Robtex

Up: 138.204.112.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 138.204.116.0/23
Down right: 138.204.118.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
138.204.116.4	A+PTR	ns1.totalrv.com.br
138.204.116.4	A+PTR	mail.totalrv.com.br
138.204.116.4	PTR	www.totalrv.com.br
138.204.116.5	A+PTR	ns2.totalrv.com.br
138.204.116.5	A	totalrv.com.br
138.204.119.0	PTR	138-204-119-0.reverse.totalrv.com.br