ARIN legacy block transfer process

Matthew Kaufman matthew at
Fri Sep 30 19:15:29 UTC 2016

But only the recipient must put them under an RSA in order to have them
registered. The source need not have an RSA or LRSA for their legacy
blocks, at least as I understand it.

I'd also suggest that having a broker is useful, because the few well-known
ones that exist are well-versed in the process by now, for all types of
sources and destinations.

Matthew Kaufman

On Fri, Sep 30, 2016 at 12:08 PM William Herrin <bill at> wrote:

> On Fri, Sep 30, 2016 at 1:34 PM, Bryan Fields <Bryan at>
> wrote:
> > On 9/30/16 1:22 PM, William Herrin wrote:
> >> Note that you can't sell the block as an "owned asset" and have ARIN
> >> recognize the change. ARIN does not recognize ownership of IP address
> >> blocks, they only recognize registration and authorized agents.
> >
> > This would seem to be in violation of what the NSF has said about this
> space.
> > I thought ARIN was slapped hard once before about this very thing?
> To the best of my knowledge, that's not the case. Every relevant court
> case has ended one of two ways:
> 1. The addresses were revoked after the POC was (correctly) determined
> not currently represent the (defunct) registrant.
> 2. The registrant consented to place the addresses under an ARIN RSA
> without a judicial ruling. (e.g. Microsoft/Nortel)
> Regards,
> Bill Herrin
> --
> William Herrin ................ herrin at  bill at
> Owner, Dirtside Systems ......... Web: <>

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