Re: The block message is 521 DNSRBL: Blocked for abuse

[John Curran <jcurran () arin net>]

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 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