We are built on top of https://www.iroh.computer/blog/iroh-dns, and iroh uses the public key as the node identifier. Unfortunately the iroh id is 64 char long, which can not be used in subdomains, subdomains have a char limit of 63, so we are using dnssec base32[1], which comes to 52 chars, and we use that 52 char string as the primary identifier (instead of IP:port, which is used the "old school net" (tongue firmly in cheek), and we call it id52.
https://datatracker.ietf.org/doc/rfc5155/