Robtex

Up: 192.40.140.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 192.40.140.0/25
Down right: 192.40.140.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
192.40.140.5	A+PTR	ns2.voipster.org
192.40.140.7	A+PTR	mx1.voipster.org
192.40.140.8	A+PTR	ns1.voipster.org
192.40.140.13	A	misx-network.net
192.40.140.13	A	502voip.com
192.40.140.13	A	ipcprotects.com
192.40.140.16	A+PTR	hs1.dreamfactoryinc.org
192.40.140.16	A	www.dreamfactoryinc.org
192.40.140.16	A	dreamfactoryincfla.org