Robtex

Up: 172.241.224.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 172.241.232.0/22
Down right: 172.241.236.0/22

IP	Type	Hostname
172.241.232.0	PTR	172.241.232.0.rdns.ubiquity.io
172.241.233.194	PTR	172.241.233.194.rdns.as15003.net
172.241.234.12	PTR	172.241.234.12.rdns.as15003.net
172.241.234.173	PTR	172.241.234.173.rdns.ubiquity.io
172.241.235.65	PTR	172.241.235.65.rdns.as15003.net
172.241.235.128	PTR	172.241.235.128.rdns.as15003.net
172.241.235.226	PTR	172.241.235.226.rdns.as15003.net
172.241.237.155	PTR	172.241.237.155.rdns.as15003.net