Robtex

Up: 123.242.230.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 123.242.231.0/25
Down right: 123.242.231.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
123.242.231.42	A	123-242-231-42.sunnyvisiondatacenter.com
123.242.231.51	A	123-242-231-51.sunnyvisiondatacenter.com
123.242.231.60	PTR	123-242-231-60.as4646.net
123.242.231.60	A	smtp3.hkti.net
123.242.231.65	PTR	123-242-231-65.sunnyvision.com
123.242.231.65	A	mail.hktidns.com
123.242.231.67	A	kohconcepts.com
123.242.231.67	A	mail.kohconcepts.com
123.242.231.80	PTR	123-242-231-80.sunnyvision.com
123.242.231.94	PTR	123-242-231-94.as4646.net
123.242.231.100	A	123-242-231-100.sunnyvisiondatacenter.com
123.242.231.103	PTR	123-242-231-103.sunnyvision.com
123.242.231.104	A	123-242-231-104.sunnyvisiondatacenter.com
123.242.231.108	PTR	123-242-231-108.as4646.net
123.242.231.114	PTR	123-242-231-114.sunnyvision.com
123.242.231.122	PTR	123-242-231-122.as4646.net
123.242.231.124	A	chelleson.com.hk
123.242.231.135	PTR	123-242-231-135.as4646.net
123.242.231.154	PTR	123-242-231-154.as4646.net
123.242.231.155	PTR	123-242-231-155.as4646.net
123.242.231.163	PTR	123-242-231-163.sunnyvision.com
123.242.231.168	A	suryapoker.com
123.242.231.169	PTR	mail.royalrich-china.com
123.242.231.172	A+PTR	srv26.rmid.de
123.242.231.172	A	srv13.rmid.de
123.242.231.172	A	mail.suzhouexpats.com
123.242.231.175	A	123-242-231-175.sunnyvisiondatacenter.com
123.242.231.176	A	mediaonchip.com
123.242.231.176	A	mail.mediaonchip.com
123.242.231.176	A	www.mediaonchip.com
123.242.231.177	PTR	123-242-231-177.sunnyvision.com
123.242.231.177	A	bgf.com.hk
123.242.231.177	A	cnicloud.net
123.242.231.181	A	123-242-231-181.sunnyvisiondatacenter.com
123.242.231.183	A	123-242-231-183.sunnyvisiondatacenter.com
123.242.231.185	A	123-242-231-185.sunnyvisiondatacenter.com
123.242.231.186	A	123-242-231-186.sunnyvisiondatacenter.com
123.242.231.187	PTR	123-242-231-187.sunnyvision.com
123.242.231.188	PTR	123-242-231-188.sunnyvision.com
123.242.231.188	A	mail.pearlbox.net
123.242.231.188	A	pearlbox.net
123.242.231.189	PTR	123-242-231-189.sunnyvision.com
123.242.231.190	PTR	123-242-231-190.sunnyvision.com
123.242.231.190	A	123-242-231-190.sunnyvisiondatacenter.com
123.242.231.216	PTR	123-242-231-216.as4646.net
123.242.231.217	PTR	123-242-231-217.as4646.net
123.242.231.223	PTR	123-242-231-223.sunnyvision.com
123.242.231.243	PTR	123-242-231-243.sunnyvision.com
123.242.231.249	PTR	123-242-231-249.as4646.net
123.242.231.255	PTR	123-242-231-255.sunnyvision.com