<html><head></head><body bgcolor="#FFFFFF"><div><br></div><div><br></div><div></div><blockquote type="cite"><div><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div lang="EN-AU" link="blue" vlink="purple"><div><p class="MsoNormal" style="margin-right:0cm;margin-bottom:6.0pt;margin-left:0cm;line-height:14.4pt;background:white">
<span style="font-size:10.0pt;font-family:"Arial","sans-serif"">IPv6 addresses are assigned to organizations in much larger blocks as compared to IPv4 address assignments—the recommended allocation is a</span><span style="font-family:"Arial","sans-serif""> </span><span style="font-size:10.0pt;font-family:"Courier New"">/48</span><span style="font-family:"Arial","sans-serif""> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">block
which contains 2<sup>80</sup>addresses, being 2<sup>48</sup></span><span style="font-family:"Arial","sans-serif""> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">or about</span><span style="font-family:"Arial","sans-serif""> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">2.8×10<sup>14</sup></span><span style="font-family:"Arial","sans-serif""> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">times
larger than the entire IPv4 address space of 2<sup>32</sup></span><span style="font-family:"Arial","sans-serif""> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">addresses and about</span><span style="font-family:"Arial","sans-serif""> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">7.2×10<sup>16</sup></span><span style="font-family:"Arial","sans-serif""> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">times
larger than the</span><span style="font-family:"Arial","sans-serif""> </span><span style="font-size:10.0pt;font-family:"Courier New"">/8</span><span style="font-family:"Arial","sans-serif""> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">blocks
of IPv4 addresses, which are the largest allocations of IPv4 addresses. The total pool, however, is sufficient for the foreseeable future, because there are 2<sup>128</sup></span><span style="font-family:"Arial","sans-serif""> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">or
about</span><span style="font-family:"Arial","sans-serif""> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">3.4×10<sup>38</sup></span><span style="font-family:"Arial","sans-serif""> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">(340</span><span style="font-family:"Arial","sans-serif""> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif""><a href="http://en.wikipedia.org/wiki/10%5E12" title="10^12" target="_blank"><span style="color:#0b0080">trillion</span></a></span><span style="font-family:"Arial","sans-serif""> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">trillion
trillion) unique IPv6 addresses.</span></p></div></div></blockquote></div></div></blockquote><div><br></div>I'm pretty sure they were saying something similar when they were first handing out Class A's.<br></body></html>