Robtex

Up: 201.17.30.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 201.17.31.0/25
Down right: 201.17.31.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
201.17.31.7	PTR	c9111f07.akamai.rjo.virtua.com.br
201.17.31.12	PTR	c9111f0c.akamai.rjo.virtua.com.br
201.17.31.16	PTR	c9111f10.akamai.rjo.virtua.com.br
201.17.31.29	PTR	c9111f1d.akamai.rjo.virtua.com.br
201.17.31.76	PTR	c9111f4c.virtua.com.br
201.17.31.76	A	r1.sn-oxunxg8pjvn-bpbe.gvt1.com
201.17.31.76	A	r1---sn-oxunxg8pjvn-bpbe.googlevideo.com
201.17.31.77	A	r2---sn-oxunxg8pjvn-bpbe.googlevideo.com
201.17.31.77	A	r2.sn-oxunxg8pjvn-bpbe.googlevideo.com
201.17.31.78	PTR	c9111f4e.virtua.com.br
201.17.31.78	A	r3---sn-oxunxg8pjvn-bpbe.googlevideo.com
201.17.31.78	A	r3.sn-oxunxg8pjvn-bpbe.googlevideo.com
201.17.31.79	A	r4---sn-oxunxg8pjvn-bpbe.c.pack.google.com
201.17.31.79	A	r4.sn-oxunxg8pjvn-bpbe.gvt1.com
201.17.31.79	A	r4.sn-oxunxg8pjvn-bpbe.c.pack.google.com
201.17.31.80	A	r5---sn-oxunxg8pjvn-bpbe.googlevideo.com
201.17.31.81	PTR	c9111f51.virtua.com.br
201.17.31.81	A	r6.sn-oxunxg8pjvn-bpbe.googlevideo.com
201.17.31.81	A	r6.sn-oxunxg8pjvn-bpbe.gvt1.com
201.17.31.82	PTR	c9111f52.virtua.com.br
201.17.31.82	A	r7---sn-oxunxg8pjvn-bpbe.gvt1.com
201.17.31.82	A	r7---sn-oxunxg8pjvn-bpbe.googlevideo.com
201.17.31.83	PTR	c9111f53.virtua.com.br
201.17.31.83	A	r8.sn-oxunxg8pjvn-bpbe.googlevideo.com
201.17.31.83	A	r8---sn-oxunxg8pjvn-bpbe.googlevideo.com
201.17.31.86	PTR	c9111f56.virtua.com.br
201.17.31.133	PTR	c9111f85.terra-tv.rjo.virtua.com.br
201.17.31.133	A	ipv4-c008-gig003-claro-br-net-isp.1.oca.nflxvideo.net
201.17.31.137	PTR	c9111f89.terra-tv.rjo.virtua.com.br
201.17.31.137	A	ipv4-c007-gig003-claro-br-net-isp.1.oca.nflxvideo.net
201.17.31.141	PTR	c9111f8d.terra-tv.rjo.virtua.com.br
201.17.31.141	A	ipv4-c006-gig003-claro-br-net-isp.1.oca.nflxvideo.net
201.17.31.146	PTR	c9111f92.terra-tv.rjo.virtua.com.br
201.17.31.146	A	ipv4-c004-gig003-claro-br-net-isp.1.oca.nflxvideo.net
201.17.31.170	PTR	c9111faa.virtua.com.br
201.17.31.170	A	occ-0-433-1380.1.nflxso.net
201.17.31.170	A	occ-0-433-1123.1.nflxso.net
201.17.31.174	PTR	c9111fae.virtua.com.br
201.17.31.174	A	occ-0-433-1380.1.nflxso.net
201.17.31.174	A	occ-0-433-1123.1.nflxso.net
201.17.31.191	PTR	c9111fbf.virtua.com.br