Robtex

Up: 123.4.0.0/15
Can't show all results, try to descend to a more specific CIDR
Down left: 123.5.0.0/17
Down right: 123.5.128.0/17

IP	Type	Hostname
123.5.0.0	PTR	hn.kd.ny.adsl
123.5.0.1	PTR	hn.kd.ny.adsl
123.5.0.2	PTR	hn.kd.ny.adsl
123.5.0.3	PTR	hn.kd.ny.adsl
123.5.1.2	PTR	hn.kd.ny.adsl
123.5.4.3	PTR	hn.kd.ny.adsl
123.5.6.2	PTR	hn.kd.ny.adsl
123.5.7.2	PTR	hn.kd.ny.adsl
123.5.12.2	PTR	hn.kd.ny.adsl
123.5.13.2	PTR	hn.kd.ny.adsl
123.5.18.2	PTR	hn.kd.ny.adsl
123.5.24.2	PTR	hn.kd.ny.adsl
123.5.25.2	PTR	hn.kd.ny.adsl
123.5.35.2	PTR	hn.kd.ny.adsl
123.5.56.49	A	sos2009com.3322.org
123.5.65.151	A	xxfz.ufyct.com
123.5.89.144	A	songjie.tk
123.5.123.89	A	lostinforever.tk
123.5.139.8	A	www.hanlitao.com
123.5.148.88	A	2517.tk
123.5.157.0	PTR	hn.kd.ny.adsl
123.5.161.3	PTR	hn.kd.ny.adsl
123.5.169.3	PTR	hn.kd.ny.adsl
123.5.177.0	PTR	hn.kd.ny.adsl
123.5.224.0	PTR	hn.kd.ny.adsl
123.5.224.2	PTR	hn.kd.ny.adsl
123.5.230.2	PTR	hn.kd.ny.adsl
123.5.236.3	PTR	hn.kd.ny.adsl
123.5.252.1	PTR	hn.kd.ny.adsl