--- version: rssac002v3 service: j.root-servers.net start-period: '2021-05-21T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6311850049 dns-udp-queries-received-ipv6: 1305819232 dns-tcp-queries-received-ipv4: 549888436 dns-tcp-queries-received-ipv6: 94958753 dns-udp-responses-sent-ipv4: 5824001911 dns-udp-responses-sent-ipv6: 1300214766 dns-tcp-responses-sent-ipv4: 380284838 dns-tcp-responses-sent-ipv6: 94821413