Robtex

Up: 177.75.32.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 177.75.32.0/22
Down right: 177.75.36.0/22

IP	Type	Hostname
177.75.32.65	A+PTR	65-32-75-177.popcombo.com.br
177.75.36.126	PTR	36-75-177-126.cliente.brasilnet.net.br
177.75.37.41	PTR	37-75-177-41.cliente.brasilnet.net.br
177.75.37.132	PTR	37-75-177-132.cliente.brasilnet.net.br