On Mar 25, 2013, at 5:16 PM, Milton L Mueller <mueller@syr.edu> wrote:

OK. Your point is clearer now. But my understanding is that ARIN has no authority over transfers from a truly "legacy" (i.e., non-contracted) holder. If such a legacy holder wants to transfer to RIPE region without ARIN needs assessment, they can if RIPE allows it. ARIN will fuss and bluster about it, but so what?

Milton - 
 
  Your understanding is incorrect.  ARIN operates the registry in accordance with 
  the policy developed by ARIN region, and resources in the registry are therefore 
  completely subject to those policies.  

  As I noted earlier, we'd prefer contracts where possible, but even a party that 
  does not have a formal contract can chose to participate or not.  You can use 
  any numbers you want in your routers, but if you wish to use numbers which 
  are unique per the Internet Registry system, then you are participating in the 
  Internet Registry system, gaining the benefits thereof, and therefore are subject 
  to the policies used in its coordination & operation.

  Feel free to read <https://www.arin.net/resources/legacy/>, question #18 and 
  related answer for  more background.

Thanks!
/John

John Curran
President and CEO
ARIN