[165871] in North American Network Operators' Group
Re: The block message is 521 DNSRBL: Blocked for abuse
daemon@ATHENA.MIT.EDU (John Curran)
Tue Sep 24 07:58:39 2013
From: John Curran <jcurran@arin.net>
To: Mark Andrews <marka@isc.org>
Date: Tue, 24 Sep 2013 11:58:22 +0000
In-Reply-To: <20130919024604.69F776FB858@rock.dv.isc.org>
Cc: John Levine <johnl@iecc.com>, "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Sep 18, 2013, at 10:46 PM, Mark Andrews <marka@isc.org> wrote:
> Which is irrelevent to removing a address block on the basis of a
> RIR recording that the block has been reallocated. A reallocation
> already goes through a quarantine period though that may get shorter
> as time goes on.
>=20
> A transfer on the other hand doesn't.
Correct. A transfer is not an issuance of space, and could very easily=20
be to a recipient related to the original party that caused the current=20
reputation.=20
Whereas the issuance of address space to a qualified requestor (even if=20
previously issued and now returned to ARIN) is far more likely to an=20
unrelated new party than anyone related to the original block holder. =20
> There may be some use in recording whether a address block is
> transfered or allocated. Note I'm not sure if the allocation
> date gets updated on a transfer or not.
The arin-issued feed is simply issued resources (not transfers) -=20
<https://www.arin.net/participate/mailing_lists/arin_issued.html>
It is highly recommended that folks running reputation systems monitor
this feed and avoid penalizing parties being issued resources, as those
requesting have no control over the prior history of these blocks before
their return to ARIN.
We are going to see quite a bit more of reissued blocks as we get down
towards the bottom of the available pool in this region (i.e. over the
next 6 to 12 months)
Thanks!
/John
John Curran
President and CEO
ARIN
