Robtex

Up: 201.49.72.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 201.49.73.0/25
Down right: 201.49.73.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
201.49.73.78	PTR	mail.unialco.com.br
201.49.73.78	A	unialco.com.br
201.49.73.78	A	dns1.unialco.com.br
201.49.73.125	A	controlin.com.br
201.49.73.125	A	control-in.com.br
201.49.73.125	A	www.jacomino.com.br