Robtex

Up: 177.128.128.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 177.128.128.0/25
Down right: 177.128.128.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
177.128.128.0	PTR	ge-01.static.knetprovedor.com.br
177.128.128.2	PTR	reserved.static.knetprovedor.com.br
177.128.128.3	PTR	dns3.knetprovedor.com.br
177.128.128.6	A+PTR	ns1.knetprovedor.com.br
177.128.128.6	A	gprint.com.br
177.128.128.6	A	mail.knetprovedor.com.br
177.128.128.7	A+PTR	ns2.knetprovedor.com.br