Robtex

Up: 128.250.184.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 128.250.188.0/23
Down right: 128.250.190.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
128.250.188.129	A+PTR	rtr-350000.unimelb.edu.au
128.250.191.73	A	mail.umdc.com.au
128.250.191.208	A+PTR	pds.psych.unimelb.edu.au
128.250.191.208	A+PTR	pscd.psych.unimelb.edu.au
128.250.191.208	PTR	tests-library.psych.unimelb.edu.au