Robtex

Up: 204.50.156.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 204.50.157.0/25
Down right: 204.50.157.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
204.50.157.40	A	dns3.metropolitan.com
204.50.157.40	A	ns3.metropolitan.com
204.50.157.66	A+PTR	mail.ganz.com
204.50.157.68	A+PTR	ns1.ganz.com
204.50.157.70	PTR	mail.webkinz.com
204.50.157.71	PTR	mail.ganz.com
204.50.157.71	A	ganzrealty.com
204.50.157.72	PTR	mail.ganzwm.com
204.50.157.72	A	ganzwm.com
204.50.157.72	A	www.ganzwm.com
204.50.157.74	A	timeandagainexpressions.com
204.50.157.74	A	luxuryliteledcandles.com
204.50.157.74	A	eeksthemonkeybyganz.com
204.50.157.75	A+PTR	mail.ganz.com
204.50.157.75	A	mail.gforfun.com
204.50.157.75	A	mail.ganzwm.com
204.50.157.78	PTR	mail.ganz.com
204.50.157.78	A	spamcontroller.mwcbk.com
204.50.157.78	A	spamcontroller.ganz.com
204.50.157.144	A+PTR	mailnv.nucomm.net
204.50.157.161	PTR	mail.sys-x.com
204.50.157.165	PTR	e-mail.sys-x.com