Robtex

Up: 203.142.12.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 203.142.12.0/25
Down right: 203.142.12.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.142.12.24	A	mimas.webvis.net
203.142.12.40	A	justlink-ltd.com
203.142.12.40	A	mail.dragon-industrial.com
203.142.12.48	A+PTR	yangzi.alertsite.com
203.142.12.49	PTR	yangzi2.alertsite.com
203.142.12.55	A	sh3w.com.cn
203.142.12.55	A	ccehn.com
203.142.12.55	A	shqyang.com
203.142.12.60	PTR	mail.kuaiqing.com
203.142.12.60	A	kindgo.com
203.142.12.60	A	mail.shaanxident.com
203.142.12.61	A	www.new-windows.com.cn
203.142.12.61	A	52gfish.com
203.142.12.61	A	new-windows.com.cn
203.142.12.76	A	mail.bjzqjr.com
203.142.12.76	A	xachaye.com
203.142.12.76	A	mail.kindmax.net
203.142.12.91	A	mail.xn--mnq657cmka008i.com
203.142.12.91	A	xn--mnq657cmka008i.com
203.142.12.98	A+PTR	shvz01.webvis.net
203.142.12.99	A+PTR	shvps.webvis.net
203.142.12.100	PTR	shvps.webvis.net
203.142.12.101	PTR	shvps.webvis.net
203.142.12.102	A	vps0302-sh.webvis.net
203.142.12.104	PTR	shvps.webvis.net
203.142.12.105	PTR	shvps.webvis.net
203.142.12.106	PTR	shvps.webvis.net
203.142.12.107	PTR	shvps.webvis.net
203.142.12.108	PTR	shvps.webvis.net
203.142.12.109	PTR	shvps.webvis.net
203.142.12.110	PTR	shvps.webvis.net
203.142.12.111	PTR	shvps.webvis.net
203.142.12.112	PTR	shvps.webvis.net
203.142.12.113	PTR	shvps.webvis.net
203.142.12.114	PTR	shvps.webvis.net
203.142.12.115	PTR	shvps.webvis.net
203.142.12.116	PTR	shvps.webvis.net
203.142.12.117	PTR	shvps.webvis.net
203.142.12.118	PTR	shvps.webvis.net
203.142.12.119	PTR	shvps.webvis.net
203.142.12.126	A	shipkvm.webvis.net
203.142.12.210	PTR	beijing2.alertsite.com
203.142.12.211	PTR	beijing3.alertsite.com.12.142.203.in-addr.arpa