Robtex

Up: 185.12.224.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 185.12.228.0/23
Down right: 185.12.230.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
185.12.228.0	PTR	pool-185-12-228-0.is74.ru
185.12.228.2	PTR	exchange.g-miass.ru
185.12.228.2	A	xn--80aplwa.xn--p1ai
185.12.228.2	A	www.g-miass.ru
185.12.228.61	A+PTR	mail.restostar.com
185.12.228.172	A	mail1.ecol.edu.ru
185.12.228.172	A	ecol.edu.ru
185.12.228.196	PTR	pool-185-12-228-196.is74.ru
185.12.229.0	PTR	pool-185-12-229-0.is74.ru
185.12.229.54	PTR	pool-185-12-229-54.is74.ru
185.12.229.54	A	mail2.tdsigma.ru
185.12.229.178	A+PTR	mail.gkap.ru
185.12.229.178	A	gkap.ru
185.12.229.178	A	kabare-x.ru
185.12.229.186	PTR	pool-185-12-229-186.is74.ru
185.12.230.0	PTR	pool-185-12-230-0.is74.ru
185.12.230.2	A	srvrprt.ru
185.12.230.58	A	mail.promcontrol.ru
185.12.230.70	PTR	pool-185-12-230-70.is74.ru
185.12.230.70	A	sokrat.biz
185.12.230.102	PTR	mail.dializ74.ru
185.12.230.102	A	mx2.dializ74.ru
185.12.230.154	A	mail.uunp.ru
185.12.230.154	A	mx.uunp.ru
185.12.230.242	PTR	pool-185-12-230-242.is74.ru
185.12.231.0	PTR	pool-185-12-231-0.is74.ru
185.12.231.54	A	promservisooo.ru
185.12.231.54	A	www.xn--j1acfdbljed3h.xn--p1ai
185.12.231.54	A	xn--80aafe4bmec3aad.xn--p1ai
185.12.231.94	A+PTR	mail.chebarcul.ru
185.12.231.94	A	chebarcul.ru
185.12.231.94	A	www.chebarcul.ru
185.12.231.234	A+PTR	mail.pony-zlat.ru