Robtex

Up: 203.186.50.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 203.186.50.0/25
Down right: 203.186.50.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.186.50.30	A	203186050030.static.ctinets.com
203.186.50.54	A+PTR	203186050054.static.ctinets.com
203.186.50.130	PTR	203186050130.static.ctinets.com
203.186.50.130	A	hongshuigarden.com
203.186.50.130	A	www.positivechange.hk
203.186.50.190	A	remote.pshktechhkserver.com
203.186.50.206	A+PTR	203186050206.static.ctinets.com
203.186.50.226	A+PTR	203186050226.static.ctinets.com
203.186.50.240	A+PTR	203186050240.static.ctinets.com