Robtex

Up: 139.0.8.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 139.0.9.0/25
Down right: 139.0.9.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
139.0.9.1	PTR	ln-static-139-0-9-1.link.net.id
139.0.9.8	PTR	ln-static-139-0-9-8.link.net.id
139.0.9.13	PTR	ln-static-139-0-9-13.link.net.id
139.0.9.27	PTR	ln-static-139-0-9-27.link.net.id
139.0.9.27	A	mail.innowareindonesia.co.id
139.0.9.28	PTR	ln-static-139-0-9-28.link.net.id
139.0.9.39	PTR	ln-static-139-0-9-39.link.net.id
139.0.9.43	PTR	mail.triputra-group.com
139.0.9.50	PTR	blsmtp01.bni-life.co.id
139.0.9.60	A	workspace.arghajata.com
139.0.9.89	PTR	ln-static-139-0-9-89.link.net.id
139.0.9.121	PTR	ln-static-139-0-9-121.link.net.id
139.0.9.126	PTR	ln-static-139-0-9-126.link.net.id
139.0.9.130	PTR	ln-static-139-0-9-130.link.net.id
139.0.9.130	A	mail.hartmaninternational.com
139.0.9.130	A	mail.castlefordinvestment.com
139.0.9.131	PTR	ln-static-139-0-9-131.link.net.id
139.0.9.131	A	mail.castlefordinvestment.com
139.0.9.131	A	andromeda.radinka.co.id
139.0.9.138	PTR	mail.jec.co.id
139.0.9.139	PTR	ln-static-139-0-9-139.link.net.id
139.0.9.140	PTR	mail.jecit.web.id
139.0.9.163	A+PTR	webmail.triputra-group.com
139.0.9.184	PTR	ln-static-139-0-9-184.link.net.id
139.0.9.184	A	chora.co.id
139.0.9.187	PTR	ln-static-139-0-9-187.link.net.id
139.0.9.187	A	mail.commercial-bantenport.com
139.0.9.187	A	ns2.inibae.com
139.0.9.188	A+PTR	mail.chora.co.id
139.0.9.188	A	mx.inibae.com
139.0.9.193	PTR	ln-static-139-0-9-193.link.net.id
139.0.9.193	A	navaplus-app.com
139.0.9.200	A+PTR	mail.navaplus.com
139.0.9.200	A	brainstorm-communications.com
139.0.9.200	A	mail.advisindo.com
139.0.9.227	A+PTR	imqweb.imq21.com
139.0.9.227	A	ftp.imq21.com
139.0.9.227	A	wap.imq21.com
139.0.9.246	PTR	ln-static-139-0-9-246.link.net.id