--- version: rssac002v3 service: j.root-servers.net start-period: '2021-04-09T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6648436050 dns-udp-queries-received-ipv6: 1349693903 dns-tcp-queries-received-ipv4: 553280161 dns-tcp-queries-received-ipv6: 104372587 dns-udp-responses-sent-ipv4: 6169348263 dns-udp-responses-sent-ipv6: 1327561567 dns-tcp-responses-sent-ipv4: 390496306 dns-tcp-responses-sent-ipv6: 98528885