--- version: rssac002v3 service: j.root-servers.net start-period: '2021-06-30T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6487186170 dns-udp-queries-received-ipv6: 1519464819 dns-tcp-queries-received-ipv4: 577972711 dns-tcp-queries-received-ipv6: 205551388 dns-udp-responses-sent-ipv4: 5966453348 dns-udp-responses-sent-ipv6: 1509308468 dns-tcp-responses-sent-ipv4: 407283163 dns-tcp-responses-sent-ipv6: 224314548