Google closed its acquisition of On2 this year. On2 was known as The Duck Corporation as early as 1995. That's why duck.com belonged on On2--duck.com was regis

Google closed its acquisition of On2 this year. On2 was known as The Duck Corporation as early as 1995. That's why duck.com belonged on On2--duck.com was registered more than a decade before duckduckgo.com, and I have to admit when I see duck.com, I still think primarily of the Duck codec. It looks like duck.com changed nameservers from ns1.on2.com to ns1.google.com about a month ago; my guess is that duck.com started pointing to Google as part of the switchover of nameservers from On2 to Google. I don't know what Google's policy on selling domains is. I don't remember Google ever sell any domains offhand, but I dropped an email to one of our domain people to ask about that.