Robtex

Up: 200.144.252.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 200.144.252.0/25
Down right: 200.144.252.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
200.144.252.15	PTR	sistemas.usp.br
200.144.252.17	A+PTR	arquivos.uspdigital.usp.br
200.144.252.17	A+PTR	sharefile.uspdigital.usp.br
200.144.252.17	A+PTR	sp.uspdigital.usp.br
200.144.252.92	A+PTR	idp.uspdigital.usp.br