Robtex

Up: 131.108.48.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 131.108.48.0/23
Down right: 131.108.50.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
131.108.48.14	A	stn1.pronet.net.br
131.108.48.17	PTR	as61687-131-108-48-17.pronet.net.br
131.108.48.17	A	ns1.pronet.net.br
131.108.48.18	PTR	as61687-131-108-48-18.pronet.net.br
131.108.48.18	A	ns2.pronet.net.br
131.108.48.50	PTR	dns1.pronetse.com.br
131.108.48.50	A	pop.pronetse.com.br
131.108.48.50	A	portalpronet.com
131.108.48.51	PTR	dns2.pronetse.com.br
131.108.48.151	A+PTR	151-48-108-131.pronetse.com.br
131.108.51.10	PTR	as61687-131-108-51-10.pronet.net.br
131.108.51.10	A	deolhonaroca.com