--- version: rssac002v3 service: i.root-servers.net start-period: '2021-06-03T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5331692275 dns-udp-queries-received-ipv6: 980683480 dns-tcp-queries-received-ipv4: 483595409 dns-tcp-queries-received-ipv6: 109449608 dns-udp-responses-sent-ipv4: 4669650152 dns-udp-responses-sent-ipv6: 955922737 dns-tcp-responses-sent-ipv4: 415811594 dns-tcp-responses-sent-ipv6: 105093817