Robtex

Up: 192.26.80.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 192.26.84.0/23
Down right: 192.26.86.0/23

IP	Type	Hostname
192.26.86.1	A+PTR	750nlsd-1-vln-849.northwestern.edu
192.26.86.17	PTR	valencia.abfn.local
192.26.86.130	PTR	villareal.abfn.local
192.26.86.130	PTR	192.26.86.130.nufp.northwestern.edu
192.26.86.166	PTR	dhcp-192-26-86-166.nufp.northwestern.edu
192.26.87.60	A+PTR	sl-perfsonar.starlight.northwestern.edu
192.26.87.65	A+PTR	abbt-mdf-5-ge-5-1-0-124.northwestern.edu
192.26.87.80	A+PTR	static-192-26-87-80.starlight.northwestern.edu
192.26.87.83	A+PTR	static-192-26-87-83.starlight.northwestern.edu
192.26.87.189	A+PTR	abbt-mdf-5-ge-5-1-0-122.northwestern.edu
192.26.87.233	A+PTR	abbt-mdf-5-ge-5-1-0-113.northwestern.edu
192.26.87.246	A+PTR	admin.z1.chi.dnsnode.net
192.26.87.255	A+PTR	abbt-mdf-5-ge-5-1-0-10.northwestern.edu