Official git repo for iodine dns tunnel
A regular proxy on port 53 might work? Is it necessary to actually use DNS?
Otherwise there's https://github.com/yarrick/iodine
Route53 as a database, with DynamoDB-compatible API
Actually I turned DNS into a database ;)
Collect and Analyze Billions of Data Points in Real Time. Manage all types of time series data in a single, purpose-built database. Run at any scale in any environment in the cloud, on-premises, or at the edge.
A DNS server that offers useful utilities and services over the DNS protocol. Weather, world time, unit conversion etc.
It's always amusing to see DNS "hackery" like this, and always makes me go back to DNS Toys (https://www.dns.toys/), which generated a huge discussion on HN a year ago 
 well, it's not really hackery if you're being pedantic, since it's doing what the spec allows it to do
 DNS Toys (946 points): https://news.ycombinator.com/item?id=31704789
Fun with DNS TXT Records
3 projects | news.ycombinator.com | 26 Nov 2023
7 projects | news.ycombinator.com | 11 Jun 2022
Show HN: File distribution over DNS: (ab)using DNS as a CDN
2 projects | news.ycombinator.com | 31 Jul 2023
Anything can be a message queue if you use it wrongly enough
4 projects | /r/programming | 4 Jun 2023
help with choosing a VPN to host (I'll explain)
2 projects | /r/selfhosted | 23 May 2023