Robtex

Up: 204.99.128.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 204.99.129.0/25
Down right: 204.99.129.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
204.99.129.0	A+PTR	nw.lump.net
204.99.129.2	A+PTR	sushi.lewin.org
204.99.129.2	A	lewin.org
204.99.129.3	A+PTR	icebolt.lump.net
204.99.129.3	A	tom.lump.net
204.99.129.5	PTR	ref.lump.net
204.99.129.5	A	xeen.me
204.99.129.5	A	lech.xeen.me
204.99.129.11	A	logicianslament.com
204.99.129.22	A	coopsncrafts.com
204.99.129.34	A+PTR	manuel.dublan.net
204.99.129.34	A	ns1.dublan.net
204.99.129.37	PTR	geronimo.dublan.net
204.99.129.37	A	dublan.net
204.99.129.37	A	theultimatehang.com
204.99.129.39	A+PTR	tao.lump.net
204.99.129.41	A+PTR	mail.dublan.net
204.99.129.226	A+PTR	qbert.lump.net
204.99.129.226	A	scratchy.lump.net
204.99.129.226	A	lump.net
204.99.129.255	PTR	bc.lan.lump.net