Robtex

Up: 184.52.64.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 184.52.72.0/22
Down right: 184.52.76.0/22

IP	Type	Hostname
184.52.72.19	PTR	host184521972.direcway.com
184.52.72.67	PTR	host184526772.direcway.com
184.52.72.72	PTR	host184527272.direcway.com
184.52.72.138	PTR	host1845213872.direcway.com
184.52.72.161	PTR	host1845216172.direcway.com