Robtex

Up: 192.255.0.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 192.255.0.0/20
Down right: 192.255.16.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
192.255.0.0	A+PTR	0.00.ffc0.ip4.static.sl-reverse.com
192.255.0.0	A	192.255.0.0-static.reverse.softlayer.com
192.255.0.8	A+PTR	8.00.ffc0.ip4.static.sl-reverse.com
192.255.0.82	A+PTR	52.00.ffc0.ip4.static.sl-reverse.com
192.255.0.82	A	boem.gov
192.255.0.82	A	www.iacb.doi.gov
192.255.0.170	A+PTR	aa.00.ffc0.ip4.static.sl-reverse.com
192.255.0.170	A	www.isportsman.net
192.255.1.0	A	0.01.ffc0.ip4.static.sl-reverse.com
192.255.1.1	PTR	192.255.1.1-static.reverse.softlayer.com
192.255.1.75	A	mynavyexchange.com
192.255.2.0	A	0.02.ffc0.ip4.static.sl-reverse.com
192.255.2.198	A+PTR	c6.02.ffc0.ip4.static.sl-reverse.com
192.255.2.198	A	charterschoolprogramonline.com
192.255.3.0	A	0.03.ffc0.ip4.static.sl-reverse.com
192.255.4.0	A	0.04.ffc0.ip4.static.sl-reverse.com
192.255.5.0	A	0.05.ffc0.ip4.static.sl-reverse.com
192.255.5.41	A+PTR	29.05.ffc0.ip4.static.sl-reverse.com
192.255.5.41	A	volunteernow.com
192.255.6.0	A	0.06.ffc0.ip4.static.sl-reverse.com
192.255.7.0	A	0.07.ffc0.ip4.static.sl-reverse.com
192.255.8.0	A	0.08.ffc0.ip4.static.sl-reverse.com
192.255.9.0	A	0.09.ffc0.ip4.static.sl-reverse.com
192.255.9.183	PTR	192.255.9.183-static.reverse.softlayer.com
192.255.10.95	A+PTR	5f.0a.ffc0.ip4.static.sl-reverse.com
192.255.10.95	A	192.255.10.95-static.reverse.softlayer.com
192.255.11.0	A+PTR	0.0b.ffc0.ip4.static.sl-reverse.com
192.255.12.0	A	0.0c.ffc0.ip4.static.sl-reverse.com
192.255.12.67	A	m1ss.maximo.com
192.255.13.0	A	0.0d.ffc0.ip4.static.sl-reverse.com
192.255.14.0	A	0.0e.ffc0.ip4.static.sl-reverse.com
192.255.15.0	A	0.0f.ffc0.ip4.static.sl-reverse.com
192.255.16.0	A	0.10.ffc0.ip4.static.sl-reverse.com
192.255.17.0	A	0.11.ffc0.ip4.static.sl-reverse.com
192.255.18.0	A	0.12.ffc0.ip4.static.sl-reverse.com
192.255.18.112	PTR	70.12.ffc0.ip4.static.sl-reverse.com
192.255.18.112	A	192.255.18.112-static.reverse.softlayer.com
192.255.19.0	A	0.13.ffc0.ip4.static.sl-reverse.com
192.255.20.0	A	0.14.ffc0.ip4.static.sl-reverse.com
192.255.21.0	PTR	192.255.21.0-static.reverse.softlayer.com
192.255.21.0	A	0.15.ffc0.ip4.static.sl-reverse.com
192.255.22.0	A	0.16.ffc0.ip4.static.sl-reverse.com
192.255.23.0	A	0.17.ffc0.ip4.static.sl-reverse.com
192.255.24.0	A	0.18.ffc0.ip4.static.sl-reverse.com
192.255.25.0	A+PTR	0.19.ffc0.ip4.static.sl-reverse.com
192.255.25.75	A+PTR	4b.19.ffc0.ip4.static.sl-reverse.com
192.255.25.75	A	mail.jpl-blackboard.com
192.255.25.75	A	jpl-blackboard.com
192.255.26.0	A	0.1a.ffc0.ip4.static.sl-reverse.com
192.255.27.0	A	0.1b.ffc0.ip4.static.sl-reverse.com
192.255.28.0	A	0.1c.ffc0.ip4.static.sl-reverse.com
192.255.29.0	A	0.1d.ffc0.ip4.static.sl-reverse.com
192.255.30.0	A	0.1e.ffc0.ip4.static.sl-reverse.com
192.255.31.0	A	0.1f.ffc0.ip4.static.sl-reverse.com