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On May 19, 2016, at 6:17 PM, Mike Burns <<a href="mailto:mike@iptrading.com" class="">mike@iptrading.com</a>> wrote:<br class="">
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<div class=""><span style="color: rgb(31, 73, 125); font-family: Calibri, sans-serif; font-size: 15px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; display: inline !important; float: none;" class="">Geoff
Huston did some stats showing that dusty old blocks make up a large chunk of transferred space. Some of his data was presented at the recent LACNIC meeting.
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This is correct with respect to transferred address space from the ARIN region.</div>
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<div class=""><span style="color: rgb(31, 73, 125); font-family: Calibri, sans-serif; font-size: 15px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; display: inline !important; float: none;" class="">This
is evidence that the transfer market is actually more efficient at conserving address space than the needs-test regime ever was. Because needs-tests and utilization requirements and revocation threats did not bring these addresses into productive use, but
the market did.</span></div>
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<div>It is uncertain if that conclusion can be drawn from Geoff’s data, as it did not include</div>
<div>any direct measure or comparison of relative “conservation” for transfers in the ARIN</div>
<div>region vis-a-vis allocations/assignments in the ARIN region...</div>
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<div>I would not be surprised if your hypothesis is correct (as the ability to bring address</div>
<div>space back into productive use was recognized as a benefit during introduction of ARIN’s </div>
<div>specified transfer policy), but at best any validation based on actual data can only be applied</div>
<div>to the actual circumstances - it would be “The needs-based transfer market is actually </div>
<div>more efficient at conserving address space than the needs-based free-pool assignment</div>
<div>based model ever was”, i.e. it can’t provide any validation of a transfer market absent </div>
<div>needs-based testing, since there’s operating data in the ARIN region such a policy. </div>
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<div>/John</div>
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<div>John Curran</div>
<div>President and CEO</div>
<div>ARIN</div>
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