Robtex

Up: 212.41.20.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 212.41.20.0/24
Down right: 212.41.21.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
212.41.20.2	A+PTR	mail.kgau.ru
212.41.20.3	PTR	h3.lan20.kts.ru
212.41.20.3	A	kgau.ru
212.41.20.3	A	ns.kgau.ru
212.41.20.7	A	e.kgau.ru
212.41.20.10	PTR	mail.kgau.ru
212.41.20.12	PTR	mail.kgau.ru
212.41.20.22	PTR	h22.lan20.kts.ru