On Thu, 22 Sep 2016 15:59:38 +0100
Gervase Markham <g...@mozilla.org> wrote:

> Hi everyone,
> Sorry if this is a bit lazy of me, but does anyone have either or
> both of:
> * A command-line one-liner; or
> * A web page tool
> for checking the CAA record of a domain? I'm sure I used to have a
> one-liner which even decoded the encoding, but I can't find it now.
> And lots of the online DNS tools don't seem to understand CAA.

If you have a new enough version of BIND, you can just use host or dig
like any other record type:

        host -t CAA google.com
        dig google.com CAA

If that doesn't work, dns.google.com supports CAA:


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