On Tue, Oct 14, 2025 at 1:13 PM Jan Schaumann <jschauma=
[email protected]> wrote:

> "D. J. Bernstein" <[email protected]> wrote:
> > > > As for SecP256r1MLKEM768 and SecP384r1MLKEM1024 in this draft, the
> > > > current status is that they're basically not supported in
> > > > deployments at all.
> > > acm.us-west-1.amazonaws.com (US),
> >   [ etc. ]
> >
> > I stand by what I said. The top-100000-sites survey from
> >
> >     https://www.netmeister.org/blog/pqc-use-2025-03.html
>
> There have been some changes since March.  My latest
> results from September show 6,159 sites supporting
> SecP256r1MLKEM768 (vs. 38,931 supporting
> X25519MLKEM768).
>
> https://www.netmeister.org/blog/pqc-use-2025-09.html
>
> But at this point, it looks to me like it's basically
> just AWS Cloudfront that supports SecP256r1MLKEM768
> (as reflected in the selection of services Panos
> posted).
>

Note that the vast majority of the sample set (and hence the X25519MLKEM768
support) is Cloudflare, so to some extent we're seeing the decision by
Amazon
to support P-256 and Cloudflare not to.

-Ekr


>
> -Jan
>
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