--- version: rssac002v3 service: i.root-servers.net start-period: '2021-12-30T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6329970580 dns-udp-queries-received-ipv6: 1557670831 dns-tcp-queries-received-ipv4: 610882731 dns-tcp-queries-received-ipv6: 62515240 dns-udp-responses-sent-ipv4: 5588156033 dns-udp-responses-sent-ipv6: 1473629917 dns-tcp-responses-sent-ipv4: 604045153 dns-tcp-responses-sent-ipv6: 47564856