Robtex

Up: 216.208.68.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 216.208.68.0/25
Down right: 216.208.68.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
216.208.68.2	PTR	ns1.abssys.com
216.208.68.10	A+PTR	dallas.abssys.com
216.208.68.11	A+PTR	calgary.abssys.com
216.208.68.13	A	truemediasummit.org
216.208.68.13	A	brazilianinnovationexchange.com
216.208.68.13	A	pubicinvestorday.com
216.208.68.40	PTR	boston.abssys.com
216.208.68.40	PTR	ns4.abssys.com
216.208.68.40	A	deaubie.com
216.208.68.82	PTR	zpm.zentil.com
216.208.68.86	A	mail1.thestrategiccounsel.com
216.208.68.115	A	mx1.dsel.ca
216.208.68.115	A	email.dsel.ca
216.208.68.155	PTR	ca.g4s.com
216.208.68.162	A	mail.kingswaygroup.ca
216.208.68.171	A	mail.fpcflexible.com