[arin-ppml] Are we an ISP or an End-User? Can our designation change at a later time?

[Jon Worley]

Hello David,

Here’s the information you requested.

Block Size            # Blocks                % of Total
/20                                   8                   0.09%
/22                                22                    0.25%
/24                                34                    0.39%
/27                                  2                     0.02%
/28                            113                     1.30%
/29                               14                     0.16%
/30                                 6                      0.07%
/31                               23                      0.26%
/32                         3,986                     45.69%
/33                                 1                       0.01%
/35                                 3                       0.03%
/36                         1,169                     13.40%
/37                                 1                       0.01%
/38                                 1                       0.01%
/40                             729                      8.36%
/41                               11                      0.13%
/42                               13                      0.15%
/43                                 9                       0.10%
/44                             805                      9.23%
/45                               15                      0.17%
/46                               14                      0.16%
/47                               26                      0.30%
/48                         1,719                     19.70%

Total Blocks        8,724

Jon Worley
Senior Technology Architect
American Registry for Internet Numbers (ARIN)



From: ARIN-PPML <arin-ppml-bounces at arin.net> on behalf of John Sweeting <jsweeting at arin.net>
Date: Thursday, January 5, 2023 at 11:05 AM
To: David Farmer <farmer at umn.edu>
Cc: "arin-ppml at arin.net" <arin-ppml at arin.net>
Subject: Re: [arin-ppml] Are we an ISP or an End-User? Can our designation change at a later time?

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 at arin.net> wrote:


On Wed, Jan 4, 2023 at 4:32 PM William Herrin <bill at herrin.us<mailto:bill at herrin.us>> wrote:
On Wed, Jan 4, 2023 at 11:52 AM Fernando Frediani <fhfrediani at gmail.com<mailto:fhfrediani at 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:farmer at umn.edu<mailto:Email%3Afarmer at umn.edu>
Networking & Telecommunication Services
Office of Information Technology
University of Minnesota
2218 University Ave SE        Phone: 612-626-0815
Minneapolis, MN 55414-3029   Cell: 612-812-9952
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