--- version: rssac002v3 service: i.root-servers.net start-period: '2021-12-01T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5741483545 dns-udp-queries-received-ipv6: 1034184716 dns-tcp-queries-received-ipv4: 563039424 dns-tcp-queries-received-ipv6: 53742745 dns-udp-responses-sent-ipv4: 4935300313 dns-udp-responses-sent-ipv6: 968225805 dns-tcp-responses-sent-ipv4: 540749737 dns-tcp-responses-sent-ipv6: 38805055