RethinkDNS (DNS Provider)

They allow high configuration with unlimited requests, unlike NextDNS that in the free layer is limited to 300,000 queries.

What do you think?

rdns dev here

Both the server and the Android client are fully open source, too. We’re currently working on a low-cost DNS resolver (500million/reqs for $1 as opposed to $100 that it costs us today), as traffic has substantially ramped up in the recent months (around ~5k reqs/sec, right now).

(in fact, the deployments are “open” as well: ⛅ CF · Workflow runs · serverless-dns/serverless-dns · GitHub)