30.165.140.vntp.net
81.30.165.144	PTR	81.30.165.144.vntp.net
81.30.165.146	PTR	81.30.165.146.vntp.net
81.30.165.148	PTR	81.30.165.148.vntp.net
81.30.165.150	A	router2.vntp.net
81.30.165.167	PTR	81.30.165.167.vntp.net
81.30.165.174	PTR	81.30.165.174.vntp.net
81.30.165.181	PTR	81.30.165.181.vntp.net
81.30.165.183	PTR	81.30.165.183.vntp.net
81.30.165.184	PTR	81.30.165.184.vntp.net
81.30.165.185	PTR	81.30.165.185.vntp.net
81.30.165.214	PTR	81.30.165.214.vntp.net
81.30.165.219	PTR	81.30.165.219.vntp.net
81.30.165.226	PTR	81.30.165.226.vntp.net
81.30.165.233	PTR	81.30.165.233.vntp.net
81.30.165.246	A	vingate.net