Robtex

Up: 139.255.48.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 139.255.48.0/23
Down right: 139.255.50.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
139.255.48.21	PTR	ln-static-139-255-48-21.link.net.id
139.255.48.52	PTR	ln-static-139-255-48-52.link.net.id
139.255.48.52	A	www.adr-group.co.id
139.255.48.52	A	adr-group.co.id
139.255.48.179	PTR	ln-static-139-255-48-179.link.net.id
139.255.48.179	A	wspos.transfnb.com
139.255.48.179	A	coffeebean.co.id
139.255.48.181	A	career.baskin31.com
139.255.48.181	A	dashboard.baskin31.com
139.255.48.181	A	mail.baskin31.com
139.255.48.182	PTR	ln-static-139-255-48-182.link.net.id
139.255.48.182	A	mail.transburger.com
139.255.48.210	PTR	ln-static-139-255-48-210.link.net.id
139.255.49.34	PTR	mail.transfashionindonesia.com
139.255.49.34	PTR	ln-static-139-255-49-34.link.net.id
139.255.49.75	A	mail.depot.mscid.com
139.255.49.138	PTR	ln-static-139-255-49-138.link.net.id
139.255.49.138	A	*.sikuat.com
139.255.49.138	A	sikuat.com
139.255.49.139	PTR	ln-static-139-255-49-139.link.net.id
139.255.49.139	A	durindo.com
139.255.49.142	A	visicom2.com
139.255.49.172	PTR	ln-static-139-255-49-172.link.net.id
139.255.50.27	A	mail.trans-property.com
139.255.50.27	A	mail.transstudioworld.com
139.255.50.27	A	mail.transbrowser.org
139.255.50.29	A	airtight.transbrowser.org
139.255.50.29	A	jktid.transstudioworld.com
139.255.50.29	A	www.transstudioworld.com
139.255.50.37	A+PTR	necromancer.sctv.co.id
139.255.50.37	A	smtp2.ochanneltv.com
139.255.50.37	A	necromancer.sctv-jkt.tv
139.255.50.99	PTR	ln-static-139-255-50-99.link.net.id
139.255.50.145	A	spamfilter1.fajarpaper.com
139.255.50.234	PTR	ln-static-139-255-50-234.link.net.id
139.255.51.36	PTR	ln-static-139-255-51-36.link.net.id
139.255.51.36	A	oilclinic.com
139.255.51.45	A	mail.sentulland.com
139.255.51.49	PTR	ln-static-139-255-51-49.link.net.id
139.255.51.49	A	ns1.solwaygroup.co.id
139.255.51.50	A	ns2.solwaygroup.co.id
139.255.51.53	A+PTR	mail.solwaygroup.co.id
139.255.51.87	PTR	ln-static-139-255-51-87.link.net.id
139.255.51.123	PTR	ln-static-139-255-51-123.link.net.id
139.255.51.123	A	kaha.co.id
139.255.51.124	PTR	ln-static-139-255-51-124.link.net.id
139.255.51.124	A	kaha-holiday.com
139.255.51.124	A	agent.kaha-wholesaler.com
139.255.51.146	A	nsacloud.com
139.255.51.146	A	benefitrust.com
139.255.51.149	PTR	ln-static-139-255-51-149.link.net.id
139.255.51.152	A	www.centuryrealtime.com
139.255.51.152	A	centuryrealtime.com
139.255.51.188	PTR	ln-static-139-255-51-188.link.net.id
139.255.51.250	PTR	ln-static-139-255-51-250.link.net.id