Robtex

Up: 204.57.0.0/17
Can't show all results, try to descend to a more specific CIDR
Down left: 204.57.0.0/19
Down right: 204.57.32.0/19
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
204.57.0.1	A+PTR	catarina.usc.edu
204.57.0.1	A	netweb.usc.edu
204.57.0.1	A	netlab.usc.edu
204.57.0.2	A	rumi.usc.edu
204.57.0.66	A	blueridge.usc.edu
204.57.0.68	A	longwood.usc.edu
204.57.0.80	A+PTR	richmond.usc.edu
204.57.0.82	A+PTR	carolina.usc.edu
204.57.0.129	A+PTR	sim19.usc.edu
204.57.0.150	A	sim.usc.edu
204.57.0.151	A	sim1.usc.edu
204.57.0.152	A	sim2.usc.edu
204.57.0.246	A	visa-gw7.usc.edu
204.57.0.247	A+PTR	visa-gw6.usc.edu
204.57.0.248	A	visa-gw5.usc.edu
204.57.0.249	A+PTR	visa-gw4.usc.edu
204.57.0.254	A	netlab-gw.usc.edu
204.57.1.4	A	excalibur.usc.edu
204.57.2.2	A+PTR	peering-ns.usc.edu
204.57.2.3	A	peering.usc.edu
204.57.2.13	A+PTR	peering-ns2.usc.edu
204.57.3.1	A	fbsd1.usc.edu
204.57.3.2	A	fbsd2.usc.edu
204.57.3.3	A+PTR	fbsd3.usc.edu
204.57.3.4	A+PTR	fbsd4.usc.edu
204.57.3.225	A	netlab5-gw.usc.edu
204.57.3.234	A+PTR	netlab-gw.usc.edu
204.57.9.23	A+PTR	extns2.rcc.org
204.57.9.40	A+PTR	m.psim.cincinnati-oh.gov
204.57.9.41	PTR	psim.cincinnati-oh.gov
204.57.13.11	A	city-egov.cincinnati-oh.gov
204.57.13.12	PTR	www.cincinnati-oh.gov
204.57.13.12	A	www.rcc.org
204.57.13.12	A	clear-rcic.org
204.57.37.10	A	bjsembroideredapparel.com
204.57.46.10	A+PTR	tesears.com
204.57.46.10	PTR	www.birminc.com
204.57.46.10	PTR	www.tesears.com
204.57.46.20	A	mail.birminc.com
204.57.46.100	PTR	nt.pixeldance.com
204.57.51.10	A	htwrealty.com
204.57.51.10	A	htwgroup.com
204.57.51.10	A	*.resourcepower.net
204.57.51.119	A	mail.irp.com
204.57.51.119	A	mail.teamavs.net
204.57.61.67	A	mbserv2.millbern.boston.ma.us
204.57.62.68	PTR	speedy.toon.org