Robtex

Up: 168.196.176.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 168.196.180.0/23
Down right: 168.196.182.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
168.196.180.0	PTR	168-196-180-0.inbnet.com.br
168.196.181.58	PTR	www.capaodacanoa.rs.gov.br
168.196.181.58	A	capaodacanoa.rs.gov.br
168.196.181.123	PTR	168-196-181-123.inbnet.com.br
168.196.181.145	PTR	168-196-181-145.inbnet.com.br
168.196.181.145	A	scontent.fpoa17-1.fna.fbcdn.net
168.196.181.161	PTR	168-196-181-161.inbnet.com.br
168.196.181.161	A	instagram.fpoa17-1.fna.fbcdn.net
168.196.181.236	PTR	168-196-181-236.inbnet.com.br
168.196.181.236	A	r1.sn-poccg-2v5e.gvt1.com
168.196.181.237	PTR	168-196-181-237.inbnet.com.br
168.196.181.237	A	r2.sn-poccg-2v5e.googlevideo.com
168.196.181.237	A	r2.sn-poccg-2v5e.gvt1.com
168.196.183.31	A+PTR	dns1.alcos.me
168.196.183.31	A	alcos.me
168.196.183.139	PTR	168-196-183-139.inbnet.com.br
168.196.183.255	PTR	168-196-183-255.inbnet.com.br