Robtex

Up: 170.84.140.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 170.84.142.0/24
Down right: 170.84.143.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
170.84.142.143	PTR	143-142-84.170.provedorhiperlink.com.br
170.84.142.223	PTR	223-142-84-170.provedorhiperlink.com.br
170.84.143.0	A	0-143-84-170.provedorhiperlink.com.br
170.84.143.118	PTR	118-143-84.170.provedorhiperlink.com.br
170.84.143.250	PTR	250-143-84.170.provedorhiperlink.com.br
170.84.143.250	A	ns1.provedorhiperlink.com.br
170.84.143.250	A	net.provedorhiperlink.com.br
170.84.143.251	A+PTR	ns2.provedorhiperlink.com.br