Robtex

Up: 174.33.128.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 174.33.144.0/21
Down right: 174.33.152.0/21

IP	Type	Hostname
174.33.144.2	PTR	host17433002144.direcway.com
174.33.144.66	PTR	host174330066144.direcway.com
174.33.147.162	PTR	host1743300162147.direcway.com
174.33.150.2	PTR	host17433002150.direcway.com
174.33.150.49	PTR	host174330049150.direcway.com
174.33.152.35	PTR	host174330035152.direcway.com
174.33.154.176	PTR	host1743300176154.direcway.com