Robtex

Up: 191.253.192.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 191.253.192.0/24
Down right: 191.253.193.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
191.253.192.197	A	seguro.unimedsm.com.br
191.253.192.206	A	mail.unimedsm.com.br
191.253.192.214	A	mail2.mordistribuidora.com.br
191.253.193.131	PTR	aspam02.avatohosting.com.br
191.253.193.131	A	aspam07.avato.com.br
191.253.193.165	PTR	aspam03.avatohosting.com.br
191.253.193.179	A	webmail.redesul.com.br
191.253.193.179	A	mail.conexserra.com.br
191.253.193.179	A	mail2.redesul.com.br