Robtex

Up: 81.163.240.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 81.163.248.0/22
Down right: 81.163.252.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
81.163.250.2	A+PTR	mail.dpiter.ru
81.163.250.2	A	aviamodels.ru
81.163.250.2	A	dpiter.ru
81.163.251.13	A+PTR	ns2.chelny.online
81.163.251.14	A	mail.gamenet.pro
81.163.251.82	A	ns2.rulweb.ru
81.163.251.87	A	mail.rulweb.ru
81.163.253.6	A	ns2.fox-net.ru
81.163.253.6	A	dns3.fox-net.ru
81.163.253.130	A	mail.koltushi.ru
81.163.253.130	A	koltushi.ru
81.163.253.131	A	mail.rulweb.ru
81.163.253.131	A	rulweb.ru
81.163.253.145	A	cs-expert.ru
81.163.253.145	A	www.cs-expert.ru
81.163.253.145	A	lhost.company
81.163.253.155	A	ns7.fox-net.ru
81.163.253.222	A	foxwork.fox-net.ru
81.163.253.225	PTR	alabuga.su
81.163.253.225	A	mail.alabuga.su
81.163.253.225	A	mail2.host24.pro
81.163.253.233	A	mail.runeofmagic.com
81.163.254.6	PTR	win2k3-obraz.fox-net.ru
81.163.254.6	A	mail.gamenet.pro
81.163.254.6	A	gk-voyage.ru
81.163.254.18	A	mail.webcluster.pro
81.163.254.20	PTR	fishshop.online
81.163.254.20	PTR	mail.webcluster.pro
81.163.254.25	A+PTR	chelny.online
81.163.254.25	A	www.chelny.online
81.163.254.26	PTR	fox-net.ru
81.163.254.26	A+PTR	mail.fox-net.ru
81.163.254.26	A+PTR	mail.chelny.online
81.163.254.27	PTR	billing.chelny.online.254.163.81.in-addr.arpa
81.163.254.196	A	julianmu.com
81.163.254.196	A	mail.julianmu.com
81.163.254.198	A	dc-6529499a.pvpmu.ru
81.163.254.244	PTR	googl-pro-244.chelny.online
81.163.255.2	PTR	foxy.pro
81.163.255.16	PTR	ds16.foxy.pro
81.163.255.16	A	l2stigma.ru
81.163.255.20	A	qdb3a5a.fox-net.ru
81.163.255.31	A	dns2.fox-net.ru
81.163.255.40	A	buy-link.pro
81.163.255.40	A	mail.buy-link.pro
81.163.255.100	A	l2mm.com
81.163.255.100	A	exilium.us
81.163.255.100	A	clickamart.com
81.163.255.105	A	seo-work.pro
81.163.255.105	A	mail.film-ex.com
81.163.255.123	A	ns1.host24.pro
81.163.255.123	A	ns1.og-host.ru
81.163.255.144	A	xostvideo.com
81.163.255.145	PTR	guard-1.lite-host.ru
81.163.255.145	A	key-craft.ru
81.163.255.145	A	ruspublic18.ru
81.163.255.155	A	ns6.fox-net.ru
81.163.255.155	A	mail.insomnia-world.com
81.163.255.155	A	bfly.me