Robtex

Up: 212.33.224.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 212.33.228.0/23
Down right: 212.33.230.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
212.33.228.2	A+PTR	mx1.pfc.ru
212.33.228.6	PTR	pfc.ru
212.33.228.10	A+PTR	portal.pfc.ru
212.33.228.24	PTR	212x33x228x24.static-business.perm.ertelecom.ru
212.33.228.24	A	incotech.perm.ru
212.33.228.44	PTR	mail.electra-k.ru
212.33.228.58	PTR	212x33x228x58.static-business.perm.ertelecom.ru
212.33.228.69	PTR	212x33x228x69.static-business.perm.ertelecom.ru
212.33.228.70	PTR	212x33x228x70.static-business.perm.ertelecom.ru
212.33.228.91	PTR	mail.novogor.perm.ru
212.33.228.97	A+PTR	mail.grdn.ru
212.33.228.184	A+PTR	permmx.psbank.ru
212.33.228.192	PTR	212x33x228x192.static-business.perm.ertelecom.ru
212.33.228.196	PTR	mail.perm.oranta-sk.ru
212.33.228.196	A	oranta.perm.ru
212.33.228.218	PTR	212x33x228x218.static-business.perm.ertelecom.ru
212.33.228.218	A	www.finist-travel.com
212.33.228.218	A	finist-travel.com
212.33.228.230	A+PTR	rhwu.ru
212.33.228.230	A	mail.rhwu.ru
212.33.228.230	A	www.rhwu.ru
212.33.228.233	A+PTR	server1.steklodom.com
212.33.228.233	A	server1.astralit.ru
212.33.228.233	A	server1.pogoda-dom.ru
212.33.229.4	PTR	212x33x229x4.static-business.perm.ertelecom.ru
212.33.229.4	A	mail2.kmk.perm.ru
212.33.229.10	PTR	212x33x229x10.static-business.perm.ertelecom.ru
212.33.229.18	A+PTR	ns2.bankperm.ru
212.33.229.24	PTR	ns2.bankperm.ru
212.33.229.35	A+PTR	inkomus.ru
212.33.229.35	A	ns2.diomid.perm.ru
212.33.229.35	A	incomus.ru
212.33.229.36	PTR	212x33x229x36.static-business.perm.ertelecom.ru
212.33.229.50	A	mx.energouchet.com
212.33.229.53	PTR	212x33x229x53.static-business.perm.ertelecom.ru
212.33.229.66	PTR	212x33x229x66.static-business.perm.ertelecom.ru
212.33.229.74	PTR	212x33x229x74.static-business.perm.ertelecom.ru
212.33.229.93	PTR	212x33x229x93.static-business.perm.ertelecom.ru
212.33.229.117	A	mail.permavtosnab.ru
212.33.229.121	PTR	ns.hq.norma.perm.ru
212.33.229.122	PTR	prvybor.ru
212.33.229.130	PTR	212x33x229x130.static-business.perm.ertelecom.ru
212.33.229.130	A	remote2.revitech.ru
212.33.229.153	PTR	ns.norma.perm.ru
212.33.229.172	A+PTR	mail2.in-si.ru
212.33.229.228	PTR	mail2.kaskadgroup.com
212.33.229.228	A	mail.kaskadstroy.com
212.33.229.228	A	mail.olmiks.ru
212.33.229.230	PTR	mail.banzay.perm.ru
212.33.229.249	A+PTR	mail.ctipk.ru
212.33.229.249	A	www.ctipk.ru
212.33.229.249	A	ctipk.ru
212.33.230.8	PTR	host8.k77.ru
212.33.230.17	PTR	host17.k77.ru
212.33.230.17	A	ns2.kidradar.ru
212.33.230.17	A	ns2.enazamusic.com
212.33.230.76	PTR	host76.k77.ru
212.33.230.85	PTR	host85.k77.ru
212.33.230.104	PTR	host104.k77.ru
212.33.230.105	PTR	host105.k77.ru
212.33.230.109	PTR	host109.k77.ru
212.33.230.110	PTR	host110.k77.ru
212.33.230.125	PTR	host125.k77.ru
212.33.230.129	A	hosting230-129.ertelecom.ru
212.33.230.129	A	openvz.raid.ru
212.33.230.130	A	hosting.ertelecom.ru
212.33.230.131	PTR	proxy.perm.ertelecom.ru
212.33.230.131	A	proxy.ertelecom.ru
212.33.230.133	A+PTR	history.perm.ru
212.33.230.133	A	www.history.perm.ru
212.33.230.133	A	mx1.history.perm.ru
212.33.230.134	PTR	generic.perm.ertelecom.ru
212.33.230.134	A	generic.ertelecom.ru
212.33.230.136	A+PTR	raid.ru
212.33.230.136	A	photo.raid.ru
212.33.230.136	A	www.photo.raid.ru
212.33.230.138	PTR	schools.perm.ru
212.33.230.138	A	*.schools.perm.ru
212.33.230.153	PTR	hosting230-153.perm.ertelecom.ru
212.33.230.153	A	volga.ertelecom.ru
212.33.230.200	A+PTR	st.perm.ertelecom.ru
212.33.230.200	A	speedtest.perm.ertelecom.ru
212.33.230.230	PTR	teron.ru
212.33.230.230	A	noret.perm.ru
212.33.231.6	PTR	eqmdb.cheb.ertelecom.ru
212.33.231.14	PTR	syslog-serv.ertelecom.ru
212.33.231.140	PTR	cache.google.com
212.33.231.140	A	r1.sn-xguxaxjvh-2xxe.googlevideo.com
212.33.231.140	A	r1.sn-xguxaxjvh-2xxe.gvt1.com
212.33.231.141	A	r2.sn-xguxaxjvh-2xxe.googlevideo.com
212.33.231.141	A	r2---sn-xguxaxjvh-2xxe.googlevideo.com
212.33.231.142	PTR	cache.google.com
212.33.231.143	PTR	cache.google.com
212.33.231.166	PTR	cache.google.com
212.33.231.172	PTR	cache.google.com
212.33.231.172	A	r1---sn-xguxaxjvh-2xxl.googlevideo.com
212.33.231.173	PTR	cache.google.com
212.33.231.173	A	r2---sn-xguxaxjvh-2xxl.googlevideo.com
212.33.231.174	PTR	cache.google.com
212.33.231.174	A	r3.sn-xguxaxjvh-2xxl.googlevideo.com
212.33.231.174	A	r3---sn-xguxaxjvh-2xxl.googlevideo.com
212.33.231.175	PTR	cache.google.com
212.33.231.192	PTR	net231-192.perm.ertelecom.ru