Robtex

Up: 81.163.96.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 81.163.104.0/22
Down right: 81.163.108.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
81.163.104.44	PTR	gipsy.usib.tv
81.163.104.44	A	zhilcontrol.ru
81.163.104.44	A	cinema-soft.ru
81.163.104.96	A+PTR	line-44.usib.tv
81.163.104.97	A+PTR	line-44.usib.tv
81.163.104.98	A+PTR	line-44.usib.tv
81.163.104.99	A+PTR	line-44.usib.tv
81.163.104.100	A	line-44.usib.tv
81.163.104.101	A	line-44.usib.tv
81.163.104.102	A	line-44.usib.tv
81.163.104.103	A	line-44.usib.tv
81.163.104.104	A+PTR	line-44.usib.tv
81.163.104.105	A+PTR	line-44.usib.tv
81.163.104.106	A+PTR	line-44.usib.tv
81.163.104.107	A+PTR	line-44.usib.tv
81.163.104.108	A	line-44.usib.tv
81.163.104.109	A	line-44.usib.tv
81.163.104.110	A	line-44.usib.tv
81.163.104.111	A	line-44.usib.tv
81.163.104.112	A+PTR	line-44.usib.tv
81.163.104.113	A+PTR	line-44.usib.tv
81.163.104.114	A+PTR	line-44.usib.tv
81.163.104.115	A+PTR	line-44.usib.tv
81.163.104.116	A	line-44.usib.tv
81.163.104.117	A	line-44.usib.tv
81.163.104.118	A	line-44.usib.tv
81.163.104.119	A	line-44.usib.tv
81.163.104.120	A+PTR	line-44.usib.tv
81.163.104.121	A+PTR	line-44.usib.tv
81.163.104.122	A+PTR	line-44.usib.tv
81.163.104.123	A+PTR	line-44.usib.tv
81.163.104.124	A	line-44.usib.tv
81.163.104.125	A	line-44.usib.tv
81.163.104.126	A	line-44.usib.tv
81.163.104.127	A	line-44.usib.tv
81.163.105.7	A	mail.nadfarm.ru
81.163.105.7	A	nadfarm.ru
81.163.105.7	A	ns1.nadfarm.ru
81.163.106.35	A	mail1.usolie.tv
81.163.106.76	PTR	center.usib.tv
81.163.106.76	A	cdsschool.uoura.ru
81.163.106.76	A	uoura.ru
81.163.107.0	A+PTR	line-71.usib.tv
81.163.107.1	A+PTR	line-71.usib.tv
81.163.107.2	A+PTR	line-71.usib.tv
81.163.107.3	PTR	81x163x107x3.dynamic.irkutsk.ertelecom.ru
81.163.107.3	A	line-71.usib.tv
81.163.107.4	A	line-71.usib.tv
81.163.107.5	A	line-71.usib.tv
81.163.107.6	A	line-71.usib.tv
81.163.107.7	A	line-71.usib.tv
81.163.107.8	A+PTR	line-71.usib.tv
81.163.107.9	A+PTR	line-71.usib.tv
81.163.107.10	PTR	neptun.okna-klass.com
81.163.107.10	A	line-71.usib.tv
81.163.107.11	A+PTR	line-71.usib.tv
81.163.107.12	A	line-71.usib.tv
81.163.107.13	A	line-71.usib.tv
81.163.107.14	A	line-71.usib.tv
81.163.107.15	A	line-71.usib.tv
81.163.107.16	A+PTR	line-71.usib.tv
81.163.107.17	A+PTR	line-71.usib.tv
81.163.107.18	A+PTR	line-71.usib.tv
81.163.107.19	A+PTR	line-71.usib.tv
81.163.107.20	A	line-71.usib.tv
81.163.107.21	A	line-71.usib.tv
81.163.107.22	A	line-71.usib.tv
81.163.107.23	A	line-71.usib.tv
81.163.107.24	A+PTR	line-71.usib.tv
81.163.107.25	A+PTR	line-71.usib.tv
81.163.107.26	A+PTR	line-71.usib.tv
81.163.107.27	PTR	81x163x107x27.dynamic.irkutsk.ertelecom.ru
81.163.107.27	A	line-71.usib.tv
81.163.107.28	A	line-71.usib.tv
81.163.107.29	A	line-71.usib.tv
81.163.107.30	A	line-71.usib.tv
81.163.107.30	A	taxi-2.usib.tv
81.163.107.31	A	line-71.usib.tv
81.163.108.9	PTR	line-81.usib.tv
81.163.108.10	PTR	line-81.usib.tv
81.163.108.158	A+PTR	nedsib.ru
81.163.108.158	A	mx.nedsib.ru
81.163.108.158	A	nedguru.ru
81.163.109.160	PTR	line-96.usib.tv
81.163.109.178	PTR	line-96.usib.tv
81.163.109.179	PTR	line-96.usib.tv
81.163.109.186	PTR	line-96.usib.tv
81.163.109.192	A+PTR	line-97.usib.tv
81.163.109.193	A+PTR	line-97.usib.tv
81.163.109.194	A+PTR	line-97.usib.tv
81.163.109.195	A+PTR	line-97.usib.tv
81.163.109.196	A	line-97.usib.tv
81.163.109.197	A	line-97.usib.tv
81.163.109.198	A	line-97.usib.tv
81.163.109.199	A	line-97.usib.tv
81.163.109.200	A+PTR	line-97.usib.tv
81.163.109.201	A+PTR	line-97.usib.tv
81.163.109.202	A+PTR	line-97.usib.tv
81.163.109.203	A+PTR	line-97.usib.tv
81.163.109.204	A	line-97.usib.tv
81.163.109.205	A	line-97.usib.tv
81.163.109.206	A	line-97.usib.tv
81.163.109.207	A	line-97.usib.tv
81.163.109.208	A+PTR	line-97.usib.tv
81.163.109.209	A+PTR	line-97.usib.tv
81.163.109.210	A+PTR	line-97.usib.tv
81.163.109.211	A+PTR	line-97.usib.tv
81.163.109.212	A	line-97.usib.tv
81.163.109.213	A	line-97.usib.tv
81.163.109.214	A	line-97.usib.tv
81.163.109.215	A	line-97.usib.tv
81.163.109.216	A+PTR	line-97.usib.tv
81.163.109.217	A+PTR	line-97.usib.tv
81.163.109.218	A+PTR	line-97.usib.tv
81.163.109.219	A+PTR	line-97.usib.tv
81.163.109.220	A	line-97.usib.tv
81.163.109.221	A	line-97.usib.tv
81.163.109.222	A	line-97.usib.tv
81.163.109.223	A	line-97.usib.tv
81.163.111.2	A+PTR	ns2.usib.tv
81.163.111.42	A	xmpp.usib.tv
81.163.111.44	A+PTR	sip.usib.tv
81.163.111.81	PTR	ones.usib.tv
81.163.111.83	PTR	gorod.usib.tv
81.163.111.83	A	comepay.usib.tv
81.163.111.83	A	ftp.usib.tv
81.163.111.110	A+PTR	mx.usib.tv
81.163.111.110	A	smtp.usib.tv
81.163.111.110	A	mail.usib.tv
81.163.111.111	A	1c.usib.tv
81.163.111.168	A+PTR	usib.tv
81.163.111.168	A	www.usib.tv