Robtex

Up: 177.87.160.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 177.87.160.0/25
Down right: 177.87.160.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
177.87.160.2	A+PTR	sabre.flexanet.net.br
177.87.160.3	A+PTR	177-87-160-3.flexanet.net.br
177.87.160.10	A+PTR	177-87-160-10.flexanet.net.br
177.87.160.14	PTR	177-87-160-14.flexanet.net.br
177.87.160.14	A	ns1.cksonline.net
177.87.160.14	A	parauapebas.com.br
177.87.160.15	A+PTR	mail1.flexanet.net.br
177.87.160.15	A	ns2.cksonline.net
177.87.160.16	A+PTR	mail.flexanet.net.br
177.87.160.16	A	ns.cksonline.net
177.87.160.16	A	smtp.cksonline.net
177.87.160.17	A+PTR	ns4.flexanet.net.br
177.87.160.17	A	ns3.cksonline.net
177.87.160.20	A+PTR	ns1.flexanet.net.br
177.87.160.20	A	flexanet.net.br
177.87.160.20	A	cksonline.net
177.87.160.21	A+PTR	ns2.flexanet.net.br