Robtex

Up: 192.136.48.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 192.136.49.0/25
Down right: 192.136.49.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
192.136.49.33	A	proxy-dmz.inescporto.pt
192.136.49.34	A	beaker.inescporto.pt
192.136.49.34	A	beaker-eth1.inescn.pt
192.136.49.34	A	beaker.inescn.pt
192.136.49.35	A	forum-manufuturep.org
192.136.49.58	PTR	inescp-sw21-dmz.inescporto.pt
192.136.49.61	A	inescp-sw23-dmz.inescn.pt
192.136.49.62	A	inescp-gw-dmz.inescn.pt
192.136.49.128	A+PTR	eduroam-pool.inesctec.pt
192.136.49.130	A	eduroam-130.inesctec.pt
192.136.49.130	A	eduroam-130.inescporto.pt
192.136.49.134	A+PTR	eduroam-134.inesctec.pt
192.136.49.134	A	eduroam-134.inescporto.pt
192.136.49.140	A+PTR	eduroam-140.inesctec.pt
192.136.49.142	A+PTR	eduroam-142.inesctec.pt
192.136.49.158	A+PTR	eduroam-158.inesctec.pt
192.136.49.159	A+PTR	eduroam-159.inesctec.pt
192.136.49.162	A+PTR	eduroam-162.inesctec.pt
192.136.49.163	A+PTR	eduroam-163.inesctec.pt
192.136.49.170	A+PTR	eduroam-170.inesctec.pt
192.136.49.170	A	eduroam-170.inescporto.pt
192.136.49.173	A+PTR	eduroam-173.inesctec.pt
192.136.49.174	A+PTR	eduroam-174.inesctec.pt
192.136.49.178	A	eduroam-178.inescporto.pt
192.136.49.180	A+PTR	eduroam-180.inesctec.pt
192.136.49.182	A	eduroam-182.inescporto.pt
192.136.49.184	A+PTR	eduroam-184.inesctec.pt
192.136.49.185	A	eduroam-185.inescporto.pt
192.136.49.188	A+PTR	eduroam-188.inesctec.pt
192.136.49.252	A	inescp-gw.inescn.pt
192.136.49.253	PTR	inescp-sw0.inescn.pt