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David, ARIN will provide the information you requested later today. Thanks <br>
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<blockquote type="cite">On Jan 4, 2023, at 7:12 PM, David Farmer via ARIN-PPML <arin-ppml@arin.net> wrote:<br>
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<div dir="ltr" class="gmail_attr">On Wed, Jan 4, 2023 at 4:32 PM William Herrin <<a href="mailto:bill@herrin.us">bill@herrin.us</a>> wrote:<br>
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On Wed, Jan 4, 2023 at 11:52 AM Fernando Frediani <<a href="mailto:fhfrediani@gmail.com" target="_blank">fhfrediani@gmail.com</a>> wrote:<br>
> 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.<br>
<br>
The standard size assignment to an end user is /48 per IETF<br>
recommendation. That's 65,000 LANs, 2^80 IP addresses. Vanishingly few<br>
end-user organizations actually have a need for more LANs than that.<br>
However, since /48 is also the minimum Internet routable size,<br>
end-user organizations with multiple independently-connected sites may<br>
need several /48s. That's a minority of end-users but still a<br>
significant number.<br>
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<div>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.<br>
<br>
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.<br>
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I hope that helps.<br>
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ISPs get a /32 so that, by default, they can assign 65,000 /48s to<br>
their customers and still keep a few for themselves. That's the reason<br>
they receive significantly more.<br>
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Regards,<br>
Bill Herrin<br>
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-- <br>
For hire. <a href="https://bill.herrin.us/resume/" rel="noreferrer" target="_blank">
https://bill.herrin.us/resume/</a><br>
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-- <br>
<div dir="ltr" class="gmail_signature">===============================================<br>
David Farmer <a href="mailto:Email%3Afarmer@umn.edu" target="_blank">
Email:farmer@umn.edu</a><br>
Networking & Telecommunication Services<br>
Office of Information Technology<br>
University of Minnesota <br>
2218 University Ave SE Phone: 612-626-0815<br>
Minneapolis, MN 55414-3029 Cell: 612-812-9952<br>
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