On 9/18/13 4:46 PM, Andrew D Kirch wrote:

On 9/18/2013 6:41 PM, Timothy Metzinger wrote:

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Here's a thought. Would it be possible to set up a process where ARIN, as part of reselling IP addresses, either issues a certificate of transfer that the new owner can use to prove to the ISPs that he's a new owner and not the old evil spammer, or ARIN publishes a list of IP assignments that can be used by ISPs to provisionally remove them from blocked lists?

I sympathize with the original poster, it's sort of like buying a used car, only to find out the previous owner was the drunk driver who ran over your next door neighbor's dog.

I used to run the AHBL and ARIN used to contact us when they recycled IP space. We always removed when contacted by ARIN.

Andrew

ARIN hasnt contacted us for this since i've been involved with the ahbl for ~5 years. just a FYI.

Is there an indication or separate list that shows if they've been recycled? Frank -----Original Message----- From: James Cloos [mailto:cloos@jhcloos.com] Sent: Thursday, September 19, 2013 2:26 PM To: nanog Cc: Timothy Metzinger Subject: Re: The block message is 521 DNSRBL: Blocked for abuse

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"TM" == Timothy Metzinger <tmetzinger@verizon.net> writes:

TM> or ARIN publishes a list of IP assignments that can be TM> used by ISPs to provisionally remove them from blocked lists? Arin publishes all new assignments to <arin-issued@arin.net>: List-Help: <mailto:arin-issued-request@arin.net?subject=help> List-Subscribe: <http://lists.arin.net/mailman/listinfo/arin-issued>, <mailto:arin-issued-request@arin.net?subject=subscribe> -JimC -- James Cloos <cloos@jhcloos.com> OpenPGP: 1024D/ED7DAEA6

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:

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Is there an indication or separate list that shows if they've been recycled?

Hi Frank,

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:

http://lists.arin.net/pipermail/arin-issued/2012-November/001446.html

and then "added" in March:

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