> Unfortunately even the otherwise ever so useful https://caniuse.com/ does not provide that information
Not quite the same, but Cloudflare's statistics show that 8.1% of all DNS requests to its public resolver are for HTTPS RRs [0], and the statistics on the authoritative DNS server that I run [1] show that only 1.11% of requests were for an HTTPS RR.
A1: it’s naive to assume we’re at 100% https:// adoption? Any http:// URL will not trigger an HTTPS DNS lookup.
A2: site popularity and downstream caching of 1.1.1.1 means CloudFlare see fewer requests for HTTPS DNS than there are https:// connections?
That's Safari's market share among _browsers_, but lots of other stuff (IoT devices, mail servers, curl, etc.) can be configured to use 1.1.1.1.
> Safari is the only browser that does HTTPS DNS requests in its default configuration
I've opened [0] in both Firefox and Chromium on Linux, and it shows that ECH is enabled in both (which therefore means that HTTPS RRs are being queried). I don't think that I've changed any settings to enable this, but I was testing out ECH a few months ago, so I might have changed something then and forgotten.
> A1: it’s naive to assume we’re at 100% https:// adoption? Any http:// URL will not trigger an HTTPS DNS lookup
Cloudflare also has statistics on HTTP vs HTTPS [1], but that's going to be biased in favour of HTTPS since CF handles that automatically for sites they host.
> A2: site popularity and downstream caching of 1.1.1.1 means CloudFlare see fewer requests for HTTPS DNS than there are https:// connections?
Yup, but this also applies to A/AAAA records too, so this shouldn't make a difference to the ratio between different RR types.
[0]: https://tls-ech.dev/
[1]: https://radar.cloudflare.com/adoption-and-usage#http-vs-http...
Chrome provides graphs of HTTPS adoption, the overwhelming majority of browsing is via HTTPS now: https://transparencyreport.google.com/https/overview?hl=en_G...
I'd bet the reason that Linux usage is lower is developers running local servers
Chrome does too. At least going by the reports on our subreddit: https://archive.vn/9o6Jc / https://www.reddit.com/r/rethinkdns/comments/1ox7g21
> HTTPS DNS records can now be resolved with the operating system's DNS resolver on specific platforms (Windows 11, Linux, Android 10+). Previously this required DNS over HTTPS to be enabled.