Robtex

Up: 203.161.4.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 203.161.4.0/25
Down right: 203.161.4.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.161.4.12	A+PTR	crmail.crc.com.hk
203.161.4.14	PTR	rip040014.resolink.com
203.161.4.21	PTR	rip040021.resolink.com
203.161.4.26	PTR	rip040026.resolink.com
203.161.4.29	PTR	rip040029.resolink.com
203.161.4.29	A	crmx8.chinaresources.com
203.161.4.34	PTR	rip040034.resolink.com
203.161.4.38	PTR	rip040038.resolink.com
203.161.4.38	A	mx.crlintex.com
203.161.4.42	PTR	rip040042.resolink.com
203.161.4.48	A	www.crproperty.com.hk
203.161.4.48	A	crproperty.com.hk
203.161.4.48	A	www.brim28.com
203.161.4.52	PTR	rip040052.resolink.com
203.161.4.52	A	www.crgas.com.hk
203.161.4.57	PTR	rip040057.resolink.com
203.161.4.57	A	www.crc.com.hk.cdn20.com
203.161.4.57	A	www.crpharm.com
203.161.4.58	PTR	rip040058.resolink.com
203.161.4.58	A	www.crc.com.hk.cdn20.com
203.161.4.58	A	www.crc.com.hk
203.161.4.75	PTR	rip040075.resolink.com
203.161.4.80	PTR	rip040080.resolink.com
203.161.4.80	A	resolink.com
203.161.4.80	A	nfh.com.hk
203.161.4.85	PTR	rip040085.resolink.com
203.161.4.97	PTR	rip040097.resolink.com
203.161.4.97	A	crmx13.crc.com.hk
203.161.4.98	PTR	rip040098.resolink.com
203.161.4.98	A	crmx14.crc.com.hk
203.161.4.173	PTR	rip040173.resolink.com
203.161.4.193	A+PTR	barracuda.cre.com.hk
203.161.4.193	PTR	spam.cre.com.hk
203.161.4.194	A+PTR	info.cre.com.hk
203.161.4.252	PTR	rip040252.resolink.com
203.161.4.252	A	ns4.resolink.com
203.161.4.253	A+PTR	ns3.resolink.com
203.161.4.254	PTR	ns1.resolink.com