Robtex

Up: 177.131.28.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 177.131.28.0/25
Down right: 177.131.28.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
177.131.28.32	A+PTR	ns1.webflash.net.br
177.131.28.32	A	ns1.tvsom.com.br
177.131.28.33	A+PTR	ns2.webflash.net.br
177.131.28.33	A	ns2.tvsom.com.br
177.131.28.41	A	www.tvsom.com.br
177.131.28.41	A	tvsom.com.br
177.131.28.42	A	mx.tvsom.com.br
177.131.28.52	PTR	177.131.28.52.webflash.net.br
177.131.28.52	A	ns2.tvsom.com.br
177.131.28.53	A+PTR	177.131.28.53.webflash.net.br
177.131.28.53	A	ns1.tvsom.com.br
177.131.28.53	A	tvsom.com.br
177.131.28.62	A	ns3.tvsom.com.br
177.131.28.133	A+PTR	177.131.28.133.webflash.net.br
177.131.28.141	A+PTR	177.131.28.141.webflash.net.br
177.131.28.141	A	r2.sn-jvh20nxg8pjxcg-hj2e.googlevideo.com
177.131.28.209	A+PTR	177.131.28.209.webflash.net.br
177.131.28.209	A	scontent.fmcp2-1.fna.fbcdn.net
177.131.28.210	A+PTR	177.131.28.210.webflash.net.br
177.131.28.210	A	video.fmcp2-1.fna.fbcdn.net
177.131.28.224	A+PTR	177.131.28.224.webflash.net.br
177.131.28.224	A	z-p3-scontent.fmcp2-1.fna.fbcdn.net
177.131.28.225	A+PTR	177.131.28.225.webflash.net.br
177.131.28.225	A	instagram.fmcp2-1.fna.fbcdn.net
177.131.28.226	A+PTR	177.131.28.226.webflash.net.br
177.131.28.226	A	media.fmcp2-1.fna.whatsapp.net