Robtex

Up: 191.253.208.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 191.253.208.0/23
Down right: 191.253.210.0/23

IP	Type	Hostname
191.253.208.1	PTR	cache.google.com
191.253.208.2	PTR	cache.google.com
191.253.208.12	PTR	cache.google.com
191.253.208.12	A	r1---sn-cg5npaoxu-bpbe.googlevideo.com
191.253.208.13	PTR	cache.google.com
191.253.208.13	A	r2.sn-cg5npaoxu-bpbe.googlevideo.com
191.253.208.14	PTR	cache.google.com
191.253.208.14	A	r3---sn-cg5npaoxu-bpbe.googlevideo.com
191.253.208.14	A	r3.sn-cg5npaoxu-bpbe.gvt1.com
191.253.208.82	PTR	191-253-208-82.cliente.brasilnet.net.br
191.253.208.82	A	ipv4-c001-jdf001-brasilnet-isp.1.oca.nflxvideo.net
191.253.208.132	PTR	191-253-208-132.cliente.brasilnet.net.br
191.253.211.59	PTR	211-253-191-59.cliente.brasilnet.net.br