208.67.222.222
Although they've been bought by Cisco recently.
You could also just run your own local caching resolver that hits the real root nameservers for lookup.
Doesn't sound like a full time job to me.
Remember when they said they don't combine data from different properties?
I would think they'd just dump the data from all of their services into your advertising profile. They won't store your name and such, but they have to have a way of linking this anonymous profile to your google account or something. I doubt that google simply deletes all advertising profile data if you just happen to clear your cookies.
Which means Google could cause ads to follow you around, for example. Again, I don't know what all they actually do or don't do with their DNS logs, but the quoted "promise" doesn't promise anonymity, just separation of you as a known Google user from you as a semi-anonymous but specific DNS user.
I'm reminded of the early days of the Snowden revelations, when the NSA was saying "it's just metadata."
> Yes. Freenom World's DNS resolvers can handle DNSSEC requests as any other resolver.