David, ARIN will provide the information you requested later today. Thanks

Sent from my iPhone

On Jan 4, 2023, at 7:12 PM, David Farmer via ARIN-PPML <arin-ppml@arin.net> 
wrote:




On Wed, Jan 4, 2023 at 4:32 PM William Herrin 
<b...@herrin.us<mailto:b...@herrin.us>> wrote:
On Wed, Jan 4, 2023 at 11:52 AM Fernando Frediani 
<fhfredi...@gmail.com<mailto:fhfredi...@gmail.com>> wrote:
> Another thing that I wanted to understand better is the reasoning to allocate 
> a significant smaller IPv6 block to a said end-user organization given it is 
> not so scarce resource.

The standard size assignment to an end user is /48 per IETF
recommendation. That's 65,000 LANs, 2^80 IP addresses. Vanishingly few
end-user organizations actually have a need for more LANs than that.
However, since /48 is also the minimum Internet routable size,
end-user organizations with multiple independently-connected sites may
need several /48s. That's a minority of end-users but still a
significant number.

This is all true; However, justifying a larger end-user allocation (formerly 
known as an assignment) isn’t that hard either; you justify a /48 per site in a 
larger multi-site organization; they don’t have to be independently connected. 
That is, more than 1 site but less than or equal to 12 sites receive a /44 
allocation; more than 12 but less than or equal to 192 sites receive a /40 
allocation; see the policy for even larger allocations and a discussion for 
campus environments. Also, most larger organizations likely could qualify as an 
ISP/LIR if they wish.

So, many end-user organizations are receiving /44s, /40s, and even larger 
allocations without much trouble. Could the ARIN staff provide an updated 
histogram of IPv6 allocation sizes; I haven't seen one in several years.

I hope that helps.

ISPs get a /32 so that, by default, they can assign 65,000 /48s to
their customers and still keep a few for themselves. That's the reason
they receive significantly more.

Regards,
Bill Herrin

--
For hire. https://bill.herrin.us/resume/
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--
===============================================
David Farmer               Email:far...@umn.edu<mailto:email%3afar...@umn.edu>
Networking & Telecommunication Services
Office of Information Technology
University of Minnesota
2218 University Ave SE        Phone: 612-626-0815
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