Robtex

Up: 192.109.252.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 192.109.254.0/24
Down right: 192.109.255.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
192.109.254.100	A+PTR	slot.key4.net
192.109.254.100	A	ns02.decommissioned.net
192.109.254.100	A	ns.key4.net
192.109.254.174	PTR	p174.key4.net
192.109.254.185	PTR	p185.key4.net
192.109.254.208	A	p208.key4.net
192.109.254.218	A+PTR	p218.key4.net
192.109.254.250	A+PTR	p250.key4.net