> On Sep 30, 2021, at 12:19, Viktor Dukhovni <[email protected]> wrote:
>
> Of course the DS RRSet might also have been manually flushed from the
> cache, as special treatment for "slack.com <http://slack.com/>", given their
> popularity and
> the verifiable deletion of the DS records.
Both Google and Cloudflare have a publicly accessible feature to flush the
cache for a domain, so anyone could have done it:
https://developers.google.com/speed/public-dns/cache
https://1.1.1.1/purge-cache/
Ask
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