Robtex

Up: 185.73.16.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 185.73.20.0/23
Down right: 185.73.22.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
185.73.20.132	PTR	due-20-132.serverhosting.uaruhr.de
185.73.20.132	A	kowi.uni-duisburg-essen.de
185.73.20.144	A+PTR	due-20-144.serverhosting.uaruhr.de
185.73.20.144	A	www.fachschaft-mathe.de
185.73.20.144	A	mx.fachschaft-mathe.de
185.73.20.157	A+PTR	due-20-157.serverhosting.uaruhr.de
185.73.20.157	A	ns3.uni-duisburg-essen.de
185.73.20.158	A+PTR	due-20-158.serverhosting.uaruhr.de
185.73.20.158	A	flrnmllr.com
185.73.20.162	A+PTR	due-20-162.serverhosting.uaruhr.de
185.73.20.162	A	nanoboard.iw.uni-due.de