--- version: rssac002v3 service: i.root-servers.net start-period: '2021-06-29T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5257315150 dns-udp-queries-received-ipv6: 987351399 dns-tcp-queries-received-ipv4: 453409181 dns-tcp-queries-received-ipv6: 116289434 dns-udp-responses-sent-ipv4: 4651757159 dns-udp-responses-sent-ipv6: 1012852413 dns-tcp-responses-sent-ipv4: 431084224 dns-tcp-responses-sent-ipv6: 108089789