--- version: rssac002v3 service: i.root-servers.net start-period: '2021-12-17T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6507418105 dns-udp-queries-received-ipv6: 1682696243 dns-tcp-queries-received-ipv4: 594936246 dns-tcp-queries-received-ipv6: 81719019 dns-udp-responses-sent-ipv4: 5733284463 dns-udp-responses-sent-ipv6: 1572080393 dns-tcp-responses-sent-ipv4: 596792233 dns-tcp-responses-sent-ipv6: 66151020