--- version: rssac002v3 service: d.root-servers.net start-period: '2017-03-20T00:00:00Z' end-period: '2017-03-20T23:59:59Z' metric: unique-sources num-sources-ipv4: 2839221 num-sources-ipv6: 265129 num-sources-ipv6-aggregate: 159070