Robtex

Up: 84.232.48.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 84.232.48.0/22
Down right: 84.232.52.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
84.232.50.10	PTR	martillo.ingemur.net
84.232.50.10	A	ns1.virson.net
84.232.50.10	A	yunque.virson.net
84.232.51.156	A	ns2.telebullas.es
84.232.51.157	A+PTR	ns.telebullas.es
84.232.51.181	PTR	ns3.valmarhost.es
84.232.51.200	A+PTR	tlf1-mur.airenetworks.es