4.10 still allows dual stacking core services like DNS but it is intended for NAT64 type deployment for other things (which I'm a fan of anyways! I'd encourage anyone to look into it while waiting for a different assignment, it's really quite good)... that said they are never going to be able to tell if your usage is from NAT64 or raw clients, not that I would condone lying in your application.

Thanks, I'll poke around a few and see which looks best! A bit more than Vultr but well worth it for a full table.