Robtex

Up: 83.137.54.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 83.137.54.0/25
Down right: 83.137.54.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
83.137.54.4	PTR	83.137.54.4.svnet.ru
83.137.54.4	A	testmail.dc77.ru
83.137.54.4	A	mail.testmail.dc77.ru
83.137.54.5	PTR	83.137.54.5.svnet.ru
83.137.54.6	PTR	83.137.54.6.svnet.ru
83.137.54.14	PTR	mailx.svnet.ru
83.137.54.14	A+PTR	mailx.visotka.ru
83.137.54.14	A	mail.moscow-premium.ru
83.137.54.15	PTR	83.137.54.15.svnet.ru
83.137.54.28	A+PTR	mailx.dc77.ru
83.137.54.36	PTR	83.137.54.36.svnet.ru
83.137.54.39	PTR	nashe.ru
83.137.54.39	A	media.nashe.ru
83.137.54.39	A	nsn-news.su
83.137.54.41	PTR	tickets.nashestvie.ru
83.137.54.41	A	player.rockfm.ru
83.137.54.41	A	radiojazzfestival.ru
83.137.54.51	PTR	83.137.54.51.svnet.ru
83.137.54.51	A	exppl.ru
83.137.54.65	PTR	83.137.54.65.svnet.ru
83.137.54.81	PTR	83.137.54.81.svnet.ru
83.137.54.81	A	vivadengi.ru
83.137.54.81	A	www.vivadengi.ru
83.137.54.108	PTR	83.137.54.108.svnet.ru
83.137.54.108	A	coalitionaz.ru
83.137.54.108	A	covercorp.ru
83.137.54.112	PTR	mx.mediatechnology.ru
83.137.54.112	A	ns3.mac-host.ru
83.137.54.112	A	ns2.mac-host.ru
83.137.54.114	PTR	83.137.54.114.svnet.ru
83.137.54.114	A	mahankoff.ru
83.137.54.114	A	mahankoff.com
83.137.54.120	PTR	83.137.54.120.svnet.ru
83.137.54.120	A	chernosliv.com
83.137.54.123	PTR	83.137.54.123.svnet.ru
83.137.54.123	A	etpugra.ru
83.137.54.123	A	www.etpugra.ru
83.137.54.126	PTR	83.137.54.126.svnet.ru
83.137.54.126	A	aferist.cc
83.137.54.126	A	aferist.su
83.137.54.127	PTR	83.137.54.127.svnet.ru
83.137.54.127	A	aferisto.su
83.137.54.148	PTR	83.137.54.148.svnet.ru
83.137.54.194	A+PTR	mail1.alliance1892.ru
83.137.54.194	A	mail.rolsy.ru
83.137.54.194	A	mail1.md-fit.ru
83.137.54.195	A	mail.alliance1892.ru
83.137.54.196	PTR	83.137.54.196.svnet.ru
83.137.54.196	A	mail.atriumgroup.ru
83.137.54.210	PTR	83.137.54.210.svnet.ru
83.137.54.220	PTR	83.137.54.220.svnet.ru
83.137.54.220	A	inkubator.su
83.137.54.220	A	visotka.ru
83.137.54.222	PTR	83.137.54.222.svnet.ru
83.137.54.222	A	trubetskoe.ru
83.137.54.222	A	www.trubetskoe.ru
83.137.54.226	A	xn----ctbfebyidotbyhu1a3jn.xn--p1ai
83.137.54.226	A	www.xn----ctbfebyidotbyhu1a3jn.xn--p1ai
83.137.54.228	A+PTR	mail.infiplay.ru
83.137.54.228	A	mail.pstory.ru
83.137.54.228	A	mail.infiplay.com
83.137.54.229	A	nicoinvest.ru
83.137.54.234	PTR	83.137.54.234.svnet.ru
83.137.54.235	PTR	83.137.54.235.svnet.ru
83.137.54.235	A	jamadv.ru
83.137.54.237	PTR	83.137.54.237.svnet.ru
83.137.54.251	PTR	relay.rialgroup.ru
83.137.54.251	A	rios-hause.com
83.137.54.251	A	sovietwings.ru
83.137.54.252	PTR	83.137.54.252.svnet.ru