Robtex

Up: 79.172.40.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 79.172.40.0/23
Down right: 79.172.42.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
79.172.40.22	PTR	79.172.40.22.ural.ru
79.172.40.22	A	ns1.craftrise.ru
79.172.40.122	PTR	79.172.40.122.ural.ru
79.172.40.122	A	mail1.jlr-autoplus.ru
79.172.40.122	A	mail1.volvocarkrasnolesye.ru
79.172.40.162	PTR	mail66.ru
79.172.40.168	PTR	net66.ru
79.172.40.174	PTR	79.172.40.174.ural.ru
79.172.40.174	A	nswes.ui.ranepa.ru
79.172.40.174	A	relay.ui.ranepa.ru
79.172.40.242	PTR	79.172.40.242.ural.ru
79.172.40.242	A	fastrackclaims.co.uk