--- version: rssac002v3 service: i.root-servers.net start-period: '2021-12-26T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6033633604 dns-udp-queries-received-ipv6: 1471525454 dns-tcp-queries-received-ipv4: 572441600 dns-tcp-queries-received-ipv6: 71883326 dns-udp-responses-sent-ipv4: 5298840136 dns-udp-responses-sent-ipv6: 1375410524 dns-tcp-responses-sent-ipv4: 554817495 dns-tcp-responses-sent-ipv6: 56997282