--- version: rssac002v3 service: i.root-servers.net start-period: '2021-05-31T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5089167892 dns-udp-queries-received-ipv6: 841099357 dns-tcp-queries-received-ipv4: 481607073 dns-tcp-queries-received-ipv6: 94913820 dns-udp-responses-sent-ipv4: 4488082905 dns-udp-responses-sent-ipv6: 824804644 dns-tcp-responses-sent-ipv4: 420593368 dns-tcp-responses-sent-ipv6: 88570003