Robtex

Up: 103.247.20.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 103.247.21.0/25
Down right: 103.247.21.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
103.247.21.2	A	mrtg.wifian.net.id
103.247.21.3	PTR	ip-103-247-21-3.wifian.net.id
103.247.21.4	A+PTR	ns3.wifian.net.id
103.247.21.6	PTR	ip-sub-21-6.wifian.id
103.247.21.6	A	mail.wifian.net.id
103.247.21.8	A	ns2.wifian.net.id
103.247.21.10	A+PTR	ns4.wifian.net.id
103.247.21.34	PTR	ip-103-247-21-34.wifian.net.id
103.247.21.59	A	mail.kespelsemarang.com
103.247.21.63	PTR	ip-103-247-21-63.wifian.net.id
103.247.21.64	PTR	ip-103-247-21-64.wifian.net.id
103.247.21.86	PTR	webmail.wifian.net.id
103.247.21.86	A	mail.pnetindonesia.com
103.247.21.86	A	webmail.askonas.org
103.247.21.142	PTR	ip-sub-21-142.wifian.id
103.247.21.142	A	wifian.net.id
103.247.21.142	A	www.trenggalekkab.go.id
103.247.21.179	PTR	ip-103-247-21-179.wifian.net.id
103.247.21.186	PTR	ip-103-247-21-186.wifian.net.id
103.247.21.195	PTR	ip-103-247-21-195.wifian.net.id
103.247.21.195	A	askonas.org
103.247.21.196	A	lppmhpsemarang.com