Robtex

Up: 84.242.4.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 84.242.4.0/25
Down right: 84.242.4.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
84.242.4.18	PTR	4-18.radion.net
84.242.4.18	A	ns2.telvio.ru
84.242.4.18	A	ns.excom.ru
84.242.4.37	A+PTR	mail.oao-oez.spb.ru
84.242.4.39	PTR	4-39.radion.net
84.242.4.39	A	oao-oez.spb.ru
84.242.4.39	A	www.oao-oez.spb.ru
84.242.4.41	PTR	mail.spbsez.ru
84.242.4.41	A+PTR	mail.oao-oez.spb.ru
84.242.4.44	PTR	4-44.radion.net
84.242.4.44	A	sezgateway.oao-oez.spb.ru
84.242.4.68	PTR	4-68.radion.net
84.242.4.82	PTR	4-82.radion.net
84.242.4.118	PTR	4-118.radion.net
84.242.4.118	A	mx.capsvyaz.ru
84.242.4.118	A	dodo.capsvyaz.ru
84.242.4.142	PTR	4-142.radion.net
84.242.4.142	A	ns.nt21.com
84.242.4.142	A	mail.nt21.com
84.242.4.253	PTR	4-253.radion.net
84.242.4.253	A	b1cad.com