Robtex

Up: 186.193.224.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 186.193.240.0/21
Down right: 186.193.248.0/21

IP	Type	Hostname
186.193.246.19	PTR	246-193.186-19.dynamic.frinet.com.br
186.193.246.21	A	uirapuru.ifam.edu.br
186.193.247.232	A	kct.dyndns.org
186.193.250.38	PTR	250-193.186-38.dynamic.frinet.com.br
186.193.250.39	PTR	250-193.186-39.dynamic.frinet.com.br
186.193.250.91	PTR	250-193.186-91.dynamic.frinet.com.br
186.193.251.234	PTR	251-193.186-234.dynamic.altaredecorporate.com.br
186.193.251.234	A	srvmail2.sousaecouto.com.br