Robtex

Up: 177.129.190.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 177.129.190.0/25
Down right: 177.129.190.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
177.129.190.10	A+PTR	mail.felt.com.br
177.129.190.27	A+PTR	rev27.insg.org.br
177.129.190.27	A	mail.insg.org.br
177.129.190.27	A	webmail.insg.org.br
177.129.190.28	A+PTR	rev28.insg.org.br
177.129.190.28	A	ns2.insg.org.br