Robtex

Up: 31.29.0.0/16
Can't show all results, try to descend to a more specific CIDR
Down left: 31.29.128.0/18
Down right: 31.29.192.0/18
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
31.29.128.43	A	mail.itklass.ru
31.29.128.43	A	mail.pro-b-klass.ru
31.29.128.49	A+PTR	ns.mcn.nnov.ru
31.29.128.49	PTR	smtp.mcn.nnov.ru
31.29.128.49	A	mail.pro-b-klass.ru
31.29.135.3	A	arzamas-hleb.ru
31.29.168.132	PTR	dyn-31-29-169-132.balakovo.stream-tv.ru
31.29.174.17	PTR	dyn-31-29-174-17.balakovo.stream-tv.ru
31.29.175.4	PTR	dyn-31-29-175-4.balakovo.stream-tv.ru
31.29.175.128	PTR	dyn-31-29-175-128.balakovo.stream-tv.ru
31.29.188.1	A+PTR	mail.kupez.com.ru
31.29.188.1	A	mail.altynbazar.ru
31.29.188.1	A	mail.jasnaya-polyana.ru
31.29.190.11	A	www.arzamas-hleb.ru
31.29.191.2	PTR	webius.arzamas.net
31.29.191.2	A	votchina.org
31.29.191.2	A	ugnn.ru
31.29.191.178	PTR	mail.amz.ru
31.29.191.180	A	sadovodposrednik.ru
31.29.191.180	A	mail.sadovodposrednik.ru
31.29.191.180	A	mail.xn--80aaafrthfkqfckhm2aeb2oet0e.xn--p1ai
31.29.196.92	A	my.sacris.ru
31.29.200.63	A	hardmania.ru
31.29.201.233	A	supersdr.ru
31.29.202.117	A	www.supersdr.com
31.29.203.24	PTR	pppoe-31-29-203-24.saratov.comstar.ru
31.29.203.199	PTR	pppoe-31-29-203-199.saratov.comstar.ru
31.29.204.38	PTR	pppoe-31-29-204-38.saratov.comstar.ru
31.29.205.126	A	vietnamoknet.ru
31.29.207.42	A	vietnamoknet.ru
31.29.207.42	A	basshorn.ru
31.29.207.42	A	tvoe-leto.ru
31.29.212.210	A	media56.ru
31.29.214.34	A	e0508b73c4f9.dahuaddns.com
31.29.224.12	A	promoutro.ru
31.29.226.148	A	respect-audio.ru
31.29.226.148	A	www.lechenienogtya.ru
31.29.228.74	A	feireen.ru
31.29.236.10	A	mail.tess64.ru