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Hiding "www" subdomain looks like an ugly workaround for missing support for DNS SRV records in HTTP/browsers.

• tialaramex 7y ago
  Good news on that front. To do a bunch of new things browser vendors want, they need to put more stuff into DNS. For example eSNI needs keys in DNS, and HTTP/3 (HTTP over QUIC, which is the new encrypted transport protocol) wants a way to discover HTTP/3 availability before connecting with TLS. So at IETF 105 last week there was stuff pinging around about the idea of a single new record, perhaps just for HTTP or perhaps more, that wraps all this stuff up, with all the SRV features too. The DPRIVE work is having the effect of reducing the pressure to not use DNS, because crappy DNS servers break all the time when you add new things, but DPRIVE servers are operated by people who actually know what they're doing so that isn't a risk, and eSNI in particular makes no sense without DPRIVE, so why not.