--- version: rssac002v3 service: i.root-servers.net start-period: '2021-01-04T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5300561616 dns-udp-queries-received-ipv6: 981653339 dns-tcp-queries-received-ipv4: 564389050 dns-tcp-queries-received-ipv6: 135782483 dns-udp-responses-sent-ipv4: 4140445891 dns-udp-responses-sent-ipv6: 870050085 dns-tcp-responses-sent-ipv4: 434722023 dns-tcp-responses-sent-ipv6: 127441537