Robtex

Up: 177.38.136.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 177.38.136.0/25
Down right: 177.38.136.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
177.38.136.2	A+PTR	ns1.paraopebanet.com.br
177.38.136.2	A	paraopebanet.com.br
177.38.136.2	A	ns1.paraopeba.com
177.38.136.3	A+PTR	ns2.paraopebanet.com.br
177.38.136.3	A	proxy.paraopeba.com
177.38.136.4	A+PTR	mail.paraopebanet.com.br
177.38.136.4	A	smtp.paraopeba.com
177.38.136.4	A	webmail.paraopeba.com
177.38.136.19	PTR	mail.paraopebanet.com.br
177.38.136.19	A	mail.postotrevao.com.br
177.38.136.19	A	mail.jbuniverso.com.br
177.38.136.21	PTR	ns3.paraopebanet.com.br
177.38.136.21	A	ns1.paraopeba.com
177.38.136.21	A	mail.paraopebanet.com.br
177.38.136.22	A+PTR	ns4.paraopebanet.com.br
177.38.136.22	A	ns2.paraopeba.com
177.38.136.22	A	ns2.postotrevao.com.br