<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Aug 31, 2019, at 02:51 , Masataka Ohta <<a href="mailto:mohta@necom830.hpcl.titech.ac.jp" class="">mohta@necom830.hpcl.titech.ac.jp</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class="">Owen DeLong wrote:<br class=""><br class=""><blockquote type="cite" class="">Consider, for example AS7922<br class=""></blockquote><br class="">COMCAST is not a good example.<br class=""></div></div></blockquote><div><br class=""></div>It seemed as good as any… Also, note that many of the Comcast mergers ended up in other</div><div>Comcast ASNs, possibly not changing ASNs either?</div><div><br class=""></div><div>However, since you don’t like Comcast, let’s try another one that has few (if any) mergers involved:</div><div><br class=""></div><div>AS6939 — 125 prefixes...</div><div><br class=""></div><div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">5.152.177.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">5.152.179.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">5.152.181.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">5.152.182.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">5.152.183.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">12.177.5.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">12.192.16.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">12.192.17.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">23.142.192.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">23.164.160.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">23.175.160.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">27.50.32.0/21</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">38.72.144.0/20</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">38.87.144.0/23</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">45.33.128.0/22</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">45.33.132.0/22</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">45.33.136.0/22</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">45.33.140.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">45.33.140.0/22</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">45.40.118.0/23</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">52.129.12.0/23</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">64.62.128.0/18</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">64.62.128.0/17</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">64.71.128.0/18</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">64.209.56.0/21</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">64.209.68.0/22</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">64.214.184.0/21</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">65.19.128.0/18</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">65.49.0.0/17</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">65.49.2.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">65.49.14.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">65.49.68.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">65.49.108.0/22</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">66.97.177.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">66.119.119.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">66.160.128.0/18</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">66.160.192.0/20</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">66.178.176.0/20</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">66.207.160.0/20</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">66.220.0.0/19</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">67.43.48.0/20</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">72.14.64.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">72.14.65.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">72.14.66.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">72.14.67.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">72.14.89.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">72.52.64.0/18</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">72.52.71.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">72.52.92.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">74.82.0.0/18</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">74.82.22.0/23</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">74.82.46.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">74.82.48.0/22</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">74.116.112.0/22</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">74.121.104.0/22</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">74.122.152.0/21</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">103.6.216.0/22</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">103.96.214.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">103.100.138.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">103.193.186.0/23</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">104.36.120.0/22</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">104.194.216.0/23</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">104.247.128.0/22</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">104.247.132.0/23</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">104.254.152.0/21</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">104.255.240.0/21</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">107.178.32.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">107.178.33.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">107.178.34.0/23</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">107.178.36.0/22</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">107.178.40.0/21</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">124.252.248.0/21</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">139.56.8.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">139.60.15.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">141.193.188.0/23</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">148.51.0.0/17</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">161.129.140.0/22</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">162.213.130.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">162.247.12.0/22</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">162.247.75.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">162.249.152.0/23</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">162.249.154.0/23</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">167.136.239.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">168.245.149.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">170.199.208.0/23</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">173.242.48.0/20</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">184.75.240.0/21</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">184.104.0.0/17</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">184.104.0.0/15</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">184.104.200.0/21</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">184.104.208.0/20</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">184.105.7.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">184.105.16.0/20</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">184.105.32.0/20</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">184.105.48.0/20</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">184.105.62.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">184.105.88.0/21</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">184.105.100.0/22</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">184.105.248.0/21</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">185.101.97.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">185.101.98.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">185.114.36.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">185.149.69.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">185.242.47.0/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">199.164.248.0/23</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">199.192.144.0/22</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">204.13.226.0/23</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">207.126.64.0/19</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">208.64.56.0/21</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">208.75.96.0/21</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">208.79.140.0/22</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">209.51.160.0/19</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">209.130.152.0/22</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">209.135.0.0/19</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">209.150.160.0/19</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">216.66.0.0/19</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">216.66.32.0/19</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">216.66.64.0/19</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">216.66.72.0/21</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">216.66.80.0/20</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">216.99.220.0/23</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">216.218.128.0/17</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">216.224.64.0/21</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">216.224.64.0/19</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">216.229.96.0/20</span></div></div><div><br class=""></div><div>Admittedly some of this appears to be TE routes, but compare with:</div><div><br class=""></div><div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2001::/32</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2001:470::/32</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2001:470:1A::/48</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2001:DF2:7900::/48</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2001:49E8::/32</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2002::/16</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2400:7A00::/32</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2600:7000::/24</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2602:FECA::/36</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2602:FF06:725::/48</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2604:A100:100::/48</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2604:C800:FFFF::/48</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2605:4C0::/32</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2620:0:50C0::/48</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2620:64:6000::/48</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2620:138:C001::/48</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2620:138:C002::/48</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2A03:B2C0::/29</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2A06:1C80::/32</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2A09:2580::/29</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2A09:2780::/29</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2A09:3880::/29</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2A09:3B80::/29</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2A09:3D80::/29</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2A09:E500::/29</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2A09:F480::/29</span></div><div style="margin: 0px; font-stretch: normal; font-size: 22px; line-height: normal; font-family: Monaco; color: rgb(1, 232, 0); background-color: rgba(0, 1, 3, 0.980392);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2A09:FA80::/29</span></div><div class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><br class=""></span></div><div class=""><span style="font-variant-ligatures: no-common-ligatures" class="">27 prefixes with most of them being obvious TE or customer carve-outs.</span></div><div class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><br class=""></span></div><div class=""><span style="font-variant-ligatures: no-common-ligatures" class="">In fact, the first prefix appears to be a bogon from the IANA reserve, so I’m not sure why HE is originating a route for that.</span></div><div class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><br class=""></span></div><div class=""><span style="font-variant-ligatures: no-common-ligatures" class="">If you still think this isn’t a good example, then pick a decent sized transit AS of your choosing and I’ll run their statistics.</span></div><div class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><br class=""></span></div><div class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><br class=""></span></div><blockquote type="cite" class=""><div class=""><div class=""><br class=""><blockquote type="cite" class="">but, rather organic customer growth and RIR applications over time.<br class=""></blockquote><br class="">No, if you know theory and practice of how additional address ranges<br class="">are allocated as a result of growth, you could have noticed that the<br class="">large number of prefixes of COMCAST should mostly be a result of<br class="">mergers, where merged parts won't renumber their hosts.<br class=""><br class=""><blockquote type="cite" class="">That’s the kind of prefix growth we should be able to mostly avoid in<br class="">IPv6 that is rather rampant in IPv4.<br class=""></blockquote><br class="">Without automatic renumbering, IPv6 is of no help against mergers.<br class=""></div></div></blockquote><div><br class=""></div>Merging 10 organizations each of whom have 27 IPv6 prefixes = 270 prefixes.</div><div>Merging 10 organizations each of whom have 125 IPv4 prefixes = 1250 prefixes.</div><div><br class=""></div><div>IPv6 is of some help even in the case of mergers…</div><div><br class=""></div><div><br class=""><blockquote type="cite" class=""><div class=""><div class=""><br class=""><blockquote type="cite" class="">Sure, but the number of multi homed sites is way _WAY_ less than the<br class="">IPv4 routing table size.<br class=""></blockquote><br class="">The following page by Geoff Huston is better than your delusion.<br class=""><br class=""><span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://www.potaroo.net/ispcolumn/2001-03-bgp.html" class="">http://www.potaroo.net/ispcolumn/2001-03-bgp.html</a><br class=""><span class="Apple-tab-span" style="white-space:pre"> </span>What is driving this recent change to exponential growth<br class=""><span class="Apple-tab-span" style="white-space:pre"> </span>of the routing table?<br class=""><span class="Apple-tab-span" style="white-space:pre"> </span>In a word, multi-homing.<br class=""></div></div></blockquote><div><br class=""></div>Yeah, not quite the whole story in that one word… Let’s look at what is driving that increase</div><div>in “multihoming”…</div><div><br class=""></div><div>While it’s true that cost reduction for circuits has made multihoming more practical, it’s also true</div><div>that IPv4 scarcity is driving a lot of this as ISPs are less and less willing to provide free addresses</div><div>to customers driving the economics for smaller and smaller customers to get tiny fractions of space</div><div>from the remaining limited pools at various RIRs (e.g. ARIN NRPM 4.10 set-aside for v6 transition,</div><div>APNIC last /8 policy, RIPE last /8 policy, etc.).</div><div><br class=""></div><div>Once you’re getting to the point of BYOA with your ISP, it’s really not much of a farther step to get an</div><div>ASN to go with that and turn on BGP.</div><div><br class=""></div><div>Geoff’s not entirely wrong about the economics he describes, but he does, IMHO, leave some things</div><div>out. For example, he seems to completely ignore (doesn’t even mention) the fact that this latest</div><div>exponential expansion also coincides with the rise of the IPv4 transfer markets and the fragmentation</div><div>of previously solid large blocks (e.g. MIT’s /8, AMPR selling off a /10 from 44/8, lots of /16s being</div><div>sold for /24 pieces, etc.).</div><div><br class=""></div><div><blockquote type="cite" class=""><div class=""><div class=""><br class=""><blockquote type="cite" class=""><blockquote type="cite" class="">With the current routing practice, the number will increase to 14Mwith IPv4 and a lot more than that with IPv6.<br class=""></blockquote>I’m curious as to why you think that the number is bounded at 14M for<br class="">IPv4 and why you think there will be so many more multi homed sites<br class="">in IPv6?<br class=""></blockquote><br class="">I don't think I must explain the current routing practice here.<br class=""></div></div></blockquote><div><br class=""></div>You don’t need to explain the current routing practice, but if you want to be taken seriously,</div><div>simply assuming that every possible /24 in IPv4 and/or every possible /48 in IPv6 will be</div><div>eventually advertised is a case of reductio ad absurdum. I was trying to give you a chance</div><div>to provide a better argument for your position.</div><div><br class=""><blockquote type="cite" class=""><div class=""><div class=""><br class=""><blockquote type="cite" class=""><blockquote type="cite" class="">The problem is serious especially because Moore's law is ending.<br class=""></blockquote>People have been claiming that Moore's law is at an end longer than<br class="">we have been pushing for IPv6 deployment.<br class=""></blockquote><br class="">I'm afraid you are not very familiar with semiconductor technology<br class="">trend.<br class=""></div></div></blockquote><div><br class=""></div></div>While I appreciate that you enjoy speaking to people in condescending tones, looking at the<div class="">history and current trends shows that we are in a period where Moore’s law is leveling off.</div><div class="">We’ve had such periods before and then someone eventually develops something new that</div><div class="">leads to a resumption of the curve.</div><div class=""><br class=""></div><div class="">Past examples have included sub micron technology, the shift from 5v0 to 3v3 and then</div><div class="">later 1v8 core logic, etc.</div><div class=""><br class=""></div><div class="">I stand by my statement. I have no idea what the next breakthrough will be, but I doubt that we</div><div class="">have seen the last breakthrough in computing efficiency.</div><div class=""><br class=""></div><div class="">Owen</div><div class=""><br class=""></div></body></html>