Robtex

Up: 200.175.4.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 200.175.4.0/25
Down right: 200.175.4.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
200.175.4.2	PTR	200.175.4.2.static.gvt.net.br
200.175.4.6	PTR	200.175.4.6.static.gvt.net.br
200.175.4.15	PTR	mail3.rasinformatica.com.br
200.175.4.15	A	ns3.rasit.com.br
200.175.4.21	PTR	200.175.4.21.static.gvt.net.br
200.175.4.29	PTR	200.175.4.29.static.gvt.net.br
200.175.4.44	PTR	200.175.4.44
200.175.4.44	A	ns2.tipstelecom.com
200.175.4.44	A	ns1.valvicon.com.br
200.175.4.50	PTR	200.175.4.50.static.gvt.net.br
200.175.4.77	PTR	200.175.4.77.static.gvt.net.br
200.175.4.104	PTR	200.175.4.104.static.gvt.net.br
200.175.4.133	PTR	200.175.4.133.static.gvt.net.br
200.175.4.137	PTR	200.175.4.137.static.gvt.net.br
200.175.4.167	PTR	mta01.sekur.com.br
200.175.4.183	PTR	mail.rasinformatica.com.br
200.175.4.199	PTR	200.175.4.199.static.gvt.net.br
200.175.4.214	PTR	office.consultcorp.com.br
200.175.4.214	A	extranet.consultcorp.com.br
200.175.4.216	A+PTR	compasa.com.br
200.175.4.223	A	f1700.com.br
200.175.4.225	PTR	200.175.4.225.static.gvt.net.br
200.175.4.228	PTR	200.175.4.228.static.gvt.net.br