Robtex

Up: 139.193.248.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 139.193.252.0/23
Down right: 139.193.254.0/23

IP	Type	Hostname
139.193.253.10	PTR	fm-dyn-139-193-253-10.fast.net.id
139.193.253.16	PTR	fm-dyn-139-193-253-16.fast.net.id
139.193.253.17	PTR	fm-dyn-139-193-253-17.fast.net.id
139.193.253.18	PTR	fm-dyn-139-193-253-18.fast.net.id
139.193.253.27	PTR	fm-dyn-139-193-253-27.fast.net.id
139.193.253.34	PTR	fm-dyn-139-193-253-34.fast.net.id
139.193.253.35	PTR	fm-dyn-139-193-253-35.fast.net.id
139.193.253.40	PTR	fm-dyn-139-193-253-40.fast.net.id
139.193.253.42	PTR	fm-dyn-139-193-253-42.fast.net.id
139.193.253.73	PTR	fm-dyn-139-193-253-73.fast.net.id
139.193.253.74	PTR	fm-dyn-139-193-253-74.fast.net.id
139.193.253.88	PTR	fm-dyn-139-193-253-88.fast.net.id
139.193.253.89	PTR	fm-dyn-139-193-253-89.fast.net.id
139.193.253.90	PTR	fm-dyn-139-193-253-90.fast.net.id
139.193.253.132	PTR	fm-dyn-139-193-253-132.fast.net.id
139.193.253.138	PTR	fm-dyn-139-193-253-138.fast.net.id
139.193.255.18	PTR	fm-dyn-139-193-255-18.fast.net.id
139.193.255.21	PTR	fm-dyn-139-193-255-21.fast.net.id
139.193.255.29	PTR	fm-dyn-139-193-255-29.fast.net.id
139.193.255.71	PTR	fm-dyn-139-193-255-71.fast.net.id
139.193.255.77	PTR	fm-dyn-139-193-255-77.fast.net.id
139.193.255.81	PTR	fm-dyn-139-193-255-81.fast.net.id
139.193.255.113	PTR	fm-dyn-139-193-255-113.fast.net.id
139.193.255.132	PTR	fm-dyn-139-193-255-132.fast.net.id
139.193.255.145	PTR	fm-dyn-139-193-255-145.fast.net.id
139.193.255.147	PTR	fm-dyn-139-193-255-147.fast.net.id
139.193.255.163	PTR	fm-dyn-139-193-255-163.fast.net.id
139.193.255.186	PTR	fm-dyn-139-193-255-186.fast.net.id
139.193.255.221	PTR	fm-dyn-139-193-255-221.fast.net.id
139.193.255.224	PTR	fm-dyn-139-193-255-224.fast.net.id
139.193.255.229	PTR	fm-dyn-139-193-255-229.fast.net.id
139.193.255.234	PTR	fm-dyn-139-193-255-234.fast.net.id
139.193.255.239	PTR	fm-dyn-139-193-255-239.fast.net.id
139.193.255.255	PTR	fm-dyn-139-193-255-255.fast.net.id