--- version: rssac002v3 service: i.root-servers.net start-period: '2021-09-10T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5405745691 dns-udp-queries-received-ipv6: 1172742825 dns-tcp-queries-received-ipv4: 592329058 dns-tcp-queries-received-ipv6: 138651078 dns-udp-responses-sent-ipv4: 4640353583 dns-udp-responses-sent-ipv6: 1022767139 dns-tcp-responses-sent-ipv4: 543826961 dns-tcp-responses-sent-ipv6: 122288197