Robtex

Up: 172.255.56.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 172.255.58.0/24
Down right: 172.255.59.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
172.255.58.42	PTR	172.255.58.42.rdns.as15003.net
172.255.58.43	PTR	172.255.58.43.rdns.as15003.net
172.255.58.202	A	energycompass.com
172.255.58.202	A	energyintelresearch.com
172.255.58.202	A	energybrief.com