Robtex

Up: 191.53.0.0/16
Can't show all results, try to descend to a more specific CIDR
Down left: 191.53.0.0/18
Down right: 191.53.64.0/18
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
191.53.0.7	PTR	191-53-0-7.mastercabo.com.br
191.53.1.76	PTR	191-53-1-76.spo-dvl.axis1.com.br
191.53.2.7	PTR	191-53-2-7.dvl-wr.mastercabo.com.br
191.53.3.1	PTR	191-53-3-1.spo.axis1.com.br
191.53.3.5	PTR	191-53-3-5.spo.axis1.com.br
191.53.3.5	A	vel-tte.mastercabo.com.br
191.53.3.20	A	vel-cpj.mastercabo.com.br
191.53.3.52	PTR	191-53-3-52.spo.axis1.com.br
191.53.3.52	A	vel-lna.mastercabo.com.br
191.53.4.178	PTR	191-53-4-178.axis1.com.br
191.53.4.231	PTR	191-53-4-231.xe.core-fb.spo-uni.axis1.com.br
191.53.4.231	A	vel-lav.mastercabo.com.br
191.53.8.178	PTR	191-53-8-178.mastercabo.com.br
191.53.16.232	PTR	191-53-16-232.vga-wr.mastercabo.com.br
191.53.17.148	PTR	191-53-17-148.vga-wr.mastercabo.com.br
191.53.17.204	PTR	191-53-17-204.mastercabo.com.br
191.53.18.72	PTR	191-53-18-72.vga-wr.mastercabo.com.br
191.53.19.142	PTR	191-53-19-142.vga-wr.mastercabo.com.br
191.53.19.225	PTR	191-53-19-225.vga-wr.mastercabo.com.br
191.53.19.255	PTR	191-53-19-255.vga-wr.mastercabo.com.br
191.53.21.97	PTR	191-53-21-97.vga-wr.mastercabo.com.br
191.53.22.217	PTR	191-53-22-217.vga-wr.mastercabo.com.br
191.53.23.2	PTR	191-53-23-2.vga-wr.mastercabo.com.br
191.53.23.206	PTR	191-53-23-206.vga-wr.mastercabo.com.br
191.53.26.3	PTR	191-53-26-3.mastercabo.com.br
191.53.26.3	A	occ-0-2642-1123.1.nflxso.net
191.53.26.3	A	occ-0-2642-1567.1.nflxso.net
191.53.28.72	PTR	191-53-28-72.dvl-fb.mastercabo.com.br
191.53.30.81	PTR	191-53-30-81.dvl-fb.mastercabo.com.br
191.53.30.163	PTR	191-53-30-163.dvl-fb.mastercabo.com.br
191.53.30.163	A	boaventurasiqueira.com
191.53.34.144	PTR	191-53-34-144.mcl-cb.mastercabo.com.br
191.53.42.214	PTR	191-53-42-214.mastercabo.com.br
191.53.48.132	PTR	191-53-48-132.ija-fb.mastercabo.com.br
191.53.49.64	PTR	191-53-49-64.ija-fb.mastercabo.com.br
191.53.49.80	PTR	191-53-49-80.ija-fb.mastercabo.com.br
191.53.50.13	PTR	191-53-50-13.ija-fb.mastercabo.com.br
191.53.50.109	PTR	191-53-50-109.ija-fb.mastercabo.com.br
191.53.51.206	PTR	191-53-51-206.ija-fb.mastercabo.com.br
191.53.53.53	PTR	191-53-53-53.uni-fb.mastercabo.com.br
191.53.82.108	PTR	191-53-82-108.mcl-wr.mastercabo.com.br
191.53.82.108	A	alanfarley.ddns.net
191.53.96.209	PTR	191-53-96-209.mastercabo.com.br
191.53.98.14	PTR	191-53-98-14.uni-fb.mastercabo.com.br
191.53.104.72	PTR	191-53-104-72.vga-wr.mastercabo.com.br
191.53.104.103	PTR	191-53-104-103.vga-wr.mastercabo.com.br
191.53.104.142	PTR	191-53-104-142.vga-wr.mastercabo.com.br
191.53.104.183	PTR	191-53-104-183.vga-wr.mastercabo.com.br
191.53.105.19	PTR	191-53-105-19.vga-wr.mastercabo.com.br
191.53.105.241	PTR	191-53-105-241.vga-wr.mastercabo.com.br
191.53.112.4	PTR	191-53-112-4.mastercabo.com.br
191.53.112.5	PTR	191-53-112-5.bet-wr.mastercabo.com.br
191.53.112.155	PTR	191-53-112-155.bet-wr.mastercabo.com.br
191.53.112.170	PTR	191-53-112-170.bet-wr.mastercabo.com.br
191.53.118.89	PTR	191-53-118-89.vga-wr.mastercabo.com.br