Robtex

Up: 201.54.172.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 201.54.172.0/24
Down right: 201.54.173.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
201.54.172.118	A+PTR	porta118.blade1.as28624.oops.net.br
201.54.173.65	A+PTR	porta65.batalha2.as28624.oops.net.br
201.54.173.68	PTR	porta68.batalha2.as28624.oops.net.br
201.54.173.80	PTR	porta80.batalha2.as28624.oops.net.br
201.54.173.250	PTR	porta250.dmz-oops.as28624.oops.net.br
201.54.173.251	A+PTR	porta251.dns-oops.as28624.oops.net.br
201.54.173.252	PTR	porta252.dns3.as28624.oops.net.br
201.54.173.252	A	ns2-ipaddr.sistema.net.br
201.54.173.252	A	porta252.dmz-oops.as28624.oops.net.br
201.54.173.253	A+PTR	porta253.dmz-oops.as28624.oops.net.br