Robtex

Up: 178.161.136.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 178.161.136.0/23
Down right: 178.161.138.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
178.161.136.70	PTR	mail.alteron.perm.ru
178.161.136.70	A	ns1.alteron.perm.ru
178.161.136.70	A	ns.lugovayavoda.ru
178.161.136.158	A+PTR	mail.elkam.ru
178.161.136.206	A+PTR	npcro.ru
178.161.136.206	A	bubotoy.ru
178.161.137.14	A+PTR	portal59.ru
178.161.137.18	A+PTR	perm.siaint.ru
178.161.137.18	A	mx1.perm.siaint.ru
178.161.137.50	PTR	178.161.137.50.ipn.v4.saturn-internet.ru
178.161.137.50	A	mail1.intromag.perm.ru
178.161.137.62	A+PTR	mail.kraskichemi.ru
178.161.137.66	A	mail.avtocvet.ru
178.161.137.158	A+PTR	mail.optimumperm.ru
178.161.137.230	A+PTR	mx.igro-grad.ru
178.161.137.238	A	perm.ucont.ru
178.161.138.9	PTR	178.161.138.9.ipn.v4.saturn-internet.ru
178.161.138.18	A	mail.fortaperm.ru
178.161.138.22	PTR	178.161.138.22.ipn.v4.saturn-internet.ru
178.161.138.25	PTR	178.161.138.25.ipn.v4.saturn-internet.ru
178.161.138.26	PTR	178.161.138.26.ipn.v4.saturn-internet.ru
178.161.138.34	PTR	178.161.138.34.ipn.v4.saturn-internet.ru
178.161.138.48	PTR	178.161.138.48.ipn.v4.saturn-internet.ru
178.161.138.53	PTR	178.161.138.53.ipn.v4.saturn-internet.ru
178.161.138.55	PTR	178.161.138.55.ipn.v4.saturn-internet.ru
178.161.138.58	A+PTR	mx2.sad-centre.ru
178.161.138.70	PTR	178.161.138.70.ipn.v4.saturn-internet.ru
178.161.138.70	A+PTR	server-8-gate.uk-union.ru
178.161.138.70	A	server-ui.uk-union.ru
178.161.138.78	PTR	178.161.138.78.ipn.v4.saturn-internet.ru
178.161.138.93	PTR	178.161.138.93.ipn.v4.saturn-internet.ru
178.161.138.105	PTR	178.161.138.105.ipn.v4.saturn-internet.ru
178.161.138.112	PTR	178.161.138.112.ipn.v4.saturn-internet.ru
178.161.138.127	PTR	178.161.138.127.ipn.v4.saturn-internet.ru
178.161.138.138	A+PTR	mail.uhm2.ru
178.161.138.140	PTR	178.161.138.140.ipn.v4.saturn-internet.ru
178.161.138.144	PTR	178.161.138.144.ipn.v4.saturn-internet.ru
178.161.138.145	PTR	178.161.138.145.ipn.v4.saturn-internet.ru
178.161.138.147	PTR	178.161.138.147.ipn.v4.saturn-internet.ru
178.161.138.149	PTR	178.161.138.149.ipn.v4.saturn-internet.ru
178.161.138.152	PTR	178.161.138.152.ipn.v4.saturn-internet.ru
178.161.138.156	PTR	178.161.138.156.ipn.v4.saturn-internet.ru
178.161.138.161	PTR	178.161.138.161.ipn.v4.saturn-internet.ru
178.161.138.162	A+PTR	mail.giperbaza.ru
178.161.138.164	PTR	178.161.138.164.ipn.v4.saturn-internet.ru
178.161.138.171	PTR	178.161.138.171.ipn.v4.saturn-internet.ru
178.161.138.173	PTR	178.161.138.173.ipn.v4.saturn-internet.ru
178.161.138.183	PTR	178.161.138.183.ipn.v4.saturn-internet.ru
178.161.138.190	A+PTR	gshm.ru
178.161.138.191	PTR	178.161.138.191.ipn.v4.saturn-internet.ru
178.161.138.197	PTR	178.161.138.197.ipn.v4.saturn-internet.ru
178.161.138.199	PTR	178.161.138.199.ipn.v4.saturn-internet.ru
178.161.138.214	PTR	178.161.138.214.ipn.v4.saturn-internet.ru
178.161.138.214	A	rucard-perm.ru
178.161.138.220	PTR	178.161.138.220.ipn.v4.saturn-internet.ru
178.161.138.225	PTR	178.161.138.225.ipn.v4.saturn-internet.ru
178.161.138.226	PTR	ranat.ru
178.161.138.226	A	randersoft.com
178.161.138.226	A	www.randersoft.com
178.161.138.244	PTR	178.161.138.244.ipn.v4.saturn-internet.ru
178.161.139.6	A+PTR	mail.coep.ru
178.161.139.54	A+PTR	mail.retrofm.perm.ru
178.161.139.155	A	mail1.permremont.ru
178.161.139.156	PTR	178.161.139.156.ipn.v4.saturn-internet.ru
178.161.139.170	A	corp.etp-perm.ru
178.161.139.174	A	spectosystems.ru
178.161.139.178	A	prosamara.ru
178.161.139.178	A	hotels59.ru
178.161.139.178	A	propenza.ru
178.161.139.186	A+PTR	mail.perm.ws
178.161.139.186	A	ns1.perm.ws
178.161.139.186	A	ns1.transantikorr.ru
178.161.139.190	A	el59.ru
178.161.139.194	PTR	delectus.ru
178.161.139.194	PTR	stylauto.ru
178.161.139.194	A+PTR	liga-m.su
178.161.139.218	A+PTR	mail2.kamkabel.ru
178.161.139.234	A	spat-ops.com