[165914] in North American Network Operators' Group
Re: The block message is 521 DNSRBL: Blocked for abuse
daemon@ATHENA.MIT.EDU (John Curran)
Wed Sep 25 16:40:07 2013
From: John Curran <jcurran@arin.net>
To: nanog <nanog@nanog.org>
Date: Wed, 25 Sep 2013 20:39:48 +0000
In-Reply-To: <CAP-guGXaH+SO4LdWCznTkOxrVu_vHfaCYqfXY5do_5Sd2z-R3w@mail.gmail.com>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Sep 24, 2013, at 3:38 PM, William Herrin <bill@herrin.us> wrote:
> On Thu, Sep 19, 2013 at 6:34 PM, Frank Bulk <frnkblk@iname.com> wrote:
>> Is there an indication or separate list that shows if they've been recyc=
led?
>=20
> Hi Frank,
>=20
> Looks like they post a "remove" message when a block is returned to
> the registry and then an "add' when it's reassigned. For example,
> Derrick's block (74.112.96.0/22) was "removed" in November:
>=20
> http://lists.arin.net/pipermail/arin-issued/2012-November/001446.html
>=20
> and then "added" in March:
>=20
> http://lists.arin.net/pipermail/arin-issued/2013-March/001561.html
Basically correct; one small note is that the "Remove" message is
actually not when the block is returned to ARIN, but after the end
of the hold-down period (it may be several months later that a block
in the available pool is actually issued, depending on the already
existing inventory and rate of demand for any given block size.)
FYI,
/John
John Curran
President and CEO
ARIN
