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Re: [apps-discuss] "finding registered domains"

Stephane Bortzmeyer <bortzmeyer@nic.fr> Fri, 15 March 2013 22:05 UTC

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Date: Fri, 15 Mar 2013 17:56:53 -0400
From: Stephane Bortzmeyer <bortzmeyer@nic.fr>
To: John Levine <johnl@taugh.com>
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Cc: apps-discuss@ietf.org
Subject: Re: [apps-discuss] "finding registered domains"
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On Wed, Mar 13, 2013 at 02:43:21PM -0000,
 John Levine <johnl@taugh.com> wrote 
 a message of 23 lines which said:

> I agree that use cases would help a lot.  The ones I'm aware of are:

Another one I had at $DAYJOB: we make statistics about the "most
frequently requested" domains on our authoritative name servers. Of
course, we want foo.bar.example.fr and machin.example.fr to be counted
both as "example.fr". Some DNS statistics program (like DSC) do it
blindly, just by the number of labels. But .fr delegates both at the
2nd and 3rd level (gouv.fr, asso.fr, tm.fr...). We had to use Mozilla
Public Suffix List (via the excellent
<http://www.dkim-reputation.org/regdom-libs/>) for that (for .fr, we
know the registration rules and could have hardwired them, but the
program had to work for other TLD).

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