Robtex

Up: 184.53.0.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 184.53.16.0/21
Down right: 184.53.24.0/21

IP	Type	Hostname
184.53.16.1	PTR	host18453116.direcway.com
184.53.16.48	PTR	host184534816.direcway.com
184.53.16.128	PTR	host1845312816.direcway.com
184.53.16.161	PTR	host1845316116.direcway.com
184.53.22.146	PTR	host1845314622.direcway.com