Robtex

Up: 200.192.160.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 200.192.160.0/23
Down right: 200.192.162.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
200.192.160.5	A+PTR	web1.videolar.com
200.192.160.6	A	web2.videolar.com
200.192.160.32	PTR	host200-192-160-32.dh-c.net.br
200.192.160.168	A	smtp.aerochain.com
200.192.161.16	A+PTR	dhcp-server.amcham.com.br
200.192.161.19	A+PTR	alpha.amcham.com.br
200.192.161.27	PTR	sw01.amcham.com.br
200.192.161.33	PTR	www.delboniauriemo.com.br
200.192.162.96	PTR	host200-192-162-96.dh-c.net.br
200.192.163.124	PTR	host200-192-163-124.dh-c.net.br
200.192.163.124	A	smartads.com.br
200.192.163.194	PTR	email.asm.com.br
200.192.163.196	PTR	mx2.bonagura.com.br
200.192.163.225	PTR	host200-192-163-225.dh-c.net.br
200.192.163.225	A	files.cio.com.br
200.192.163.225	A	gameprobrasil.com
200.192.163.230	A	newsletter.idg.com.br