Robtex

Up: 72.236.128.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 72.236.128.0/21
Down right: 72.236.136.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.236.129.5	PTR	www.leeclerk.org
72.236.129.100	PTR	mail.clcs-fl.com
72.236.131.47	A	cidervoyage.us
72.236.134.89	PTR	rai-na.com
72.236.137.75	PTR	ecof.com
72.236.138.66	PTR	mail.ibci.net
72.236.138.242	A+PTR	exchange.mcgregor.net
72.236.138.242	PTR	technology.mcgregor.net
72.236.140.34	PTR	mail.rai-na.com
72.236.140.35	PTR	mail.rai-na.com
72.236.140.42	PTR	sater.com
72.236.140.42	PTR	saterdesign.com
72.236.140.42	PTR	mail.sater.com
72.236.141.194	A	ns2.leepa.org
72.236.141.207	A	fieldcards.leepa.org
72.236.141.210	A	pol.leepa.org
72.236.141.211	A	gissvr.leepa.org
72.236.141.213	A+PTR	mail.leepa.org
72.236.141.215	A	leepa.org