Technically any Universal Web server can run on any port and won’t be an issue for the client. Due to the client getting the certificate from the DIS which specifies port. A client could request a hostname and the DIS would respond with a default certificate for that specific hostname. Meaning a port isn’t a required property for the request object sent to the DIS.
The Domain Information Service is designed to be smart, lean, flexible, and robust. There is so much power in DNS as a service that would fix a plethora of issues on the web. When the decentralized aspects come in. Services can do a Viat PoW on the behalf of the DIS. The services could also simply do a single PoW and then make an instant payment to the DIS with Viat. This speeds up its request to say modify its hostname records on the DIS.
No PoW is done without having a direct economic impact on the network. Which is radically different than many other decentralized blockchain cryptocurrencies & networks. There is no reason to waste computational time and power. There is no need to be guessing.
Full Twitter thread – https://twitter.com/tommarchi/status/1178312625509322752