Robtex

Up: 203.147.0.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 203.147.0.0/25
Down right: 203.147.0.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.147.0.1	A+PTR	aaa.ji-net.com
203.147.0.3	PTR	ns.ji-net.com
203.147.0.3	A	2.th.pool.ntp.org
203.147.0.4	A+PTR	ftp.ji-net.com
203.147.0.5	A+PTR	net1.ji-net.com
203.147.0.5	A	hostmaster.ji-net.com
203.147.0.5	A	pop3.backupmail.ji-net.com
203.147.0.6	PTR	venus.infonews.co.th
203.147.0.7	A	mail1.ji-net.com
203.147.0.8	A+PTR	member.ji-net.com
203.147.0.10	A+PTR	firewall.ji-net.com
203.147.0.11	A+PTR	db.ji-net.com
203.147.0.12	A	malai.ji-net.com
203.147.0.13	A+PTR	a3.ji-net.com
203.147.0.15	A+PTR	saleorders.ji-net.com
203.147.0.16	A+PTR	smart.ji-net.com
203.147.0.18	A+PTR	chaba2.ji-net.com
203.147.0.19	A+PTR	chaba.ji-net.com
203.147.0.21	A+PTR	nchaba.ji-net.com
203.147.0.30	PTR	proxy.ji-net.com
203.147.0.44	PTR	proxy.ji-net.com
203.147.0.45	PTR	r45.ji-net.com
203.147.0.48	A+PTR	proxy.ji-net.com
203.147.0.49	PTR	r49.ji-net.com
203.147.0.50	PTR	r50.ji-net.com
203.147.0.52	PTR	r52.ji-net.com
203.147.0.58	PTR	r58.ji-net.com
203.147.0.59	PTR	r59.ji-net.com
203.147.0.60	PTR	r60.ji-net.com
203.147.0.62	PTR	gateway.ji-net.com