Robtex

Up: 208.89.240.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 208.89.240.0/23
Down right: 208.89.242.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
208.89.240.3	PTR	doa.as1.nyc.us.sharedband.net
208.89.240.3	A	ns2.enman.fr
208.89.240.3	A	ns2.enman-it-schools.com
208.89.240.5	A	email.swanngalleries.com
208.89.240.5	A	mail.swanngalleries.com
208.89.240.7	PTR	smtp7.sharedband.lamicro.net
208.89.240.7	A	ns4.lamicro.com
208.89.240.7	A	ns4.lamicro.ca
208.89.240.10	A	ns3.lamicro.org
208.89.240.14	PTR	host-14-240-89-208.as1.nyc.us.sharedband.net
208.89.240.14	A	mikeschrag.com
208.89.240.45	PTR	host-45-240-89-208.as1.nyc.us.sharedband.net
208.89.241.2	A	ag1.sea.us.sharedband.net
208.89.241.9	PTR	host-9-241-89-208.as1.sea.us.sharedband.net
208.89.241.9	A	sacdata.com
208.89.241.38	PTR	host-38-241-89-208.as1.sea.us.sharedband.net
208.89.241.38	A	saveitshareit.com
208.89.241.49	PTR	host-49-241-89-208.as1.sea.us.sharedband.net
208.89.241.98	PTR	mail.silasg.com
208.89.241.98	A	mail.suitesgf.net
208.89.241.102	A	suitesgf.com
208.89.241.102	A	suitesgf.net
208.89.241.114	PTR	mail.genelex.com
208.89.242.7	PTR	host-7-242-89-208.as1.lax.us.sharedband.net
208.89.242.10	A	jsnpc-sbs.jsnpc.com
208.89.242.16	PTR	host-16-242-89-208.as1.lax.us.sharedband.net
208.89.242.242	A	remote.kmesupport.com
208.89.243.36	A+PTR	mail.gzanders.com
208.89.243.36	A	mail.gzanders.net
208.89.243.38	PTR	mail.gzanders.com
208.89.243.89	PTR	mail.bellsbeer.com
208.89.243.125	PTR	host-125-243-89-208.as1.chi.us.sharedband.net
208.89.243.125	A	host-125-243-89-208.ag1.chi.us.sharedband.net
208.89.243.148	PTR	green.netuxsolutions.net
208.89.243.148	A	lancasterems.org
208.89.243.148	A	donat.org
208.89.243.152	A	nx.securehalo.net
208.89.243.153	A+PTR	ns1.netuxsolutions.net
208.89.243.155	A	somersettelephonedirectory.com
208.89.243.155	A	upperstcroixdirectory.com