Robtex

Up: 45.176.184.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 45.176.184.0/23
Down right: 45.176.186.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
45.176.184.108	A+PTR	108-184-176-45.pcinternet.com.br
45.176.187.2	A+PTR	ns1.pcinternet.com.br
45.176.187.2	A	net.pcinternet.com.br
45.176.187.2	A	pop.pcinternet.com.br
45.176.187.3	PTR	ns2.pcinternet.com.br