Robtex

Up: 200.152.16.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 200.152.16.0/23
Down right: 200.152.18.0/23

IP	Type	Hostname
200.152.16.47	A	200.152.16.47.dynamic.neoviatelecom.com.br
200.152.16.85	A+PTR	200.152.16.85.dynamic.neoviatelecom.com.br
200.152.16.94	A+PTR	200.152.16.94.dynamic.neoviatelecom.com.br
200.152.18.119	PTR	200.152.18.119.dynamic.neoviatelecom.com.br