Robtex

Up: 5.63.16.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 5.63.24.0/22
Down right: 5.63.28.0/22

IP	Type	Hostname
5.63.24.0	PTR	0.24.63.5.resolve.splio.com
5.63.24.1	PTR	1.24.63.5.resolve.splio.com
5.63.24.2	PTR	2.24.63.5.resolve.splio.com
5.63.24.5	A	pl-mt5.splio.com
5.63.24.7	A	pl-mt7.splio.com
5.63.24.8	A	pl-mt8.splio.com
5.63.24.9	A+PTR	pl-mt9.splio.com
5.63.24.16	A	pl-mt16.splio.com
5.63.24.43	A	pl-mt43.splio.com
5.63.24.56	PTR	pl-mt56.splio.com
5.63.24.82	A+PTR	pl-mt82.splio.com
5.63.24.122	A+PTR	pl-mt122.splio.com
5.63.24.131	A+PTR	pl-mt131.splio.com
5.63.25.105	A+PTR	cn-mt105.splio.com
5.63.26.31	A	br-mt31.splio.com.br
5.63.26.75	A+PTR	br-mt75.splio.com.br
5.63.26.103	A	br-mt103.splio.com.br
5.63.26.107	PTR	br-mt107.splio.com.br
5.63.26.109	A	br-mt109.splio.com.br
5.63.26.161	A+PTR	br-mt161.splio.com.br
5.63.26.226	PTR	br-mt226.splio.com.br
5.63.26.228	A	br-mt228.splio.com.br
5.63.26.235	A	br-mt235.splio.com.br
5.63.26.238	A	br-mt238.splio.com.br
5.63.26.239	A	br-mt239.splio.com.br
5.63.27.0	A+PTR	0.27.63.5.resolve.splio.com
5.63.27.1	A+PTR	1.27.63.5.resolve.splio.com
5.63.27.2	A+PTR	2.27.63.5.resolve.splio.com
5.63.27.3	A+PTR	3.27.63.5.resolve.splio.com
5.63.27.8	A+PTR	8.27.63.5.resolve.splio.com
5.63.27.8	PTR	pl-mt8.splio.com
5.63.27.9	A+PTR	9.27.63.5.resolve.splio.com
5.63.27.9	PTR	pl-mt9.splio.com
5.63.27.12	PTR	es-mt12.splio.com
5.63.27.100	PTR	es-mt100.splio.com
5.63.27.101	PTR	es-mt101.splio.com
5.63.27.118	A+PTR	es-mt118.splio.com
5.63.27.254	PTR	254.27.63.5.resolve.splio.com
5.63.27.255	PTR	255.27.63.5.resolve.splio.com
5.63.28.0	PTR	0.24.63.5.resolve.splio.com
5.63.28.1	PTR	1.24.63.5.resolve.splio.com
5.63.28.2	PTR	2.24.63.5.resolve.splio.com