Robtex

Up: 177.93.184.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 177.93.188.0/23
Down right: 177.93.190.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
177.93.188.10	A+PTR	amtsrv1.amtnet.net.br
177.93.188.10	A+PTR	speedtest.amtnet.net.br
177.93.188.10	A+PTR	speedtest2.amtnet.net.br
177.93.188.11	PTR	amtsrv2.amtnet.net.br
177.93.188.12	A	amtnet.net.br
177.93.189.146	A+PTR	177-93-189-146-static.amtnet.net.br