--- version: rssac002v3 service: i.root-servers.net start-period: '2021-12-09T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6027748443 dns-udp-queries-received-ipv6: 1341328151 dns-tcp-queries-received-ipv4: 617130794 dns-tcp-queries-received-ipv6: 71638251 dns-udp-responses-sent-ipv4: 5210060361 dns-udp-responses-sent-ipv6: 1231776499 dns-tcp-responses-sent-ipv4: 584584070 dns-tcp-responses-sent-ipv6: 63899870