--- version: rssac002v3 service: i.root-servers.net start-period: '2021-02-09T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5327143870 dns-udp-queries-received-ipv6: 962689347 dns-tcp-queries-received-ipv4: 506160071 dns-tcp-queries-received-ipv6: 138997600 dns-udp-responses-sent-ipv4: 4226101946 dns-udp-responses-sent-ipv6: 869874760 dns-tcp-responses-sent-ipv4: 362867267 dns-tcp-responses-sent-ipv6: 125721954