Robtex

Up: 177.38.40.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 177.38.42.0/24
Down right: 177.38.43.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
177.38.43.10	PTR	mx1.villarossa.com.br
177.38.43.44	A	ns1.spacenetwork.com.br
177.38.43.45	PTR	45-43-38-177.spacecloud.com.br
177.38.43.45	A	ns2.spacenetwork.com.br
177.38.43.118	PTR	118-43-38-177.spacecloud.com.br
177.38.43.227	A+PTR	ns1.netzon.host
177.38.43.227	A	ns1.hoststyle.com.br
177.38.43.228	PTR	228-43-38-177.spacecloud.com.br
177.38.43.228	A	hoststyle.com.br
177.38.43.228	A	assistekinformatica.com.br