Robtex

Up: 163.114.216.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 163.114.217.0/25
Down right: 163.114.217.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
163.114.217.17	PTR	ns2fgp.name.com
163.114.217.17	PTR	ns2nsy.name.com
163.114.217.17	PTR	ns2fkr.name.com
163.114.217.49	PTR	ns4cfn.name.com
163.114.217.49	PTR	ns4qxz.name.com
163.114.217.49	PTR	ns4lny.name.com