--- version: rssac002v3 service: d.root-servers.net start-period: '2019-12-21T00:00:00Z' end-period: '2019-12-21T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7973132347 dns-udp-queries-received-ipv6: 1443909207 dns-tcp-queries-received-ipv4: 699892231 dns-tcp-queries-received-ipv6: 93751441 dns-udp-responses-sent-ipv4: 7974168560 dns-udp-responses-sent-ipv6: 1443860332 dns-tcp-responses-sent-ipv4: 699778585 dns-tcp-responses-sent-ipv6: 93618614