Robtex

Up: 203.185.44.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 203.185.46.0/24
Down right: 203.185.47.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.185.46.5	A+PTR	203185046005.res.dyn.ctinets.com
203.185.46.51	A+PTR	203185046051.res.dyn.ctinets.com
203.185.46.193	PTR	203185046193.res.dyn.ctinets.com
203.185.46.248	A+PTR	203185046248.res.dyn.ctinets.com
203.185.47.10	A	203185047010.static.ctinets.com
203.185.47.11	PTR	203185047011.static.ctinets.com
203.185.47.11	A	mail.active.com.hk
203.185.47.11	A	smtp.active.com.hk
203.185.47.12	PTR	203185047012.static.ctinets.com
203.185.47.12	A	xn--vows95d8je.com
203.185.47.12	A	ns2.active.hk
203.185.47.17	A+PTR	icggateway.i-cg.com
203.185.47.17	A	mail.i-cg.com
203.185.47.34	PTR	203185047034.static.ctinets.com
203.185.47.45	A	mail.quintum.cn
203.185.47.50	A	mail2.westpex.com.hk
203.185.47.53	A	203185047053.static.ctinets.com
203.185.47.58	A	ieshklab.com
203.185.47.106	A	*.hoverhk.com
203.185.47.106	A	mail.hoverhk.com
203.185.47.106	A	pop.hoverhk.com
203.185.47.194	A	hawksun.com
203.185.47.194	A	hawkwork.com
203.185.47.196	A+PTR	203185047196.static.ctinets.com
203.185.47.196	A	ilex.com.hk
203.185.47.196	A	mail.gei.com.hk
203.185.47.212	A+PTR	203185047212.static.ctinets.com
203.185.47.217	A	203185047217.static.ctinets.com
203.185.47.217	A	mktg.popularworld.com
203.185.47.238	A+PTR	203185047238.static.ctinets.com