Robtex

Up: 138.99.152.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 138.99.152.0/23
Down right: 138.99.154.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
138.99.152.8	PTR	assinantes-138-99-152-8.enprovedor.com.br
138.99.152.8	A	dns1.enprovedor.com.br
138.99.152.8	A	enprovedor.com.br
138.99.152.9	PTR	assinantes-138-99-152-9.enprovedor.com.br
138.99.152.9	A	dns2.enprovedor.com.br
138.99.152.29	PTR	assinantes-138-99-152-29.enprovedor.com.br
138.99.152.121	PTR	assinantes-138-99-152-121.enprovedor.com.br