Robtex

Up: 139.255.128.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 139.255.136.0/22
Down right: 139.255.140.0/22

IP	Type	Hostname
139.255.136.31	PTR	ln-static-139-255-136-31.link.net.id
139.255.136.117	PTR	ln-static-139-255-136-117.link.net.id
139.255.136.156	PTR	ln-static-139-255-136-156.link.net.id
139.255.136.156	A	neuro-designs.net
139.255.136.176	PTR	ln-static-139-255-136-176.link.net.id
139.255.138.16	PTR	ln-static-139-255-138-16.link.net.id
139.255.138.17	PTR	ln-static-139-255-138-17.link.net.id
139.255.138.27	PTR	ln-static-139-255-138-27.link.net.id
139.255.138.42	PTR	ln-static-139-255-138-42.link.net.id
139.255.138.43	PTR	ln-static-139-255-138-43.link.net.id
139.255.138.67	PTR	ln-static-139-255-138-67.link.net.id
139.255.138.74	PTR	ln-static-139-255-138-74.link.net.id
139.255.138.80	PTR	ln-static-139-255-138-80.link.net.id
139.255.138.89	PTR	ln-static-139-255-138-89.link.net.id
139.255.138.96	PTR	ln-static-139-255-138-96.link.net.id
139.255.138.104	PTR	ln-static-139-255-138-104.link.net.id
139.255.138.115	PTR	ln-static-139-255-138-115.link.net.id
139.255.138.144	PTR	ln-static-139-255-138-144.link.net.id
139.255.138.160	PTR	ln-static-139-255-138-160.link.net.id
139.255.138.186	PTR	ln-static-139-255-138-186.link.net.id
139.255.138.200	PTR	ln-static-139-255-138-200.link.net.id
139.255.138.210	PTR	ln-static-139-255-138-210.link.net.id
139.255.138.218	PTR	ln-static-139-255-138-218.link.net.id
139.255.138.227	PTR	ln-static-139-255-138-227.link.net.id
139.255.138.232	PTR	ln-static-139-255-138-232.link.net.id
139.255.138.250	PTR	ln-static-139-255-138-250.link.net.id
139.255.139.208	PTR	ln-static-139-255-139-208.link.net.id
139.255.142.66	PTR	ln-static-139-255-142-66.link.net.id
139.255.142.120	PTR	ln-static-139-255-142-120.link.net.id
139.255.142.217	PTR	ln-static-139-255-142-217.link.net.id