Robtex

Up: 192.42.92.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 192.42.92.0/25
Down right: 192.42.92.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
192.42.92.9	PTR	cs-lewis.acld.lib.fl.us
192.42.92.28	PTR	nat.acld.lib.fl.us
192.42.92.96	A+PTR	mailout.aclib.us
192.42.92.96	A+PTR	mailout.acld.lib.fl.us
192.42.92.97	A+PTR	mail.aclib.us
192.42.92.97	A+PTR	exchange.acld.lib.fl.us
192.42.92.97	A+PTR	mail.acld.lib.fl.us
192.42.92.101	A+PTR	ill.acld.lib.fl.us