<div dir="ltr"><div>Willem replied to Jan:</div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">I do not have a list either, but I have counted resolvers on RIPE Atlas<br>for which the <a href="http://o-o.myaddr.l.google.com/" rel="noreferrer" target="_blank">o-o.myaddr.l.google.com</a>. TXT query reports a ECS value.<br><a href="https://dnsthought.nlnetlabs.nl/does_ecs/#top_auth_asns" rel="noreferrer" target="_blank">https://dnsthought.nlnetlabs.nl/does_ecs/#top_auth_asns</a><br>Besides Google and OpenDNS, VeriSign is showing up there quite<br>prominently too.</blockquote><div><br></div><div>I think Willem meant to post this URL:</div><div><a href="https://dnsthought.nlnetlabs.nl/does_ecs/#top_resolver_asns">https://dnsthought.nlnetlabs.nl/does_ecs/#top_resolver_asns</a></div><div>which breaks it down by the resolver and not the authoritative server ASN.</div><div><br></div><div>The AS396566 ASN is Verisign Global Registry Services (presumably their public DNS)</div><div><br></div><div>Thanks, Willem, for collecting this useful data.</div><div><br></div><div>@alex<br></div></div>