Robtex

Up: 203.19.80.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 203.19.80.0/25
Down right: 203.19.80.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.19.80.61	PTR	80.61-nd.edu.au
203.19.80.124	PTR	80.124-nd.edu.au
203.19.80.173	PTR	80.173-nd.edu.au
203.19.80.197	PTR	www.nd.edu.au
203.19.80.197	A	student.nd.edu.au
203.19.80.203	PTR	erc.nd.edu.au
203.19.80.204	PTR	uniauth.nd.edu.au
203.19.80.204	A	tmg.nd.edu.au
203.19.80.208	PTR	www1.nd.edu.au
203.19.80.208	A	broome.nd.edu.au
203.19.80.210	PTR	webone.nd.edu.au
203.19.80.210	A	sonia.nd.edu.au
203.19.80.210	A	my.nd.edu.au
203.19.80.212	A	tmg02.nd.edu.au
203.19.80.217	A+PTR	frmpexc04.nd.edu.au
203.19.80.217	A	frmpexc03.nd.edu.au
203.19.80.252	PTR	80.252-nd.edu.au
203.19.80.252	A	blackboard.nd.edu.au