Robtex

Up: 140.0.144.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 140.0.152.0/22
Down right: 140.0.156.0/22

IP	Type	Hostname
140.0.152.211	PTR	fm-dyn-140-0-152-211.fast.net.id
140.0.153.2	PTR	fm-dyn-140-0-153-2.fast.net.id
140.0.153.25	PTR	fm-dyn-140-0-153-25.fast.net.id
140.0.153.50	PTR	fm-dyn-140-0-153-50.fast.net.id
140.0.153.130	PTR	fm-dyn-140-0-153-130.fast.net.id
140.0.153.145	PTR	fm-dyn-140-0-153-145.fast.net.id
140.0.153.218	PTR	fm-dyn-140-0-153-218.fast.net.id
140.0.153.219	PTR	fm-dyn-140-0-153-219.fast.net.id
140.0.153.242	PTR	fm-dyn-140-0-153-242.fast.net.id
140.0.156.202	PTR	fm-dyn-140-0-156-202.fast.net.id