--- version: rssac002v3 service: i.root-servers.net start-period: '2021-03-15T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4794737976 dns-udp-queries-received-ipv6: 849730480 dns-tcp-queries-received-ipv4: 417278504 dns-tcp-queries-received-ipv6: 106808936 dns-udp-responses-sent-ipv4: 3967130571 dns-udp-responses-sent-ipv6: 784717541 dns-tcp-responses-sent-ipv4: 321913782 dns-tcp-responses-sent-ipv6: 103832494