Robtex

Up: 138.204.126.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 138.204.127.0/25
Down right: 138.204.127.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
138.204.127.2	PTR	nat.icabo.tv.br
138.204.127.2	A	ns2.icabo.tv.br
138.204.127.3	A	mail.icabo.tv.br
138.204.127.3	A	ns1.icabo.tv.br
138.204.127.3	A	icabo.tv.br
138.204.127.4	PTR	backup.icabo.tv.br
138.204.127.4	A	ns3.icabo.tv.br
138.204.127.6	A	cds.icabo.tv.br
138.204.127.37	A+PTR	37-127-204-138.icabo.tv.br