--- version: rssac002v3 service: j.root-servers.net start-period: '2021-07-07T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6609056584 dns-udp-queries-received-ipv6: 1350451065 dns-tcp-queries-received-ipv4: 591293033 dns-tcp-queries-received-ipv6: 101055803 dns-udp-responses-sent-ipv4: 6095922121 dns-udp-responses-sent-ipv6: 1345866666 dns-tcp-responses-sent-ipv4: 411078824 dns-tcp-responses-sent-ipv6: 100811858