@lxo @jz @smaurizi @benjamin I don't think so. I don't know where resolving happens exactly, but I can imagine it could be on the exit node. In any case there needs to be some registry that retains DNS entries that are being deleted from the general global DNS and I guess Tor is not running any separate DNS administration.
I would generally be in favor of having a more independently managed alternative DNS administration, because the current structure is affected by intense poisoning by entities with cash/political power. At some point it will not serve as an accurate look-up mechanism anymore if nothing is done about that.