Robtex

Up: 192.52.176.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 192.52.178.0/24
Down right: 192.52.179.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
192.52.178.1	A	gw.k.nstld.com
192.52.178.9	A+PTR	vrrp.k.nstld.com
192.52.178.10	A+PTR	igw1.k.nstld.com
192.52.178.11	A	igw2.k.nstld.com
192.52.178.30	A+PTR	k.gtld-servers.net
192.52.178.30	A	k.gtld-servers.com
192.52.178.30	A	sinclairandco.com
192.52.178.31	PTR	k2.nstld.com
192.52.178.32	A+PTR	k3.nstld.com
192.52.178.33	PTR	k4.nstld.com
192.52.178.34	A+PTR	k5.nstld.com
192.52.178.35	PTR	k6.nstld.com
192.52.178.36	A+PTR	k7.nstld.com
192.52.178.37	A+PTR	k8.nstld.com
192.52.178.38	A+PTR	k9.nstld.com
192.52.178.39	A+PTR	k10.nstld.com
192.52.179.2	A+PTR	dc-sbc2.internet2.edu
192.52.179.9	A+PTR	dc-router.internet2.edu
192.52.179.36	A	dlu-poly.internet2.edu
192.52.179.41	A	sxiao-poly.internet2.edu
192.52.179.69	A+PTR	farragut-mini.internet2.edu
192.52.179.70	A+PTR	franklin-mini.internet2.edu
192.52.179.76	A+PTR	dc76.internet2.edu
192.52.179.100	A	dc100.internet2.edu
192.52.179.204	A+PTR	swolff-poly.internet2.edu
192.52.179.216	A	mcpherson-poly.internet2.edu
192.52.179.219	A+PTR	9th-guest-2-poly.internet2.edu
192.52.179.225	A	dc-srv-rtr.internet2.edu
192.52.179.232	A	ns2.internet2.edu
192.52.179.234	A+PTR	teleworker-gateway.internet2.edu
192.52.179.236	A+PTR	webprod2-icds2.internet2.edu
192.52.179.237	A	webprod2-services.internet2.edu
192.52.179.238	A	dial-dc1.internet2.edu
192.52.179.238	A	dial-dc.internet2.edu
192.52.179.239	A	sbc-primary.dc.internet2.edu
192.52.179.240	A+PTR	webprod2-jabber.internet2.edu
192.52.179.242	A+PTR	ntp.internet2.edu
192.52.179.247	A+PTR	temptrax-dc.internet2.edu
192.52.179.249	A+PTR	webprod2-service1.internet2.edu
192.52.179.250	A+PTR	dns2.internet2.edu