Robtex

Up: 37.232.128.0/17
Can't show all results, try to descend to a more specific CIDR
Down left: 37.232.128.0/19
Down right: 37.232.160.0/19
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
37.232.128.0	PTR	static-37-232-128-0.netbynet.ru
37.232.129.64	PTR	static-37-232-129-64.netbynet.ru
37.232.129.67	PTR	static-37-232-129-67.netbynet.ru
37.232.130.103	A	kadkin.ru
37.232.131.67	PTR	static-37-232-131-67.netbynet.ru
37.232.131.93	A	xn--80aeeyehhecb5ar.xn--p1ai
37.232.131.93	A	mail.nikiton21.ru
37.232.131.93	A	dolkosmonavt.ru
37.232.136.20	A	mail.spectr-ak.ru
37.232.136.20	A	mail.vrhost.ru
37.232.136.20	A	mail.mir-ak.ru
37.232.136.105	A	pr-magic.ru
37.232.136.105	A	*.autospez.ru
37.232.136.105	A	xn--b1a0bh.xn--p1ai
37.232.138.67	PTR	static-37-232-138-67.netbynet.ru
37.232.140.147	A	zl5.ru
37.232.142.85	A	elektro-doka.ru
37.232.143.233	A	grinova.org
37.232.144.0	PTR	static-37-232-144-0.netbynet.ru
37.232.144.67	PTR	static-37-232-144-67.netbynet.ru
37.232.153.66	PTR	static-37-232-153-66.netbynet.ru
37.232.154.68	A	mail.kst21.ru
37.232.156.129	A	garantzap.com
37.232.162.2	PTR	static-37-232-162-2.netbynet.ru
37.232.165.115	A	dtolja.ru
37.232.165.115	A	ci-bi.net
37.232.165.115	A	sysurl.ru
37.232.168.35	A	dc1.bristol-msk.ru
37.232.168.192	PTR	static-37-232-168-192.netbynet.ru
37.232.169.49	A	slepoymysh.net
37.232.170.3	PTR	static-37-232-170-3.netbynet.ru
37.232.171.131	PTR	static-37-232-171-131.netbynet.ru
37.232.171.192	PTR	static-37-232-171-192.netbynet.ru
37.232.172.17	A	mx1.id21.ru
37.232.172.17	A	id21.ru
37.232.172.21	A	wdecision.ru
37.232.172.28	A	mx3.gkh21.ru
37.232.174.96	A	hellotech.ru
37.232.175.240	A	mail.zaolama.ru
37.232.176.65	PTR	static-37-232-176-65.netbynet.ru
37.232.178.65	PTR	static-37-232-178-65.netbynet.ru
37.232.181.3	PTR	chsetgaz.ru
37.232.181.3	A	srvmailgate.chsetgaz.ru
37.232.181.153	A	mail.elekom.pro
37.232.182.130	PTR	static-37-232-182-130.netbynet.ru
37.232.190.193	PTR	static-37-232-190-193.netbynet.ru
37.232.191.164	A	ml21.ru