Robtex

Up: 139.0.128.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 139.0.128.0/22
Down right: 139.0.132.0/22

IP	Type	Hostname
139.0.128.89	PTR	fm-dyn-139-0-128-89.fast.net.id
139.0.128.141	PTR	fm-dyn-139-0-128-141.fast.net.id
139.0.131.179	PTR	fm-dyn-139-0-131-179.fast.net.id
139.0.132.6	PTR	fm-dyn-139-0-132-6.fast.net.id
139.0.132.93	A	jesslyn2011.ddns.us
139.0.132.161	PTR	fm-dyn-139-0-132-161.fast.net.id
139.0.133.74	PTR	fm-dyn-139-0-133-74.fast.net.id
139.0.133.222	PTR	fm-dyn-139-0-133-222.fast.net.id
139.0.134.136	PTR	fm-dyn-139-0-134-136.fast.net.id
139.0.134.138	PTR	fm-dyn-139-0-134-138.fast.net.id
139.0.134.154	PTR	fm-dyn-139-0-134-154.fast.net.id
139.0.134.168	PTR	fm-dyn-139-0-134-168.fast.net.id
139.0.135.249	PTR	fm-dyn-139-0-135-249.fast.net.id