Robtex

Up: 139.0.12.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 139.0.14.0/24
Down right: 139.0.15.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
139.0.14.1	PTR	mail.test.com
139.0.14.1	PTR	ln-static-139-0-14-1.link.net.id
139.0.14.101	PTR	ln-static-139-0-14-101.link.net.id
139.0.15.6	PTR	ln-static-139-0-15-6.link.net.id
139.0.15.18	PTR	ln-static-139-0-15-18.link.net.id
139.0.15.21	PTR	ln-static-139-0-15-21.link.net.id
139.0.15.21	A	mail.hicoop.com
139.0.15.22	PTR	ln-static-139-0-15-22.link.net.id
139.0.15.22	A	interlogdigitalindonesia.com
139.0.15.22	A	hicoop.com
139.0.15.26	PTR	ln-static-139-0-15-26.link.net.id
139.0.15.27	PTR	ln-static-139-0-15-27.link.net.id
139.0.15.28	A	mail.griyasentosa.com
139.0.15.28	A	mail.28frames.com
139.0.15.28	A	mail.telesindomediaindonesia.com
139.0.15.29	PTR	ln-static-139-0-15-29.link.net.id
139.0.15.30	PTR	ln-static-139-0-15-30.link.net.id
139.0.15.30	A	ns1.hicoop.com
139.0.15.30	A	ns1.telesindomedia.com
139.0.15.50	A	ns1.bankpundi.co.id
139.0.15.50	A	ns1.bpdbanten.co.id
139.0.15.51	A+PTR	mail.bankbanten.co.id
139.0.15.52	PTR	ln-static-139-0-15-52.link.net.id
139.0.15.73	PTR	ln-static-139-0-15-73.link.net.id
139.0.15.73	A	lintar.tarumanagara.ac.id
139.0.15.90	PTR	mail.bbuy.co.id
139.0.15.163	PTR	ln-static-139-0-15-163.link.net.id
139.0.15.163	A	mail.air-rinjani.com
139.0.15.163	A	mail.tedco.co.id
139.0.15.178	PTR	ln-static-139-0-15-178.link.net.id
139.0.15.180	PTR	ln-static-139-0-15-180.link.net.id
139.0.15.186	PTR	ln-static-139-0-15-186.link.net.id
139.0.15.186	A	www.lippo-cikarang.com
139.0.15.186	A	lippo-cikarang.com
139.0.15.187	PTR	mail2.lippo-cikarang.com
139.0.15.228	PTR	ln-static-139-0-15-228.link.net.id
139.0.15.233	PTR	ln-static-139-0-15-233.link.net.id
139.0.15.245	PTR	ln-static-139-0-15-245.link.net.id