Robtex

Up: 110.139.80.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 110.139.84.0/23
Down right: 110.139.86.0/23

IP	Type	Hostname
110.139.84.17	PTR	17.subnet110-139-84.speedy.telkom.net.id
110.139.84.41	PTR	41.subnet110-139-84.speedy.telkom.net.id
110.139.84.54	PTR	54.subnet110-139-84.speedy.telkom.net.id
110.139.84.122	PTR	122.subnet110-139-84.speedy.telkom.net.id
110.139.84.176	PTR	176.subnet110-139-84.speedy.telkom.net.id
110.139.84.236	PTR	236.subnet110-139-84.speedy.telkom.net.id
110.139.84.239	PTR	239.subnet110-139-84.speedy.telkom.net.id
110.139.84.241	PTR	241.subnet110-139-84.speedy.telkom.net.id
110.139.85.93	PTR	93.subnet110-139-85.speedy.telkom.net.id
110.139.85.243	PTR	243.subnet110-139-85.speedy.telkom.net.id
110.139.86.25	PTR	25.subnet110-139-86.speedy.telkom.net.id
110.139.86.148	PTR	148.subnet110-139-86.speedy.telkom.net.id
110.139.86.173	PTR	173.subnet110-139-86.speedy.telkom.net.id
110.139.86.242	PTR	242.subnet110-139-86.speedy.telkom.net.id
110.139.87.56	PTR	56.subnet110-139-87.speedy.telkom.net.id
110.139.87.233	PTR	233.subnet110-139-87.speedy.telkom.net.id
110.139.87.243	PTR	243.subnet110-139-87.speedy.telkom.net.id