Robtex

Up: 216.203.64.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 216.203.64.0/21
Down right: 216.203.72.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
216.203.72.4	A	smtp.uac.fl.gov
216.203.72.4	A	smtp1.flaawi.com
216.203.72.4	A	smtp1.floridajobs.org
216.203.72.23	PTR	connectsharepoint.flaawi.com
216.203.72.23	PTR	connectuag.flaawi.com
216.203.72.23	A+PTR	connectwebmail.flaawi.com