Robtex

Up: 212.33.232.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 212.33.233.0/25
Down right: 212.33.233.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
212.33.233.1	A+PTR	flow.perm.ertelecom.ru
212.33.233.9	A+PTR	war1.perm.ertelecom.ru
212.33.233.9	A	mikrotik.ertelecom.ru
212.33.233.26	A	c8-to-p2.raid.ru
212.33.233.33	A+PTR	holding-vpn.raid.ru
212.33.233.34	A	c1-to-usi.raid.ru
212.33.233.40	A+PTR	pic-peering.raid.ru
212.33.233.41	A	sous.ertelecom.ru
212.33.233.82	PTR	eqm.hq.ertelecom.ru
212.33.233.82	A	noc.ertelecom.ru
212.33.233.114	PTR	net233-114.perm.ertelecom.ru
212.33.233.126	PTR	bgw01.perm.ertelecom.ru
212.33.233.169	PTR	upload.perm.ertelecom.ru
212.33.233.169	A	test.tmn.ertelecom.ru
212.33.233.169	A	neolink.ru
212.33.233.189	A+PTR	balancer1.site1.ertelecom.ru
212.33.233.189	A	upload.info.ertelecom.ru
212.33.233.189	A	test.ertelecom.ru
212.33.233.207	A+PTR	www1.perm.ertelecom.ru
212.33.233.210	PTR	radgrsv.perm.ertelecom.ru
212.33.233.218	A	avensis.raid.ru
212.33.233.255	PTR	net233-255.perm.ertelecom.ru