<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=""><div class="">Dear all,</div><div class=""><br class=""></div><div class="">We would like to inform you that the RIPE NCC has de-registered 188.64.224.0/21 on 10 July 2018 according to our published procedures. We are in contact with the relevant party.</div><div class=""><br class=""></div><div class="">Best Regards,</div><div class=""><br class=""></div><div class="">Henriette van Ingen</div><div class="">Customer Services</div><div class="">RIPE NCC</div><div class=""><br class=""></div><div><br class=""><blockquote type="cite" class=""><div class="">On 13 Jul 2018, at 11:54, denis walker via db-wg <<a href="mailto:db-wg@ripe.net" class="">db-wg@ripe.net</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class=""><div style="background-color: rgb(255, 255, 255); font-family: "Helvetica Neue", Helvetica, Arial, "Lucida Grande", sans-serif; font-size: 16px;" class=""><div id="yui_3_16_0_ym19_1_1531475289208_7033" class=""><span class="">Hi Guys</span></div><div id="yui_3_16_0_ym19_1_1531475289208_7033" class=""><span class=""><br class=""></span></div><div id="yui_3_16_0_ym19_1_1531475289208_7033" dir="ltr" class=""><span id="yui_3_16_0_ym19_1_1531475289208_7090" class="">I am sure everyone will disagree with me, but this shows (to me) why it would be better to have one authoritative, accurate, trusted, distributed IRR managed by the 5 RIRs than many independent/commercial IRRs with non authenticated data.</span></div><div id="yui_3_16_0_ym19_1_1531475289208_7033" dir="ltr" class=""><span class=""><br class=""></span></div><div id="yui_3_16_0_ym19_1_1531475289208_7033" dir="ltr" class=""><span id="yui_3_16_0_ym19_1_1531475289208_7157" class="">cheers</span></div><div id="yui_3_16_0_ym19_1_1531475289208_7033" dir="ltr" class=""><span class="">denis</span></div><div id="yui_3_16_0_ym19_1_1531475289208_7033" dir="ltr" class=""><span class="">co-chair DB-WG</span></div><div id="yui_3_16_0_ym19_1_1531475289208_7033" dir="ltr" class=""><span class=""><br class=""></span></div><div class="qtdSeparateBR" id="yui_3_16_0_ym19_1_1531475289208_7034"><br class=""><br class=""></div><div class="yahoo_quoted" style="display: block;"> <div style="font-family: Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" class=""> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif; font-size: 16px;" class=""> <div dir="ltr" class=""> <font size="2" face="Arial" class=""> <hr size="1" class=""> <b class=""><span style="font-weight:bold;" class="">From:</span></b> Aftab Siddiqui via db-wg <<a href="mailto:db-wg@ripe.net" class="">db-wg@ripe.net</a>><br class=""> <b class=""><span style="font-weight: bold;" class="">To:</span></b> Geoff Huston <<a href="mailto:gih@apnic.net" class="">gih@apnic.net</a>> <br class=""><b class=""><span style="font-weight: bold;" class="">Cc:</span></b> RIPE Database Working Group <<a href="mailto:db-wg@ripe.net" class="">db-wg@ripe.net</a>><br class=""> <b class=""><span style="font-weight: bold;" class="">Sent:</span></b> Thursday, 12 July 2018, 18:40<br class=""> <b class=""><span style="font-weight: bold;" class="">Subject:</span></b> Re: [db-wg] Source GRS vs RIPE<br class=""> </font> </div> <div class="y_msg_container"><br class=""><div id="yiv3321781041" class=""><div class=""><div dir="ltr" class="">Hi Geoff,<div class=""><div class="yiv3321781041gmail_quote"><div class=""> </div><blockquote class="yiv3321781041gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">Of course Twitter is doing nothing uniquely unusual in this respect, as these are just 7 examples from a pool of some 300 announcements of unallocated address space (a list of such bogons can be found at <a rel="nofollow" shape="rect" target="_blank" href="http://www.cidr-report.org/as2.0/#Bogons" class="">http://www.cidr-report.org/as2.0/#Bogons</a>)<br clear="none" class=""></blockquote><div class=""><br clear="none" class=""></div><div class="">:) </div><div class=""> </div><blockquote class="yiv3321781041gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"> <br clear="none" class=""> - Why is Twitter announcing these prefixes? <br clear="none" class=""> <br clear="none" class=""> I have no idea. Something has gone wrong here and the address has come back to the RIR and Twitter apper to be unaware of this.<br clear="none" class=""></blockquote><div class=""><br clear="none" class=""></div><div class="">No, Twitter is absolutely aware of this issue, I alerted their NOC when I got the result this morning from CIDR report (yes, I scrop your data daily) but unfortunately there response was "This prefix is valid and owned by us in RIPE region. Please do your homework before making incorrect accusations." But atleast I tried.</div><div class=""> </div><blockquote class="yiv3321781041gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"> - How and why is this prefix in RADB, given that it is unallocated space? <br clear="none" class=""> <br clear="none" class=""> Good question - I wonder what periodic checks the RADB undertakes on the data held in its registry?<br clear="none" class=""></blockquote><div class=""><br clear="none" class=""></div><div class="">No idea, it should be triggered right away when the RIR, who is the authentic source of these resources marked them "Unalloacted". But in a perfect world.</div><div class=""> </div><blockquote class="yiv3321781041gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"> - Why do upstream AS’s accept these advertised prefixes? <br clear="none" class=""> <br clear="none" class=""> Maybe they chose to believe that RADB performs robust periodic integrity checks? Or <insert reason here>?<br clear="none" class=""></blockquote><div class=""><br clear="none" class=""></div><div class="">Yes, mostly follow RADB. </div><div class="yiv3321781041yqt0134413226" id="yiv3321781041yqtfd30935"><div class=""> </div><blockquote class="yiv3321781041gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"> <br clear="none" class=""> Geoff<br clear="none" class=""> <br clear="none" class=""> <br clear="none" class=""> <br clear="none" class=""> <br clear="none" class=""> <br clear="none" class=""> </blockquote></div></div></div></div></div></div><br class=""><br class=""></div> </div> </div> </div></div></div></div></blockquote></div><br class=""></body></html>