--- version: rssac002v3 service: j.root-servers.net start-period: '2019-12-21T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 8923436452 dns-udp-queries-received-ipv6: 1174441908 dns-tcp-queries-received-ipv4: 807632980 dns-tcp-queries-received-ipv6: 105924727 dns-udp-responses-sent-ipv4: 8012713030 dns-udp-responses-sent-ipv6: 1143947504 dns-tcp-responses-sent-ipv4: 551408450 dns-tcp-responses-sent-ipv6: 94488928